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Chevy Silverado and GMC Sierra Transmission Problems

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Comments

  • I am having the same problem with my 2001 Sierra. Did you figure out what the problem was?
  • 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.
  • 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?
  • 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.
  • 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.
  • 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.
  • 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?!
  • 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.
  • It wasnt that cold this morning where I live. Only about 40 or so. Also, the problem didnt go away once it warmed up. However, when I went out to grab some lunch the transmission was back to normal. Which in a way bothers me more because the problem might be harder to fix if its not a consistent thing that a mechanic can see. This makes me think of a previous post I read in this forum where the problem would go away when the truck was turned off and turned back on again. Also, I forgot to mention that this morning when this problem began my "service engine soon" light came on as well. The transmission problem seems to be gone for the moment but the light remains. Although I'm quite sure the light comes on when theres an emission problem. Either way, its been a bad day for my truck and I wish I knew what the cause was, if any, and how to fix it.
  • Auto Tranny problems are harder to fix when they have mystery problems. My dodge ram 1500 had tranny mystery problems starting at about 34,000 miles just before the warranty was up. The symptoms were slight slipage at about 60 mph, of about 200 rpms several times and then it would stop until i dropped below 60 and then would start over again. I always thought it was the torque converter having problems locking up. It also had problems with erratic shifting in and out of first and second gear when making a turn, it would hunt back and forth between first and second gear several times, plus the problem it had starting out in second gear when it was cold out. I had it back to the dealer about three times over the next few thousand miles, they scoped checked it for trouble codes, and couldn't find any. The tech took it out for test drives and it wouldn't do it. I was told they couldn't do anything untill they diagnosed the problem and swap the faulty part out, but not to worry, they have it on record. So i drove it that way for another couple of years untill it failed and as i mentioned earlier it cost a few bucks to fix it(so much for having the complaints on record). I'm a little nervous about this 2nd to 3rd clunk i get with my silverado transmission occasionally because i've been down this road once before, don't want to go there again. Hope you have better luck finding the problem then i did.
  • Auto Tranny problems are harder to fix when they have mystery problems. My dodge ram 1500 had tranny mystery problems starting at about 34,000 miles just before the warranty was up. The symptoms were slight slipage at about 60 mph, of about 200 rpms several times and then it would stop until i dropped below 60 and then would start over again. I always thought it was the torque converter having problems locking up. It also had problems with erratic shifting in and out of first and second gear when making a turn, it would hunt back and forth between first and second gear several times, plus the problem it had starting out in second gear when it was cold out. I had it back to the dealer about three times over the next few thousand miles, they scoped checked it for trouble codes, and couldn't find any. The tech took it out for test drives and it wouldn't do it. I was told they couldn't do anything untill they diagnosed the problem and swap the faulty part out, but not to worry, they have it on record. So i drove it that way for another couple of years untill it failed and as i mentioned earlier it cost a few bucks to fix it(so much for having the complaints on record). I'm a little nervous about this 2nd to 3rd clunk i get with my silverado transmission occasionally because i've been down this road once before, don't want to go there again. Hope you have better luck finding the problem then i did.
  • When I am at low speeds (aka: parking lots,traffic,etc.) It feels like there's a delay when its going forward or in reverse. The best way I can describe it is, it feels as if its loose or hitting against another part. The feeling does not occur at higher speeds. I would appreciate any info on this matter.

    Thanks
  • I bought a 2007 Classic 1500HD in October and to me, it does seem somewhat sluggish when I go forward after I start it up and am putting it into drive,and/or reverse. It doesn't feel to me though like anything is loose or one part hitting another. It does kind of seem that something isn't connecting quickly, if that makes sense.

    Are there any other problems you are having with this truck? I would like to know!
  • I have 2004 2500 HD with a 5 speed allison transmission. It will not shift into overdrive until you get over 2500 rpm and you still have to let off the gas to make it go into overdrive. if you don't let up it will not shift into overdrive.I need to know if the ecu reflash will help the situation or not. It gives the trouble code p700 and also a wierd U2104 and U2105. My book does not have the meaning of these codes in it. Please let me know if you can help..
  • To blaroche;
    I own a 1999 Silverado Z-71 4x4 bought used, and loved it.
    Now after 77350miles transmission went,no kind of warning just broke down,managed to get to Clinton Chevy Dealer and was told I need a new trans. They put a new rebuilt in truck gave me 75,000 mile 3year warranty for $3420.00 bucks well the truck made it to 99,925 thats only 22,925 miles but as luck would have it I was over the 3-Year limit by 63Days and was sent on my way Busted Truck and all. So much for customer service. Now before the tranny went the 2nd time the Truck needed a new "REAR" $1200 bucks and lets not forget the Brake lines along the frame rail blew a hole and was unable to stop. Lesson= I WILL NEVER OWN CHEVY TRUCK WHILE I AM ON THIS PLANET! GOOD LUCK TOO YOU A.R.BLEW
  • :) have a 2004 gmc sierra the knob on the radio seems to be
    waring out any suggestions.
  • rvd24rvd24 Posts: 1
    have a 2004 gmc sierra the knob on the radio seems to be
    waring out any suggestions.

    ...........you could try singing to yourself.

    kidding. i'm trying to laugh. backed out of my parking spot at work today put my 02 silverado in drive and BAM!!
    had forward gears but man did they whine. pulled into a gas station for a look-see and found out i no longer had reverse. towed to a tranmission shop for the good news. "busted sun gear,common problem".i guess i faired a little better than some of you guys. i've got 95k miles on her and he says about 14-1500 total rebuild.
  • jjl2jjl2 Posts: 1
    Owned GM trucks since I bought my first 2WD HD GMC new in 1977. Always been the Chevy guy in the Ford Chevy debates - trucks, nascar, you name it. My fifth GM truck bought new, June 2005. 1/2 ton Silverado work truck - 4x4, I always have tool boxes, ladder racks and usually plows on-board, that's how I make my living. Newest truck has tranny shift problem, GM is aware, has no fix. It's results in a loud draintrain lash clunk that's make me think the universals are going. Also have the lash in the steering linkage/shaft. It's been greased at the dealership 3 times. GM is aware, there is no fix. The rattle is loud when this happens, feels like the front end is going to fall out, I can feel the vibration through the floor. Also, I have the problem when I roll ahead to stop and back into my driveway, my steering turns hard or not at all, until my truck is in motion. It feels like my tires are touching a curb and can't turn. Again, GM is aware of the problem, claims it is normal. Have also had the truck into the garage on 6 occasions when the check engine light came on. I work my trucks, but am easy on them, got 175,000 miles on my last plow truck without ever touching a front end part or having tranny trouble. Also, what part of Southern Florida did the engineer hail from that designed the no-lift windshield wipers. I can't even fit my snow brush under them. Anybody else have excess quality problems with their newer GM?
  • KCRam@EdmundsKCRam@Edmunds Mt. Arlington NJPosts: 3,496
    U2104 CAN Bus Reset Counter Overrun
    U2105 CAN Bus Error ECM
    P0700 is Transmission Control System Malfunction

    Sounds like your Allison has a computer glitch. Dealer will have to diagnose that.

    kcram - Pickups Host

    KCRam - Pickups/Wagons/Vans+Minivans Moderator

  • Ok, I have a slight issue,
    I have a 4l60-E transmission with no reverse, It had reverse when I took the trans out to replace a broken pump. The truck is locked down and will not move even in neutral. It shifts and everything in other gears, what could the problem be? any clues?
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