[escapepilot]

First torque converter was replaced for shudder under warranty at around 57,000 miles. #2 is starting to exhibit the same symptoms now that I'm in the 93,000 mile range. Dealer said it MAY be covered under the parts warranty BUT they want to do the PCM recall update which could be a problem w/ my tune so....

Is anyone currently using the RevMax triple disc torque converter? It's $$$$, but pulling a trans isn't cheap either even if the Delco TC is.

 

[oak1971]

I used to think OEM parts were the best quality, now not so much.

 

[Devan coss]

First torque converter was replaced for shudder under warranty at around 57,000 miles. #2 is starting to exhibit the same symptoms now that I'm in the 93,000 mile range. Dealer said it MAY be covered under the parts warranty BUT they want to do the PCM recall update which could be a problem w/ my tune so....

Is anyone currently using the RevMax triple disc torque converter? It's $$$$, but pulling a trans isn't cheap either even if the Delco TC is.

I have a little shudder in mine as well had the tuning company add a little more line pressure which helped some but if it goes out I’m looking at just getting a remanded tranny

 

[tag1]

i am a retired stock holder of a chain of new car stores,one of which is a gmc store. my service director told me( when asked about the tranny being a weak link in the canyon diesel ) if it were me when a trans gets 100k on it( unless its an allison) i would pull it and install a new torque converter as a preventative maintanance measure.i think i may do that, when the timecomes.i DID FLUSH AND CHANGE THE FLUID after its first 5,000 mile service. i also change oil, filter, and fuel filter on the engine every 5 k miles i could'nt be happier with the truck.

 

[Devan coss]

I have a little shudder in mine as well had the tuning company add a little more line pressure which helped some but if it goes out I’m looking at just getting a remanded tranny

I just started having a weird noise with mine sounded like a turbo whining had it replaced but still same noise wonder if it’s the tranny as I have had a tranny shudder since about 60000 miles

 

[escapepilot]

Took it to a reputable local shop and after a test drive and diagnostic, he felt the shudder could be remedied with a fluid change. He said they had lots of success w/ Mobil 1 synthetic HD. I couldn't find an HD so I think it may be the LV version. He also suggested a Lucas "anti-shudder" additive".

 

[bigoilbob]

Took it to a reputable local shop and after a test drive and diagnostic, he felt the shudder could be remedied with a fluid change. He said they had lots of success w/ Mobil 1 synthetic HD. I couldn't find an HD so I think it may be the LV version. He also suggested a Lucas "anti-shudder" additive".

GM has changed out to full syn trans fluid for at least a year now, that I know of. Since I don't overwork my trannie with big tires, tune, not using using the tow mode when I should, I stuck with stock.

We have ~45K miles, almost half with a GCVW of ~10,500# and the extra windage of a (admittedly aerodynamically clean) bed hitch trailer, with no trans problems. But I'll also say once again, sticking to 60 m/h unloads EVERYTHING.....

 

[escapepilot]

Started my trans fluid change tonight and had some questions I hope someone can answer.

When I removed the plug at the bottom that is used to indicate when the trans is full, I got about 4 quarts out. It was serviced at the dealer 40,000 miles ago. Seems like that is overfilled.

Since my truck is lifted and now sits level, should I attempt to adjust fluid level when I add fluid after the change?

I’m adding a drain plug to the pan to make the next change easier. Anyone recommend an ideal location?

Fluid is really dark for only 40,000 miles but doesn’t smell burnt. Will post pics later.

 

[SFLTruck]

If you removed the plug without the engine running you will get more out because the oil will settle in the pan (low spot) while the pump is not running. So long as you get it refilled and follow the required method of properly checking the fluid level with the vehicle running, running the trans to the proper temp and running it through R N D and so on you should be fine. The difference in the stock verses the sitting level now is not going to make a noticeable difference. I only had 10K on mine and the color difference was quite noticeable from old to new fluid. Change the filter while you're in there...

 

[Devan coss]

Started my trans fluid change tonight and had some questions I hope someone can answer.

When I removed the plug at the bottom that is used to indicate when the trans is full, I got about 4 quarts out. It was serviced at the dealer 40,000 miles ago. Seems like that is overfilled.

Since my truck is lifted and now sits level, should I attempt to adjust fluid level when I add fluid after the change?

I’m adding a drain plug to the pan to make the next change easier. Anyone recommend an ideal location?

Fluid is really dark for only 40,000 miles but doesn’t smell burnt. Will post pics later.

Way over filled it should barely even drip out of that check bolt

 

[escapepilot]

Way over filled it should barely even drip out of that check bolt

Engine was off so that was probably the reason.

 

[Devan coss]

Engine was off so that was probably the reason.

Probably need to have the tranny between like 80 degrees and 120 something when checking it as well

 

[escapepilot]

Just an update - changed the fluid a week ago w/ AmsOil signature series. Just basic drain and fill. The shudder I was experiencing is gone and no signs of it. If anyone is experiencing shudder, try the fluid change first.