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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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#20 of 506
2003 Silverado Z-71 Problem by blaroche
Dec 14, 2006 (7:21 pm)
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Hello,
I have recently been noticing a possible problem with my 2003 Silverado (automatic transmission/4 wheel drive system) Z-71. The problem is kind of weird in that the transmission seems to be working harder then normal under normal operating conditions. The truck only has 40,000 miles on it and has really only been used on the highway. It almost seems that the truck isn't driving as smoothly as it once did. Almost as if the front end is ready to lock into 4 wheel drive when only 2 wheel drive is selected. I also had one instance where the transmission seemed to slip back into neutral. I even had a passenger ask if I was dragging something the other day. I have noticed some slight changes in the handling characteristics of this vehicle but nothing that I thought was serious. Has anyone experienced anything like this?
 
Thanks for any assistence.
#21 of 506
Automatic Transmission!!!!!!!! by tjustice
Jan 08, 2007 (7:58 am)
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Hello,
  I have a 1996 Chevy Silverado pickup truck. It has a automatic overdrive transmission. I recently had the transmission filter replaced and put about 5 quarts of dexron 3 automatic transmission fluid in it. So I thought that it would shift right but I was wrong. It shifts into first at about 10 mph but when it goes to shift into second (which is suppose to shift at about 30 mph.) it doesn't shift i even had it up to 35-40 mph I would appreciate any advice that anyone can give to me.
#22 of 506
Re: Any ideas problem..??? [mfk8] by cfernets
Jan 18, 2007 (8:16 pm)
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Replying to: mfk8 (Oct 27, 2006 9:20 pm)

I am having the same problem with my 2001 Sierra. Did you figure out what the problem was?
#23 of 506
Auto Transmission clunk by jsross44
Jan 29, 2007 (7:09 pm)
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I have a 2005 silverado ext cab Z71 that makes a clunk noise when shifting from 2nd to 3rd gear under a light throttle condition. It dosen't seem to do it when i'm heavy on the throttle. I was told by chevrolet it is caused by a tall second gear and is normal and will not do any harm to the tranny. Has anyone else out there had this problem with their silverado's transmission and had it fixed. Outside of this annoying clunk the tranny shifts fast and tight.
#24 of 506
Re: Any ideas problem..??? [mfk8] by chronic_mka
Jan 31, 2007 (5:04 pm)
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Replying to: mfk8 (Oct 27, 2006 9:20 pm)

Hey. I have a 1999 silverado 1500 and does the exact same thing. Right now I just have it parked and don't use it. Did you get it fixed? what is wrong with it?
#25 of 506
Re: Any ideas problem..??? [chronic_mka] by cfernets
Feb 01, 2007 (9:19 am)
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Replying to: chronic_mka (Jan 31, 2007 5:04 pm)

It appears to be the common problem of sun gear failure. From what I read on the net, the only thing to do is rebuild the tranny or get a new one. The GM dealership here said it would likely be $1000 just to diagnose the problem, as they would likely have to tear down the transmission. Mine is parked for now. I'm getting a salvage transmission with low km's on it and selling the truck before it happens again.
#26 of 506
Re: Any ideas problem..??? [chronic_mka] by jsross44
Feb 01, 2007 (11:00 am)
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Replying to: chronic_mka (Jan 31, 2007 5:04 pm)

I was told by chevrolet that this 2nd to 3rd gear clunk is normal and there isn't a fix for it. I'm looking for more info from other silverado owners on this auto tranny problem before i bring it back and fight with the dealer. I've already been through tranny problems with my former truck a 2000 dodge ram 1500, the auto tranny in it sucked and i'm not looking forward to going down that road again.
#27 of 506
Re: Any ideas problem..??? [jsross44] by cfernets
Feb 03, 2007 (7:45 pm)
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Replying to: jsross44 (Feb 01, 2007 11:00 am)

Yeah, I'm aware that they say it's a common problem......as long as nothing comes out of it. I had the same "non-problem" clunk happen, and that's when everything went to hell. Now, I've heard the clunk before, and nothing happened afterwards, but I guess this was the final straw. My theory is that the clunk problem cumulates, and you might be able to get away with a hundred, a thousand, or ten thousand clunks with no repercussions until one day some component of your tranny cannot take it anymore and fails. Most likely after it's off warranty and GM doesn't have to deal with it anymore.
#28 of 506
Transmission problem by ibis85
Feb 08, 2007 (9:38 am)
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I own a 2002 silverado. This morning out of no where I felt my trucks transmission different. As I left for work my transmission felt like it wasnt in the right gear. Asi accelerated from a complete stop the truck would not accelerate with any power until it got to about 25 mph. When I put my truck in 1st gear and 2nd gear manually it felt perfect however when I put it in drive it felt like I had manually put it in 3rd gear and was trying to accelerate from a complete stop. What the hell is going on?!
#29 of 506
Transmission problem by jsross44
Feb 08, 2007 (10:10 am)
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My current truck is a 2005 chevy silverado with a clunk noise between 2nd and 3rd gear, it doesn't do it all the time but it still annoys me, i'm still trying to gathering info and find out whats causing that, the dealer says its normal. As far as your problem with your 2002 silverado tranny. I had that same problem with my old truck, a 2000 dodge ram. When the weather was real cold out, down in the single digits, the tranny would start out in second gear and had to be shifted manually until it warmed up. Then after the warranty when the tranny started acting up(it would go completely out of gear when it downshifted)dodge didn't love me anymore like they did the day i bought it and it cost me some serious money to get it repaired. It never really worked right after that so i ended up trading it in for the chevy.

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