Alright I have been feeling a shudder when the tranny shifts from 1-2, only under light to moderate acceleration. When I get on the gas the tranny shudder seems to go away. Every other shift; 2-3 3-4 are smooth and there is no shudder at all. What gives, is this how our trannys were designed?

 

GM is aware of this condition and it is currently under investigation. See attached PI...


Document ID# 1830916
Chevrolet Monte Carlo


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Subject: 4T65E Light Throttle 1-2 Shift Shudder - keywords chuggle first hesitation #PIP3822 - (05/23/2006)



Models: 2001-2006 Buick LeSabre, Park Avenue

2002-2006 Buick Rendezvous

2005-2006 Buick Terraza, LaCrosse, Allure (Canada)

2001-2004 Buick Regal

2001-2005 Buick Century

2001-2006 Chevrolet Impala

2006 Chevrolet Malibu SS, Malibu Maxx SS

2001-2005 Chevrolet Monte Carlo, Venture

2005-2006 Chevrolet Uplander

2001-2003 Oldsmobile Aurora, Intrigue

2001-2004 Oldsmobile Silhouette

2001-2005 Pontiac Aztek, Bonneville

2001-2006 Pontiac Grand Prix

2001-2006 Pontiac Montana

2005-2006 Pontiac Montana SV6

2006 Pontiac G6 GTP

2005-2006 Saturn Relay




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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Vehicle may exhibit a 1-2 shift shudder at approximately 12-20% throttle angle or less. Some customers may perceive or describe this as a slip into second or a delayed shift.

Recommendation/Instructions:
Currently, this concern is under investigation by Engineering. Preliminary results indicate that repairing the second clutch and related components does resolve the condition in 90% of the cases. This will include the second clutch housing, piston, seals and clutches. In addition the driven sprocket support peak ring seals should be replaced item #613 in the parts schematic. A Dealer Technical Bulletin will be released in the near future.

The labor operation number to use is K7531.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.



GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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© Copyright General Motors Corporation. All Rights Reserved.


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Document ID# 1830916
Chevrolet Monte Carlo

 

wow very nice

 

Well at least I know im not the only one...but this sort of things doesnt usually trigger a reacall does it? So I will have to fork out some dollars for the dealer to fix it.

 

Chris M., Thanks again for sharing your knowledge.
I've been learning from your post : )
U R an asset to our forum. Give us an update on
your new Monte... Any prob's & how's the MPG ?
[:-]

[IMG]local://upfiles/714/54238329196D4138936E5060405ADFB3.gif[/IMG]

[IMG]local://upfiles/714/B5D909A1C44543709E20C951F4737A9C.jpg[/IMG]

 

Thanks allot SpaceRider! That is a great pic! I am happy to help any time I can. The car is running great and the MPG suites me fine. I took it upstate this past weekend and had a blast on the open roads. Here is a pic...


never mind the date on the pic. I didnt set the date up on my camera

 

I know that putting in a shift kit usually does not solve tranny issues, but in this case what do you guys think? Would a shift kit eliminate the shudder or would it make it even worse?

 

Mine has been doing this on occasion as well. It does not seem to happen all the time but I do notice it more under load.

I wonder if this will have a negative effect on its longevity. If it’s in the clutch pack as it looks by the great information supplied by NYCRISS I would think that the sift kit would be a long shot, but worth a try.

I will play around with my Hypertech over the next couple of weeks adjusting the line pressure to see if it helps any.

 

We can't raise up the troops and demand a fix? LETS STORM THE CAPITAL!! VIVA LA RESISTANCE!!!!!

 

I'm in!!!!!!!!!!!!


Let's roll!!


By the looks of GM's stock and market performance numbers for the first half I would say many have already made a statement regarding GM's product line.