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Chevy Silverado and GMC Sierra Transmission Problems

503 messages,  Last post on Nov 10, 2009 at 5:28 PM

You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Transmission, Truck


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#432 of 503
Re: HELP!! [dotr04] by akjbmw
Apr 10, 2009 (12:02 pm)
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Replying to: dotr04 (Apr 08, 2009 9:43 am)

Any other folks thinking heat related?
Plastic pistons in the valving process start to crack (older Sable/Taurasourus do) and get stuck in position from freeway speed heat? Maybe gunk collection?
Find a trans shop or mechanic you trust.
I would expect a shop to be required to do a whole trans redo. Liability issues would prevent a less expensive valve body "patch".
#433 of 503
Re: Clunk (down shift) 10-15 seconds after being at a complete stop [firejj by utlagatus
Apr 12, 2009 (10:25 am)
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Replying to: firejj09 (Apr 05, 2009 12:55 pm)

I have an 07 GMC Sierra and experience the same problem. It doesn't happen every time. Let me know if you find out anything and I'll do the same.
#434 of 503
1995 CHEVROLET SILVERADO TRANNY!!!!! by wwc_da
Apr 14, 2009 (7:11 pm)
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PLEASE HELP ME OUT ANY WAY YOU GUYS CAN!! I JUST BOUGHT A 1995 CHEVROLET SILVERADO Z71 TRANNY WAS NOT SHIFTING OUT OF 2ND TO ANY OTHER GEAR!!!!! SO I HAD IT REBUILT PUT IT BACK IN AND IT SHIFT'S HARD FROM 1ST TO 2ND... JUST LIKE IT WAS DOING BEFORE I HAD IT REBUILT... AS WELL AS IT STILL WON'T SHIFT OUT OF 2ND TO ANY HIGHER GEAR!!!????????
#436 of 503
2003 5.3l Z71 clunks and such by garlinghouse
Apr 15, 2009 (12:47 pm)
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Hi, this is my first post. i am a former Dodge service advisor so I have some mechanical experience in trucks. I currently purchased an 03 chevy Z71 ext cab with 5.3l. I have the steering shaft clunk issue. a buddy of mine got a new steering shaft put in which is just like the original. he is starting to have issues again. my suggestion is purchasing a updated heavy duty one through LMC truck catalog. it runs about $379.00 and claims to solve this issue. second, I also have the 2nd to 3rd gear shift clunk underneath my truck at low speeds or going up hills. Another buddy of mine has an 04 sierra ext cab Z71 with 5.3l and had the same issue at 22k miles. He got this issue fixed at the gmc dealer where he lives, they replaced his driveshaft with a beefier one which looks like a 2500hd shaft not sure though but definately beefier than the stock one. he now has 40k miles and says he has had no further problems. Hope this is helpful, I plan to do the same with mine and also put the steering shaft from LMC when i have the money to do so (Damn Economy!). Overall i am pleased with my truck and absolutely love the ride, though not as exciting when flooring it like a Hemi but still satisfies my needs!
#437 of 503
Re: Clunk (down shift) 10-15 seconds after being at a complete stop [firejj09] by detbreakdown
Apr 16, 2009 (6:37 am)
Reply

Replying to: firejj09 (Apr 05, 2009 12:55 pm)

I would suggest you have someone check the speed sensor it tends to get stretched out then it shorts out.
#438 of 503
Re: Clunk (down shift) 10-15 seconds after being at a complete stop [firejj by eug3
Apr 17, 2009 (1:21 pm)
Reply

Replying to: firejj09 (Apr 05, 2009 12:55 pm)

I have 2007 Sierra that does the same thing. they lube the shaft today I dont believe this will work. I will let you know
#439 of 503
p0700 transmission code on allison by kevinc70
Apr 14, 2009 (11:41 am)
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#440 of 503
p0700 transmission code on allison by kevinc70
Apr 14, 2009 (11:41 am)
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I have a check engine light on in my 2003 GMC sierra 2500 h.d with the allison and when I scan it a p0700 transmission code comes up and wont erase. The truck also has no reverse lights and the steering column indicator does not work, along with DIC (driver info center) could this be linked or just a coincidence. It seems to shift and operate fine. Just wondering if anybody had a issue like this or simular.
#441 of 503
97 chevy trany problem by guitaro
Apr 28, 2009 (4:12 pm)
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My '97 chevy does not want to shift from 1st to 2nd at first, but after it does I can drive a hundred miles and its fine. This problem is getting more frequent and lasting longer everytime. If anyone knows anything I could sure use some help. Other than when I very first take off there is no hint off a problem.

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