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Chevy Silverado and GMC Sierra Transmission Problems

503 messages,  Last post on Nov 10, 2009 at 5:28 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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#446 of 503
Re: Auto Transmission clunk [jsross44] by sonny24
May 13, 2009 (5:12 pm)
Reply

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.
#447 of 503
CHEVY AND GMC TRANNY by txredneck
May 14, 2009 (11:24 am)
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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 503
Tranny problems by mikesquid
May 14, 2009 (12:00 pm)
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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?
#449 of 503
2003 Chevy Silverado ginding sound before and after trans replacement by hoookup
May 19, 2009 (5:21 pm)
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I started hearing a grinding noise from what sounded like the transmission. It would happen when at low speeds in 1st or 2nd gear. I would have to pull over, shift to neutral, and stop to get the noise to stop. It happened intermittently but started happening more and more. Assumed it was the trans, and had it replaced with a rebuilt. Two days later the sound returned, and getting progressively worse. the drive shaft looks like it's within limits, they looked at the rear differential and it looks fine.
Any ideas?
 
thanks
 
2003 Chevrolet Silverado
5.3L V8
#450 of 503
Re: Tranny problems [mikesquid] by txredneck
May 20, 2009 (1:23 pm)
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Replying to: mikesquid (May 14, 2009 12:00 pm)

I WOULD GUESS THAT IT IS THE SEAL AND THAT IT STARTS TO LEAK WHEN IT GETS HOT. I HAD A CAR THAT DID THAT AT ONE TIME. ADDED SOME LEAK SEALER FOR TRANSMISSION AND IT QUIT. IT TOOK IT A COUPLE OF DAYS BUT HAS BEEN GOING NOW FOR SEVERAL MONTHS WITH NO PROBLEMS. I AM NO EXPERT BY ANY MEANS BUT THIS DOESN'T COST MUCH AND I WOULD THINK IT WOULD BE WORTH A TRY.
#451 of 503
Re: 2003 Chevy Silverado ginding sound before and after trans replacement [hoookup] by txredneck
May 20, 2009 (1:27 pm)
Reply

Replying to: hoookup (May 19, 2009 5:21 pm)

IT COULD BE A LOT OF THINGS BUT SINCE YOU REPLACE THE TRANNY AND IT DIDN'T HELP I WOULD LOOK AT U JOINTS, BEARINGS, OR MAYBE EVEN THE BRAKES. WOULD HAVE TO NARROW IT DOWN AS TO WHERE IT IS COMING FROM TO TELL ANYTHING MORE.
#452 of 503
2001 2500 HD Duramax HELP! by ruftoyzdawtr
May 23, 2009 (9:20 am)
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I have an 01....we bought it about 2 months ago and it has been in the shop for the last month, we can't figure out whats wrong with it. It has an allison tranny, computer was reading bad tranny codes so we had the tranny rebuilt, had GM re-flash the computer. It didnt work, It was putting itself in limp-mode. Going to about 40 mph then shifting into neutral. It's still doing it even after the tranny rebuild. EVERYTHING in that tranny is new. Have tried a lot of things, replaced switches, rebuilt torque converter, etc. nothing has worked...still is in fail safe limp mode. Any one know anything about this? maybe give me some suggestions on what to check around for?
#453 of 503
Any info by bob261
May 28, 2009 (2:46 pm)
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I have a 2000 Chevrolet ext cab 4x4, i have had the transmission rebuilt and now it will only go into 1st and reverse. The pump as been replaced and the valves all check. any ideas?
#454 of 503
2004 GMC Sierra Ext SLE 5.3l by 04sierraz71
May 28, 2009 (10:02 pm)
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I bought a 04 Sierra with 110km on it from a dealer in Edmonton. It passed inspection and was delivered to me last night in calgary. Sometime today I was coming around a corner and I punched it a little bit, all of the sudden I heard a major CLUNK. Then it started reving like crazy. Now my truck won't move in D or 3rd, I had to limp home in 2nd gear.
Super pissed because I now have to take it into the shop and I haven't even had it for 12hrs. Dealer was semi helpful in arranging a local mechanic, but I am worried it may happen again. And from all the posts in these forums my confidence if definitely hanging by a thread.
Any thoughts as to why my truck moves like a castrated dog.....???
#455 of 503
key removed when not in park gear by chuck1940
May 31, 2009 (3:14 pm)
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My wife managed to turn our GMC Sierra 2001 automatic off and removed key when not in park gear. Now key will not turn, everything is locked up unable to get gearshift in park or to move shift in any way or to start vehicle.

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