2019 Colorado torque converter prob.

[email protected] · February 16, 2019

My 2019 Colorado 8 speed V6 (purchased 11/11/18) has a torque converter issue, started at about 400 miles. They have changed the transmission fluid seemed better for a while then came back. Took it back (2000 miles) in they had it for 2 days and then I was told that GM knows about the problem they have no fix and have been told not to replace any more torque converters, cause it's not fixing the problem either , was told to just drive it I have a warranty. Not sure what to do now. Love my truck but the problem is annoying. My first brand new vehicle. Was hoping to not have to deal with any problems for a very long time. Any suggestions on how to handle?

bisonbumps · February 21, 2019

On 2/16/2019 at 10:53 AM, [email protected] said:

My 2019 Colorado 8 speed V6 (purchased 11/11/18) has a torque converter issue, started at about 400 miles. They have changed the transmission fluid seemed better for a while then came back. Took it back (2000 miles) in they had it for 2 days and then I was told that GM knows about the problem they have no fix and have been told not to replace any more torque converters, cause it's not fixing the problem either , was told to just drive it I have a warranty. Not sure what to do now. Love my truck but the problem is annoying. My first brand new vehicle. Was hoping to not have to deal with any problems for a very long time. Any suggestions on how to handle?

A lurker on at least three other similar threads. The key words for you to search on are "Colorado shudder". Known issue.

There have been multiple attempted fixes over time. Previous fixes involved older versions of fluid flushed without using or following the latest and greatest "approved" method, so do not be satisified with "it was flushed". Latest is to make sure service follows latest procedure in TSB 18-NA-355. Latest and greatest Mobil ATF using a triple flush process requiring a Bosch device that a service department will get over time delivered free of charge to them. Do not expect the flush to work on it's own as the process details how the Bosch device must be used to satisfy the TSB for the shudder. Again, do not expect that all dealers have the device yet or have been using it long if they do have it. Keep following multiple Colorado shudder threads for various updates from various owners. I was looking to buy at one point ...

Edited February 21, 2019 by bisonbumps

newdude · February 25, 2019

There is a new, third formulation of the fluid out now. Get ready for another trip back for them to change it again.

Nationwide rollout of the special tool has already occurred, the only thing you have to make sure is if they have the new fluid.

OldChevyNut · March 12, 2019

It is well known, and even acknowledged by GM, that the problems with this transmission cannot be fixed. Therefore, as soon as possible and with as few miles on the vehicle as possible, take it back to a dealer and request the defect be repaired. Do this several times, keeping all records of when, where, action taken (even if none), any advice or comments made by dealer persons, and if possible, record everything on video with sound. Remember it's not the dealers fault you bought a vehicle with a problem that cannot be fixed by any means, but the dealer is the one that's stuck with trying to fix it. Obtain all the information you can find on this problem, and even similar problems in other models (because the same transmission is used in multiple other vehicles), obtain all applicable GM TCB's (such as TCB 18-NA-177 and TCB 18-NA-355) that have any bearing on the problem, and then after a "reasonable number" of repair attempts apply for Arbitration according to the requirements applicable in your state. In Arbitration, which is free to the vehicle purchaser, present all evidence regarding nature of the problem, past history and the manufacturers inability to correct these serious defects, evidence that the issue exists in the vehicle you purchased, and the history of repeated attempts by dealer(s) to fix the problem in your vehicle but that the problem still exists. When is all is said and done, you may be given a refund of the vehicle purchase price, a replacement vehicle having the same configuration and options, a decision to return to a dealer for further repair attempts, or no other action or remedy. In the case of the 8L45 / 8L90 transmission issues, arbitration in many states has already ordered refunds and replacement vehicles, as the problems with this model transmission have been around for so long and are so well documented. In any event, Good Luck.

ckatech · May 3, 2019

https://www.autoblog.com/2019/04/25/gm-transmission-class-action-lawsuit/

Class Action lawsuit brewing

OldChevyNut · May 3, 2019

I must admit I was unaware of this one. But the following is my opinion and nothing else.

Never underestimate GM and their legal staff. They will use every tactic in the book, and invent new ones, to delay and thwart any conceivable move against themselves or their interests.

For GM, the existing legal actions filed against them, and even ones yet to be filed, will remain in the legal system for decades to come, and in the end, will come to NOTHING. GM will not allow any other outcome.

Existing owners having issues with their vehicles will be allowed to complain until end of warranty, at which time they will be ignored.

In my experience with Class-Action suits against GM, you'll get better odds buying lottery tickets.