18 na 355 - Service Bulletin Bulletin No.: 18-NA-355 Date: May, 2019 TECHNICAL Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO).

 
Service Procedure outlined in TSB 18-NA-355 for all models except the 2019 Chevrolet Silverado 1500 and GMC Sierra 1500 (New Body Style). For the 2019 Chevrolet Silverado 1500 and GMC Sierra 1500 (New Body Style), refer to bulletin 19-NA-121. . Men in women

Cost to replace the torque converter in a Camaro SS with the 8-speed automatic transmission. It was replaced due to the shudder as per TSB 18-NA-355💠My Inst...Drives: 17 2SS, 8L90, Cam, Heads, E85. Join Date: Dec 2016. Location: US. Posts: 1,156. Anyone done the 18-NA-355 TSB Themselves? I am way out of warranty and had the first TSB done, but not the final 855 tsb with the new Mobil1 LV fluid (19417577) and machine flush. I kind of don't even want to know how much the dealer would want, and yeah I ...Repeat steps 2 and 3, clean the transmission oil pan and magnet....." (3rd time the pan gets dropped) Version 1 dtd Jan 17, 2019: View attachment TSB # 18-NA-355 Part 1.pdf View attachment TSB # 18-NA-355 Part 2.pdf (this is the one with Corvette specific procedure, pg 25) TSB #18 NA 355 wasEvidently that one and 18-NA-355 have just been updated with the new information and keep their #s. 2017 GMC Canyon Denali V6 CCSB 4X4 [/QUOTE The TBS # on the work order for my 2019 Colorado was 18-NA-355. 20 qts triple flush 7/29/2019My car was due for an oil change so I thought I would get the Thunk taken care of. I went in armed with the TSB #18-NA-355 dealing with the triple flush of fluids. However, the Corvette Tech specialist at the dealer said he would perform a complete diagnostic test before considering the TSB.Took to Chevy dealership in Dec. of 2019 (@30,000 mi.) to have TSB 18-NA-355 performed. The. Mobil 1 Synthetic LV ATF HP transmission fluid swap was successful until last week when I hit around 52,000 mi. and the same problems began to emerge.. Just took the truck back in for service today.It's also possible you will have some warranty left on the 2018. If it was a certified pre-owned, the powertrain warranty covers transmission/TC for 6 years 100k miles, otherwise I think the 2018 was 5 years 60k miles. I would personally get the '18 with zero hesitation. Just make sure you insist on them doing the flush per TSB 18-NA-355.Technical Bulletin - #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) - For 2017 Cadillac CT6. This bulletin is found in the CT6 Service Manual (Europe, Korea, N America, Other IO).Jan 9, 2012 · If you do not get it done by then, you will have to pay for the repair yourself. Bottom Line: Free if you get the work done before the expiration date. Recalls. When cars come in for service, shops keep track of what the problems are and what customers are saying about their vehicles. When enough safety- or emissions-related problems have been ... Oct 10, 2019 · TSB 18-NA-355 is the one you want, but it also states to not replace the torque converter. With that said I was able to get mine replaced with the fluid/flush. It's likely dealer dependant. In my case the dealer saw the metal shavings in the fluid from the torque converter clutches, so they told GM, and they said to go ahead and replace it The TSB 18-NA-355 states that General Motors knew about the Transmission Shudder as early as 2015, but only created the TSB in August 2019, "and this shows that General Motors suppressed information and decided to send vehicles to consumers anyway. According to the TSB Cadillac, Camaro, and GMCPI1178F warns Service Technicians about premature ...The latest revision of the shudder TSB (July 8 2019 : 18-NA-355 TSB) now states to go ahead and just do the flush if it has not yet been performed. This is good news, and what GM should have done from the beginning with this latest fluid if they were so confident in it.Took to Chevy dealership in Dec. of 2019 (@30,000 mi.) to have TSB 18-NA-355 performed. The. Mobil 1 Synthetic LV ATF HP transmission fluid swap was successful until last week when I hit around 52,000 mi. and the same problems began to emerge.. Just took the truck back in for service today.TECHNICAL. Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed. Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO). Mexico and Export Regions should follow Bulletin 19-NA-018. Brand: Drives: 17 2SS, 8L90, Cam, Heads, E85. Join Date: Dec 2016. Location: US. Posts: 1,156. Anyone done the 18-NA-355 TSB Themselves? I am way out of warranty and had the first TSB done, but not the final 855 tsb with the new Mobil1 LV fluid (19417577) and machine flush. I kind of don't even want to know how much the dealer would want, and yeah I ...Assuming the A8 (not the A10 because your sig says you have a 2016 Camaro), it did receive a service bulletin about the first shift after a cold start, see below. Also make sure you have the latest transmission fluid that introduced in Jan 2019 to prevent transmission shudder, the service bulletin for that issue is 18-NA-355, flushing the A8 ...Evidently that one and 18-NA-355 have just been updated with the new information and keep their #s. 2017 GMC Canyon Denali V6 CCSB 4X4 [/QUOTE The TBS # on the work order for my 2019 Colorado was 18-NA-355. 20 qts triple flush 7/29/2019For example, the GM service bulletin 18-NA-355 for the 8-speed 8L90 transmission recommends flushing the transmission to fix 'Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH'. If you have the 6-speed transmission check if the TSB 21-NA-199 has been done to your truck, as it helps to keep the transmission cooler.I just took my vehicle into the dealership and they performed the testing required per TSB 18-NA-355. They could not get the pco-scop to register a high enough vibration so they would not warranty the repair. I believe this was because the last TSB 16-na-175 fixed most of the vibration and the small vibrations would not register per 18-na-355.Transmission flush fixed the shudder. (Tsb 18-NA-355) Took my 2018 Colorado WT in for the flush at the Chevy service center I get all my routine work done at. It was all covered under warranty as I only have 18,900 miles on it. Glad the flush fixed the issue. Runs smooth now, and the shifting is like night and day. The whole process took about ... Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2016 Chevrolet Silverado - 4WD The document preview is shown on the right. To view the entire document you need to have a subscription. Subscribe Drives: 2018 2SS. Join Date: Aug 2017. Location: Western PA. Posts: 133. July Update #18-NA-355. Anyone have a copy or link to the most recent shudder TSB? Looks like no diagnosis required if built before March 2019 based on the July update. Only customer complaint needed for dealers to perform the flush. I think I may have the start of the ...This video is just a walk through of what you might be dealing with if you feel an unusual shudder.Subject: Shake and/or Shudder During Light Throttle Acce...Apr 13, 2020 · TSB 18-NA-355 was updated July 2019 negating the need for the picoscope diagnosis (see the bottom section in your link), and dealerships were directed to flush their existing stock. Both versions of 18-NA-355 used the same exact Mobil 1 fluid (or the TSB would have had a different number), which my dealership began using Jan 2019. My 2015 is torn down as we speak for the torque converter flood back. There are two different TSB's here. The fluid flush to address the shudder is 18-NA-355. Mine is in for the delayed engagement issue where after sitting overnight, when going into drive there is a 3 second delay followed by a harsh "bang" as it engages. That tsb is 16-NA-014.TECHNICAL. Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed. Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO). Mexico and Export Regions should follow Bulletin 19-NA-018. Brand: BigTallVandy said: TSB's are simply guidance documents to assist service personnel in quickly diagnosing and repairing previously identified issues. They are not related to a vehicle's warranty. If a problem is addressed by a TSB and the vehicle is still under warranty, it is repaired free of charge to the owner.Jan 4, 2022 · They were not willing to admit that this is a widespread problem. I showed them the TSB 18-NA-355 that describes the problem. They said a new TSB was released in 2022, TSB 16-NA-361, where it states that this is normal operation and replacing any transmission components will not resolve the problem. Apr 13, 2022 · Norcalace · #17 · May 6, 2022. MrYgrmstr said: My car is at the dealer for the next several days to fix the dreaded A8 shudder and a flaky infotainment screen. Man I hope it all gets resolved. As the title states, fingers crossed 🤞🏻. There is a Service Bulletin that covers your issue. It’s Bulletin # 18-NA-355. Jul 13, 2020 · Note: a copy of the GM service bulletin 18-NA-355 can be found online. Local Transmission Shop to the Rescue! The problem with the 8L90 and 8L45 transmissions is certainly not unique, and really points out the importance of using the right transmission fluid! Chevrolet TSB 18-NA-355 Make: Chevrolet Number: 18-NA-355 Title: Shake And/Or Shudder During Light Throttle Acceleration Between 25 And 80 Mph (40 And 128 Km/H) At Steady Speed Date: 1/17/2019 Models: 2017-2019 Camaro LS; 2016-2019 Camaro LT; 2016-2019 Camaro SS; 2017-2019 Camaro ZL1; 2017-2019 Colorado; 2017-2019 Colorado LT; 2017-2019 ...The auto manufacturers had no legal obligation to repair the cars. Technical Service Bulletins are issued by manufacturers when there is a problem found in a number of cars which does not have an ...Apr 13, 2020 · TSB 18-NA-355 was updated July 2019 negating the need for the picoscope diagnosis (see the bottom section in your link), and dealerships were directed to flush their existing stock. Both versions of 18-NA-355 used the same exact Mobil 1 fluid (or the TSB would have had a different number), which my dealership began using Jan 2019. GM issued a Technical Service Bulletin TSB 18-NA-355, with updates that address the “torque converter clutch (TCC) shudder conditions.” The problem was identified by many customers who reported the transmission shuddering frequently and shifting harshly between first and second gear.In fact, 16-NA-175 refers readers to 18-NA-355 for service instructions. 18-NA-355 lists the PN for Mobil 1 Synthetic LV ATF HP as 19417577 for quart containers and 19417904 for 55-gal. drums but, as you stated above, both numbers are incorrect. The correct PN for the quart containers is 19353429.Apr 27, 2021 · C7 General Discussion - 18-NA-355 Shudder - Does Service Bulletin 18-NA-355 cover all 2017 model year Corvettes built before 2/1/19? Or does it only cover certain VIN’s? (M5U trans) Both my dealer and the Chevy customer assistance phone line say my vehicle is not covered because of my VIN. Aug 3, 2019 · 18-NA-355 and 19-NA-121 have been updated effective July 9, 2019 to eliminate the diagnostics portion within the TSB's and the labor times have been updated to reflect the removal of the diagnostic procedures. Vehicles presented with suspected shudder within the published build dates should have the prescribed fluid exchange procedure performed. Feb 20, 2019 · In fact, 16-NA-175 refers readers to 18-NA-355 for service instructions. 18-NA-355 lists the PN for Mobil 1 Synthetic LV ATF HP as 19417577 for quart containers and 19417904 for 55-gal. drums but, as you stated above, both numbers are incorrect. The correct PN for the quart containers is 19353429. Aug 5, 2021 · Noticed the shudder at just under 1200 miles, Dec '18, purchased car new 2/18. Had oil change and 18-na-355 done 2/19 at about 1400 miles. 5575 miles now, still no shudder. Shifts perfectly, quick, crisp. Page 2 March, 2019 Bulletin No.: 18-NA-355 Shudder Test Refer to the table below for conditions pertaining to specific applications. In each vehicle, constant throttle input on a smooth grade is desirable. PicoScope Measured Frequency is the approximate vibration frequency where TCC Shudder can be found, discussed in detail below. Jun 13, 2019 · Join Date: Jun 2013. Location: Hackettstown, NJ. Posts: 209. After TSB 18-NA-355 Was Performed. 2018, 2SS Camaro with K&N cold air intake, flowmaster american thunderaxle back exhaust and AFM range finder. I just had the Transmission flush TSB 18-NA-355 performed today. I swear my engine and exhaust sound noticeably quieter after the flush. Service Bulletin Bulletin No.: 18-NA-355 Date: August, 2019 TECHNICAL Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO).18-NA-355 TSB (Technical Service Bulletin) which I think is for the transmission fluid flush, the latest update addresses “torque converter clutch (TCC) shudder conditions on 8L45 and 8L90 ” eight-speed automatic transmissions, RPO codes M5N, M5T, M5U, and M5X. Affected vehicles include Chevrolet, GMC and Cadillac vehicles, as follows.#18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020). Service Bulletins - Service manuals, electrical schematics and bulletins for 1995 to current GM vehicles. C7 General Discussion - 18-NA-355 Shudder - Does Service Bulletin 18-NA-355 cover all 2017 model year Corvettes built before 2/1/19? Or does it only cover certain VIN’s? (M5U trans) Both my dealer and the Chevy customer assistance phone line say my vehicle is not covered because of my VIN.C7 General Discussion - LATEST TSB 18-NA-355 for AUTO TRANS SHUDDER - I found and attached the latest TSB 18-NA-355 regarding automatic transmission shudder. It was on the NHTSA website. The latest update is July 29, 2019. I also found another bulletin that applies, see attached TSB 19-NA-142Apr 13, 2022 · Norcalace · #17 · May 6, 2022. MrYgrmstr said: My car is at the dealer for the next several days to fix the dreaded A8 shudder and a flaky infotainment screen. Man I hope it all gets resolved. As the title states, fingers crossed 🤞🏻. There is a Service Bulletin that covers your issue. It’s Bulletin # 18-NA-355. Hi John. My local GM dealer recently (1/24/19) diagnosed my 2016 Camaro SS with the same code as your Corvette (18-NA-355). I google searched it and found your post. They flushed and changed my transmission oil (13K miles) and the shudder has greatly improved. However, I am noticing some new hesitations as the transmission shifts in lower gears.In fact, 16-NA-175 refers readers to 18-NA-355 for service instructions. 18-NA-355 lists the PN for Mobil 1 Synthetic LV ATF HP as 19417577 for quart containers and 19417904 for 55-gal. drums but, as you stated above, both numbers are incorrect. The correct PN for the quart containers is 19353429.Service Bulletin Bulletin No.: 18-NA-355 Date: August, 2019 TECHNICAL Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO). In January 2019, GM issued TSB 18-NA-355 entitled, “Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed.”Shudder TSB 18-NA-355 has been updated 7/19 I just caught wind of a very important update to the transmission shudder TSB. Apparently, as of July 9th, the TSB has been revised to no longer require diagnostic procedures.Norcalace · #17 · May 6, 2022. MrYgrmstr said: My car is at the dealer for the next several days to fix the dreaded A8 shudder and a flaky infotainment screen. Man I hope it all gets resolved. As the title states, fingers crossed 🤞🏻. There is a Service Bulletin that covers your issue. It’s Bulletin # 18-NA-355.TSB-NA-355 was reference on the paperwork. All is good for now Bill 2023 GMC Canyon Denali | 1-20 - 1100 ordered | 2-24 - 3800 Built | 4-27 - 6000 Delivered 2023 Chevy Camaro 2SS 1LE 2018 GMC Canyon Denali Crew Cab 4WD V6 (sold) 2015 GMC Canyon SLT Crew Cab 4WD (sold) 2004 Chevy Colorado Z71 Crew Cab 4WD (sold)Mar 16, 2021 · Started experiencing the Transmission Shudder. GM refers to it as SERVICE BULLETIN 18-NA-355. Chevrolet Colorado 2017-2019. Condition: may be described as driving over low rumble strips or Highway with rough expansion joints. Cause: may be due to Torque Converter Clutch Shudder. Correction: Should have the appropriate fluid exchange procedure ... The TSB 18-NA-355 states that General Motors knew about the Transmission Shudder as early as 2015, but only created the TSB in August 2019, "and this shows that General Motors suppressed information and decided to send vehicles to consumers anyway. According to the TSB Cadillac, Camaro, and GMCPI1178F warns Service Technicians about premature ...Discussion Starter · Jul 11, 2021. I've read about both some quick and painless service appointments, and some not so easy ones as well. I'll drop my truck off tomorrow for the initial diagnostic, which I already know is the infamous shudder/shake. I'd also like an RFB, alignment, tire rotation, and a new TC if they deem appropriate.18-NA-355 TSB (Technical Service Bulletin) which I think is for the transmission fluid flush, the latest update addresses “torque converter clutch (TCC) shudder conditions on 8L45 and 8L90 ” eight-speed automatic transmissions, RPO codes M5N, M5T, M5U, and M5X. Affected vehicles include Chevrolet, GMC and Cadillac vehicles, as follows.Mexico and Export Regions should follow Bulletin 19-NA-018. Note: This procedure should only be completed once per vehicle. Any vehicle that returns with suspect shudder should be diagnosed utilizing published diagnostics, GDS, PICO Scope or other diagnostic tools. Sometimes shudder is not caused by the torque converter clutch (TCC).Transmission flush fixed the shudder. (Tsb 18-NA-355) Took my 2018 Colorado WT in for the flush at the Chevy service center I get all my routine work done at. It was all covered under warranty as I only have 18,900 miles on it. Glad the flush fixed the issue. Runs smooth now, and the shifting is like night and day. The whole process took about ...Repeat steps 2 and 3, clean the transmission oil pan and magnet....." (3rd time the pan gets dropped) Version 1 dtd Jan 17, 2019: View attachment TSB # 18-NA-355 Part 1.pdf View attachment TSB # 18-NA-355 Part 2.pdf (this is the one with Corvette specific procedure, pg 25) TSB #18 NA 355 wasApr 13, 2020 · Took to Chevy dealership in Dec. of 2019 (@30,000 mi.) to have TSB 18-NA-355 performed. The. Mobil 1 Synthetic LV ATF HP transmission fluid swap was successful until last week when I hit around 52,000 mi. and the same problems began to emerge.. Just took the truck back in for service today. Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2016 Chevrolet Silverado - 4WD The document preview is shown on the right. To view the entire document you need to have a subscription. SubscribeJul 29, 2019 · Shudder TSB 18-NA-355 has been updated 7/19. I just caught wind of a very important update to the transmission shudder TSB. Apparently, as of July 9th, the TSB has been revised to no longer require diagnostic procedures. This is obviously big news for those of us who have had to jump through dealer hoops to get anything done. Sep 6, 2019 · My car was due for an oil change so I thought I would get the Thunk taken care of. I went in armed with the TSB #18-NA-355 dealing with the triple flush of fluids. However, the Corvette Tech specialist at the dealer said he would perform a complete diagnostic test before considering the TSB. Jun 13, 2019 · Join Date: Jun 2013. Location: Hackettstown, NJ. Posts: 209. After TSB 18-NA-355 Was Performed. 2018, 2SS Camaro with K&N cold air intake, flowmaster american thunderaxle back exhaust and AFM range finder. I just had the Transmission flush TSB 18-NA-355 performed today. I swear my engine and exhaust sound noticeably quieter after the flush. C7 General Discussion - LATEST TSB 18-NA-355 for AUTO TRANS SHUDDER - I found and attached the latest TSB 18-NA-355 regarding automatic transmission shudder. It was on the NHTSA website. The latest update is July 29, 2019. I also found another bulletin that applies, see attached TSB 19-NA-142For further information and the fluid exchange procedure, refer to GM corporate Technical Service Bulletin (TSB) 18-NA-355, available in Service Information. The Kit includes: • DT-52263-1 Block Assembly (with 10 foot long fluid drain hose and spring clamp)Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2016 Chevrolet Silverado - 4WD The document preview is shown on the right. To view the entire document you need to have a subscription. SubscribeIf I am reading the 18-NA-355 that you posted for the c-7 corvette right, it looks likes if your corvette was made AFTER Feb. 1st of 2019 you should have the new fluid in it ? Yes, that's correct. Also 18-NA-355 TBS I posted is the latest version dated April 2020 which replaced the August 2019 version that was also posted above.May 6, 2022 · The issue about the TCC shudder that many of us have experienced, and apparently carried over to a variety of GM models with the same trans assembly, seems to pretty accurately described in TSB #18-NA-355 (22 pages). I got the TSB number, because the dealer printed it in my service invoice (N/C, since I am under the powertrain warranty). Transmission flush fixed the shudder. (Tsb 18-NA-355) Took my 2018 Colorado WT in for the flush at the Chevy service center I get all my routine work done at. It was all covered under warranty as I only have 18,900 miles on it. Glad the flush fixed the issue. Runs smooth now, and the shifting is like night and day. The whole process took about ... Service Bulletin Bulletin No.: 18-NA-355 Date: May, 2019 TECHNICAL Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO). Has the TSB 18-NA-355 Transmission Fluid Exchange fix your transmission shutter issues. We've linked to so many versions of TSBs it's easy to be looking at one when you think it's the other. I believe the one dated August 2019 is the most recent, with the last revisions in July, unless someone has found one that's even more recent.Dec 13, 2018 · I just took my vehicle into the dealership and they performed the testing required per TSB 18-NA-355. They could not get the pco-scop to register a high enough vibration so they would not warranty the repair. I believe this was because the last TSB 16-na-175 fixed most of the vibration and the small vibrations would not register per 18-na-355. Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2017 Cadillac ATS The document preview is shown on the right. To view the entire document you need to have a subscription. Subscribe May 20, 2019 · Repeat steps 2 and 3, clean the transmission oil pan and magnet....." (3rd time the pan gets dropped) Version 1 dtd Jan 17, 2019: View attachment TSB # 18-NA-355 Part 1.pdf View attachment TSB # 18-NA-355 Part 2.pdf (this is the one with Corvette specific procedure, pg 25) TSB #18 NA 355 was Service Bulletin Bulletin No.: 18-NA-355 Date: May, 2019 TECHNICAL Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed Attention: This Bulletin only applies to vehicles sold in the U.S., Canada and Middle East Operations (MEO). Jul 29, 2019 · Shudder TSB 18-NA-355 has been updated 7/19. 96258 Views 354 Replies 83 Participants Last post by DieselDrax , Sep 26, 2022 Jump to Latest. B. BevyofChevys Discussion starter · Jul 29, 2019. I just caught wind of a very important update to the transmission shudder TSB. Apparently, as of July 9th, the TSB has been revised to no longer require ... Sep 18, 2019 · C7 General Discussion - LATEST TSB 18-NA-355 for AUTO TRANS SHUDDER - I found and attached the latest TSB 18-NA-355 regarding automatic transmission shudder. It was on the NHTSA website. The latest update is July 29, 2019. I also found another bulletin that applies, see attached TSB 19-NA-142 Jan 4, 2022 · They were not willing to admit that this is a widespread problem. I showed them the TSB 18-NA-355 that describes the problem. They said a new TSB was released in 2022, TSB 16-NA-361, where it states that this is normal operation and replacing any transmission components will not resolve the problem. Technical Bulletin - #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) - For 2017 Cadillac CT6. This bulletin is found in the CT6 Service Manual (Europe, Korea, N America, Other IO). Jan 17, 2019 · GMC TSB 18-NA-355 Make: GMC Number: 18-NA-355 Title: Shake And/Or Shudder During Light Throttle Acceleration Between 25 And 80 Mph (40 And 128 Km/H) At Steady Speed Date: 1/17/2019 Models: 2017-2019Canyon 2018-2019Canyon All Terrain 2017-2019Canyon Denali 2017-2019Canyon SL 2017-2019Canyon SLE 2017-2019Canyon SLT 2015-2018Sierra 1500 Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2016 Chevrolet Silverado - 4WD The document preview is shown on the right. To view the entire document you need to have a subscription. SubscribeFor further information and the fluid exchange procedure, refer to GM corporate Technical Service Bulletin (TSB) 18-NA-355, available in Service Information. The Kit includes: • DT-52263-1 Block Assembly (with 10 foot long fluid drain hose and spring clamp)#18-NA-355 is the procedure that fixed my shudder issue. It took me three trips to the Dealership, and a test drive by the Service Manager for them to perform the TSB. 2017 Colorado Z71 V6 4WD Crew Cab -Leer bed cap.#18-NA-355 is the procedure that fixed my shudder issue. It took me three trips to the Dealership, and a test drive by the Service Manager for them to perform the TSB. 2017 Colorado Z71 V6 4WD Crew Cab -Leer bed cap.Has the TSB 18-NA-355 Transmission Fluid Exchange fix your transmission shutter issues. We've linked to so many versions of TSBs it's easy to be looking at one when you think it's the other. I believe the one dated August 2019 is the most recent, with the last revisions in July, unless someone has found one that's even more recent.Received 34 Likes on 25 Posts. A8 Flush, TSB 18 NA 355 Cost $408.48. 2016 Z06 Z07 with 20800 miles. Experienced the shudder. Mild and intermittent, but there. I searched everywhere for the reference for this service to be done at no charge but no luck. I paid $408.48.Jul 28, 2019 · Evidently that one and 18-NA-355 have just been updated with the new information and keep their #s. 2017 GMC Canyon Denali V6 CCSB 4X4 [/QUOTE The TBS # on the work order for my 2019 Colorado was 18-NA-355. 20 qts triple flush 7/29/2019

Page 2 March, 2019 Bulletin No.: 18-NA-355 Shudder Test Refer to the table below for conditions pertaining to specific applications. In each vehicle, constant throttle input on a smooth grade is desirable. PicoScope Measured Frequency is the approximate vibration frequency where TCC Shudder can be found, discussed in detail below.. Gecko

18 na 355

Jul 29, 2019 · I just caught wind of a very important update to the transmission shudder TSB. Apparently, as of July 9th, the TSB has been revised to no longer require diagnostic procedures. This is obviously big news for those of us who have had to jump through dealer hoops to get anything done. TSB 18-NA-355 was updated July 2019 negating the need for the picoscope diagnosis (see the bottom section in your link), and dealerships were directed to flush their existing stock. Both versions of 18-NA-355 used the same exact Mobil 1 fluid (or the TSB would have had a different number), which my dealership began using Jan 2019.Title: #18-NA-355 - Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at Steady Speed - (Mar 30, 2020) Vehicle: 2016 Chevrolet Silverado - 4WD The document preview is shown on the right. To view the entire document you need to have a subscription. Subscribe Torque converter clutch shudder issue per TSB# 18-NA-355 (July/8/2019) Doc ID: 5181942 replaces TSB 16-NA-175 & 18-NA-177 Learning Center Course 10218.12V All gave some, some gave all, protesters gave nothing.18-NA-355 18-NA-355 Shake And/Or Shudder During Light Throttle Acceleration Between 25 And 80 Mph (40 And 128 Km/H) At Steady Speed 1/17/2019 ATS Luxury ATS Premium Luxury ATS Premium Performance ATS-V CT6 Luxury CT6 Platinum CT6 Plug-In CT6 Premium Luxury CTS Luxury CTS Premium Luxury CTS Vsport CTS Vsport Premium CTS Vsport Premium Luxury CTS-VC7 General Discussion - LATEST TSB 18-NA-355 for AUTO TRANS SHUDDER - I found and attached the latest TSB 18-NA-355 regarding automatic transmission shudder. It was on the NHTSA website. The latest update is July 29, 2019. I also found another bulletin that applies, see attached TSB 19-NA-142Mexico and Export Regions should follow Bulletin 19-NA-018. Note: This procedure should only be completed once per vehicle. Any vehicle that returns with suspect shudder should be diagnosed utilizing published diagnostics, GDS, PICO Scope or other diagnostic tools. Sometimes shudder is not caused by the torque converter clutch (TCC).Aug 3, 2019 · 18-NA-355 and 19-NA-121 have been updated effective July 9, 2019 to eliminate the diagnostics portion within the TSB's and the labor times have been updated to reflect the removal of the diagnostic procedures. Vehicles presented with suspected shudder within the published build dates should have the prescribed fluid exchange procedure performed. Mexico and Export Regions should follow Bulletin 19-NA-018. Note: This procedure should only be completed once per vehicle. Any vehicle that returns with suspect shudder should be diagnosed utilizing published diagnostics, GDS, PICO Scope or other diagnostic tools. Sometimes shudder is not caused by the torque converter clutch (TCC). Bulletin No.: 18-NA-161 October, 2019 Page 3 Correction 1 Important: The following steps must be completed in order. Grasping or attempting to rotate cables could affect readings and should be doneafter performing the voltage drop measurement. Note: When checking voltage drop, the voltage drop should be performed with the fuel The issue about the TCC shudder that many of us have experienced, and apparently carried over to a variety of GM models with the same trans assembly, seems to pretty accurately described in TSB #18-NA-355 (22 pages). I got the TSB number, because the dealer printed it in my service invoice (N/C, since I am under the powertrain warranty).18-NA-355 TSB (Technical Service Bulletin) which I think is for the transmission fluid flush, the latest update addresses “torque converter clutch (TCC) shudder conditions on 8L45 and 8L90 ” eight-speed automatic transmissions, RPO codes M5N, M5T, M5U, and M5X. Affected vehicles include Chevrolet, GMC and Cadillac vehicles, as follows.May 6, 2022 · The issue about the TCC shudder that many of us have experienced, and apparently carried over to a variety of GM models with the same trans assembly, seems to pretty accurately described in TSB #18-NA-355 (22 pages). I got the TSB number, because the dealer printed it in my service invoice (N/C, since I am under the powertrain warranty). .

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