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Chevy Silverado and GMC Sierra Transmission Problems

506 messages,  Last post on Dec 01, 2009 at 1:57 PM

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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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#439 of 506 p0700 transmission code on allison by kevinc70 Apr 14, 2009 (11:41 am)
#440 of 506 p0700 transmission code on allison by kevinc70 Apr 14, 2009 (11:41 am)
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 506 97 chevy trany problem by guitaro Apr 28, 2009 (4:12 pm)
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.
#442 of 506 Bucking at 45 MPH by 05radoinbg May 08, 2009 (11:10 pm)
Hey everyone. Bought a 05 Silverado 1500 5.3L last week. It has 87k on it. I am a fleet manager and I only run Chevrolets and have been proven to the durability of these trucks but I may be proven wrong with this truck. I started noticing the other day that while driving at around 45 mph, without the cruise control, the truck has a lot of bucking and jumping and vibration. Had the tires rotated and balanced today and it still seems to be getting progressively worse. I have also noticed that when driving from 40-60 without cruise, the RPM's have a lot of fluctuation... and by the way, this is annoying as crap now that I have Flow Masters! I have also started noticing that every once in a while, the transmission slips when shifting from first to second. I have never seen this kind of problem out of my trucks at work so I am stumped on where to start. Anyone have any ideas? Thanks!
#443 of 506 Re: Clunk (down shift) 10-15 seconds after being at a complete stop [detbreakdown] by Thunderman50 May 11, 2009 (8:06 pm)
Replying to: detbreakdown (Apr 16, 2009 6:37 am) I have a 2008 Sierra 1500 that does the same thing. I can be sitting at a stop and all of a sudden it will clunk almost as though I've been slightly bumped from behind by another vehicle. Also has slight clunk on 2nd to 1st down-shift at 12 mph. I've had it to dealer 4 or 5 times. Changed out yoke, did nothing. At present time I'm battling GM at the national level and locally. I won't give up. Replies to this message: obyone (May 12, 2009 2:02 pm)
#444 of 506 Re: Clunk (down shift) 10-15 seconds after being at a complete stop [Thunderman50] by obyone May 12, 2009 (2:02 pm)
Replying to: Thunderman50 (May 11, 2009 8:06 pm) At present time I'm battling GM at the national level and locally.   Battling to get it fixed or battling to get GM to buy it back?
#445 of 506 08 sierra 1500, tranny stays engaged? by pondrocker May 12, 2009 (3:42 pm)
i have noticed a few people mention the tranny clunk after stopping, mine doesn't clunk but it does seem to still be engaged when I try to stop,it is very hard to get it to stop easily, almost like having a very heavy trailer on the back. If i take my foot off the gas pedal, it will basically maintain that speed for at least 6-10 blocks, mainly between 45-55mph. I have never driven a vechile that doesnt slow down when your foot is off the gas? The tranny also hesitates for 2-4 seconds between the 2-3 shift point, almost slams your head into the steering wheel. I can feel vibrations through the floorboards & it seems to shutter in all the lower gears & the exhaust is extremely loud & odd sounding. On 4 occasions I have experienced a "surge", that is I released my foot from the gas pedal & the RPM's increased 500 & the engine sped up, lasts 3-5 seconds. Guys I have had this death trap into 3 dealerships, 1 of them 3 different times, the 3-4 clutch plates have been replaced, pcm upgrade, new PCM/computer installed, the pcm relearned many times, by the way this solves all the issues for about 500-800 miles & it morphs back into its old self. GM is of no help, 80 hours on the phone with them, now district rep in detroit is on the case, laughable. So please do not feel alone in your troubles, keep fighting, they want you to just go away that is their idea of customer service. If your new GM product works then I'ld knock on wood.Good luck
#446 of 506 Re: Auto Transmission clunk [jsross44] by sonny24 May 13, 2009 (5:12 pm)
Replying to: jsross44 (Jan 29, 2007 7:09 pm) Ihave a 06 Sierra with 34000 miles on it. Ive taken it to 2 different dealers for the clunk noise. The first told me it was backlash from the driveline.And that this was normal.The 2nd told me it was something about the 2nd to 3rd clutch, and that this was normal. So to make me happy the lubed the slip yolk and that lasted about a week and its back to doing it. Least to say Im takig it back again and now I have GM service rep from the factory involved. Also I had a black 05 and it never made this god awful noise. Replies to this message: grantorton1 (Jun 08, 2009 8:32 pm)
#447 of 506 CHEVY AND GMC TRANNY by txredneck May 14, 2009 (11:24 am)
I HAVE A 89 CHEVY HALF TON PU, TRANSMISSION IS SLOW TO SHIFT, HAVE TO WIND UP THE RPMS, THEN IT SEEMS TO SHIFT FROM 1ST TO DRIVE SKIPPING SECOND. YOU NEVER FEEL IT SHIFT INTO OD AND DRIVING DOWN THE ROAD I CAN SHIFT BACK AND FORTH FROM D TO OD AND YOU CANT FEEL ANYTHING BUT IF I LET OF THE GAS AND SHIFT INTO D OUT OF OD YO CAN FEEL IT SHIFT DOWN. ALSO IF I SLOW DOWN TO MAKE A TURN IT WILL SHIFT BACK DOWN INTO 1ST OR 2ND, CANT TELL WHICH ONE FOR SURE. ANYBODY GOT ANY IDEAS?
#448 of 506 Tranny problems by mikesquid May 14, 2009 (12:00 pm)
I Have a 1993 Silverado, My transmission only leaks when I go over 55 mph for more than an hour or so. Im not sure if it is the seal or maybe the vent? If any one can help me I would appreciate it? Replies to this message: txredneck (May 20, 2009 1:23 pm)

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