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Chevy Silverado and GMC Sierra Transmission Problems



  • 2001 Silverado: Transmission all of a sudden will not shift from 2nd to 3rd gear. Oil is new last summer, level is ok?

    I blew a line at night last summer and smoked the 3rd gear clutches. Transmission was rebuilt and new filter and oil switched out. Electrical?

    I also hit a deer a few months ago and had to replace front differential. Don't know if this had anything to do with it.
  • chuck1chuck1 Posts: 1,405
    Do you own a truck with the six speed transmission ? These transmissions are not smooth shifting. Let's just say they are less than refined.
  • donl1donl1 Posts: 112
    I must have got a bad one...mine has always shifted fine. ;)
  • ceb66ceb66 Posts: 70
    edited July 2013
    Since this is a site dedicated to car purchases, I'm certain Edmunds would want their readers to know what other new owners are saying:

    If you're considering a new 2013 GMC Sierra or 2013 Chevrolet Silverado make sure you take it on a long test drive at 45 mph on level ground. Turn the Driver Display to Instant Economy. Ask the salesman if the Active Fuel Management AFM is seamless from four cylinders to eight. Sure GM says its seamless from eight to four. You're essentially coasting. During the test drive, determine if the transmission is growling as the AFM activates all eight cylinders. Make sure you grill the salesman with questions such as "has General Motors received overwhelming complaints about this transmission"? "Have they received complaints about clunking"? "Are there General Motors maintenance directives referencing all of the complaints"? "Do the directives instruct the dealer to avoid the issue and tell the owner "it's operating as designed"?


    In their latest seasonal publication, GMC The Magazine, on page 5, they state the "engines seamlessly switch to four cylinders." Hey GMC Magazine, why not describe the opposite, the switch back up to eight cylinders? Oh, that's right, I'm sure omission of that little tidbit was an oversight! The switch up to eight IS FAR FROM SEAMLESS. It's actually incredibly annoying and no, you never get used to it. A friend put dual pipes and glass packs on his. That makes the growling and lagging even more noticeable.

    New General Motors GMC Chevrolet Truck buyer beware and drive these trucks extensively before purchase of these new GMC Chevrolet trucks.
  • obyoneobyone Posts: 8,054
    edited July 2013
    So to summarize what you're saying is that the GM trucks are a pile of junk?

    Just trying to clarify.
  • chuck1chuck1 Posts: 1,405
    edited July 2013
    Actually, those who have driven the 2014s have said that the AFM switch is now "seamless".

    The problems you describe are isolated to some trucks between model year 2009 and 2012.

    Not all clunk. However, I am not sure if all trucks have sloppy transmissions, or some owners standards for quality are not the same. In my truck (2011) the transmission is "sloppy" and the AFM isn't a smooth transition either. Five different dealers have stated "You have the latest software".

    Your post was a "copy and paste" from a poster who used to post called "string" who should have never purchsed his truck in the first place. FYI-he got rid of the truck and went to a Honda Accord "Crosstour". Think about it.....
  • keithringkeithring Posts: 1
    I have a babied, garage kept 2002 Silverado 1500 4.8 Auto with 78k miles, never towed or plowed with it. Noticed it shifting a bit hard yesterday for the first time, this morning it really slammed and now I have no reverse and it is obviously messed up. Common for this year model? Ideas on cause?
  • obyoneobyone Posts: 8,054
    When was the last time you serviced the transmission?
  • rhlippincottrhlippincott Posts: 1
    edited August 2013
    i recently found a vacuum line coming off the top of my transmission with about 2 feet of vacuum hose but it isn't connected to anything don't see where it could possibly connect to does anyone have any idea,hesitates when shifting then jerks into gear.
  • aygee99aygee99 Posts: 1
    I have a 99 GMC Sierra.. when I stand outside the truck and turn the key to start it, it feels like the truck jumps forward. It doesn't move because it's in park but i am curious if this would be a transmission issue or something else??? Thanks in advance for any help with this...
  • wbeanwbean Posts: 1
    I have a 2000 Sierra 1500, with 5.3 V8 and 4wd. The transmission is stuck in the tow/haul mode. It doesn't reset, after turning off, and the fluid is at proper level. And yes, I have tried the selector button. All shifting is normal, just can't get back to overdrive mode. Anyone got any ideas?
  • A wise relative once told me; "When you have a major component of the vehicle fails, get rid of it" The point is the dealer cannot restore an engine or transmission to the condition it came out of the factory. I've learned this is true. 99% of mechanics don't have he expertise to properly repair a major engine or transmission issue. Save yourself some money and heartache and trade it.
  • chuck1chuck1 Posts: 1,405
    He would be OK if he got a rebuilt from the factory and had it dealer installed. Of course, this is the most expensive option.

    Some would disagree with your opinion, some feel it's cheaper to replace a part in a vehicle than to buy a new one. This would hold true to a certain point.
  • Agree, I'm looking at it more from a reliability standpoint but with the 100K power train warranty it's cheaper to keep it.
  • hello, Im trying to help a buddy of mine with his 01 chevy silverado. recently he had his alternator go out, then all of sudden the transmisson wouldnt go in gear! no problems prior to this at all, i asked if there were any symptons of the transmisson having issues prior to this and he said that it was perfect.. now he says it will go in first and second to the best of his knowledge then start slipping out of gear.. any thoughts, just seems odd that the tranny would take a crap at the same exact time.. thx
  • I was wondering if anyone was having a similar issue. I was driving home today and my truck started whining when I gave her some juice. At a stop light I gave her some gas and she did not move. I could hear the transmission spinning just not engaging. After I had cut her off multiple times and ran her through all the gears nothing happened. I was dead in the middle of the road. After about 20 minutes of irritating the drivers behind me I gave her the old college try and she started going again. A few moments later she started reenacting the original problem. This time I was able to coast home. Has this happened to anyone else or does anyone know what could possibly cause this?
  • 2000tahoe442000tahoe44 Posts: 1
    edited December 2013
    I have a 2000 Tahoe and All my interior light Quit Working. I replaced All my Fuse and Bulbs and Nothing worked. I made sure the override button is off as well. I replaced the switch to. Has anyone had this Problem that can Help me Please.
  • chrislee87chrislee87 Posts: 1
    edited September 2015
    What could it be if my 2000 chevy silverado z71 four wheel drive automatic transmission takes a second to shift from park to drive and then jerks and then goes through all the gears until the final gear when you let off the gas for shift it drops rpm all way down when you give it gas it jumps back up to 5000 rpm and jerks and goes back in that same gear
  • bigbubabigbuba Posts: 1
    I do not work for any car company. While I have had some warranty issues, my dealer Dave Cross has been excellent to work with. I have driven city and cross country, mountains, deserts you name it. Some of it pulling a travel trailer. Best truck I have ever owned. Drove Fords and had way way too many warranty battles and left holding the bag on 3 of those. I have a 2013 with the 5.3 and 6L80. 75,000 miles. It is not perfect, but it operates very well and is more comfortable than anything else I have experienced. The trany does push a little and get a yoke clunk once and a while. But it beats multiple calls being broke down with my previous Fords. I still have a 93 F250 on the farm. My 2006 and 2011 Fords had real issues. GM took care of me and Ford just argued and argued. When you have to bring your PC in to show them the Ford TSB's, bad. Same on them. used to be a good car company. Ford gets a "D" on warranty and for my GMC experience a Solid "B", and maybe an "A". Strong motor, excellent trany and good driveability on long trips. And better yet I get where I am going. Thanks Dave Cross and GMC. I got what I thought I paid for. Big Bubba is a reasonably happy camper.
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