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transmission

  1. Tranny hits high RMP randomly

    General
    Hello! I'm sorry if this is in the wrong place. I have a 2002 Trailblazer and I've recently started experiencing high revs, 3-4000rpm, intermittently. I was told it might be the tranny filter so I changed that along with all new gaskets and fluids. it now seems to be happening only at low speeds...
  2. Excessive revving?

    General
    Hello! I'm sorry if this is in the wrong place. I have a 2002 Trailblazer and I've recently started experiencing high revs, 3-4000, intermittently. I was told it might be the tranny filter so I changed that along with all new gaskets and fluids. it now seems to be happening only at low speeds...
  3. Gremlins in my trailblazer

    OEM Issues
    HELP so I started out with my check engine light coming on got code p0121. Then started having trouble starting truck every other time the battery gage would go up and down a little and the icon for security was partially lite. Then truck wouldn’t start just click click click. So disconnected...
  4. Transmission stalling/grinding noise

    OEM Issues
    I've noticed a very damaging like-sound come from my truck recently, it sounds terrible! I have the 4l60e, it sounds as if the transmission is just grinding on the gear to shift, it'll make a terrible grinding noise when trying to shift from 1st to 2nd and then 2nd to 3rd. I dont know what it...
  5. 2004 Envoy won't move in any gear

    02-09 Vortec 4.2L I-6 Engine and Drivetrain
    I have a 2004 GMC envoy XLT 4 x 4. It started with the shift linkage started to fall off so I could crawl into there and hook it back up and was good to go. Then they started when I was in reverse it wouldn't go so I'd give it more gas and it act like it was binding up as if it was in 4-wheel...
  6. Hoping someone can help me with these transmission issues.

    OEM Issues
    Evening all, I am in hopes that someone can help me, Over the past month I have completely replaced the transmission in my fiance's 04 Trailblazer ext. Her old one was not moving in any gear and we were able to get a used one out of a donor vehicle pretty cheap ($150). When I finally got it all...
  7. Pulling Trans, how to remove crossmember?

    OEM Issues
    Pulling my trans on my 03 trailblazer 4x4. I can’t get the cross member out, on the passenger side, by the fuel tank there is a black box that keeps me from removing one of the through bolts on the crossmember. The bolt is too long to pull out with that black box in the way. I can’t figure out...
  8. Transmission won’t shift past 2nd

    Transmission Mods
    I will give as much information as possible. I parked my car after driving to wallyworld I had absolutely no problems. I get up in the morning drive for coffee shift to second that’s it. I had no slippage the day before. It’s like limp mode without any idiot lights. I’m in NC just came back from...
  9. Bad transmission, manual swap?

    General
    This is the day i've regretted for a long time. It seems that my transmission is toast, and for a car with just over 135k, I am pretty disappointed. But, this may be an opportunity! I drive a 2003 TrailBlazer LTZ, 4.2l, 4x4. I've done some looking, and it appears that the engines in the...
  10. Bell Housing Knocking

    OEM Issues
    Hi all! Lately I've been having a fairly new set of issues. And I am not sure if they're connected but I'm assuming they are. I've recently been hearing a knock that raises in frequency and slightly in volume along with RPM's. Fairly certain I've isolated the noise at the bell housing. I checked...
  11. TB trans interchanges

    Transmission Mods
    Hello All. I just joined a few weeks ago. My first TB has low mileage, is rust free (for NE Pa), and has - you guessed it, a dead 4L60E. No 3-4 gear. So some quick first questions about used transmissions: - what other year 4L60E's will bolt / connect up to my 2002? - is it a good choice to...
  12. Transmission shifting hard all of a sudden

    OEM Issues
    Hey guys, was camping over 4th of July weekend. 2003 Trailblazer LTZ 4.2l 4x4 On the way back into town, only about 20 miles from home, I noticed that while in overdrive, my RPM kept bouncing between 2000-2200 while cruising at 55. So I kicked it into third and it was fine. Then, coming back...
  13. 02 Trailblazer Transmission Problem

    OEM Issues
    Hello again everyone, Current issue: I have an 02 Trailblazer with about 240k miles that no longer shifts into any gear. I was driving along one moment, and the next moment, I completely lost power, rolled to a stop, and had to get towed home. Park works, nothing else. There is now also an...
  14. No reverse or 1st & 2nd

    General
    First let me ask the question, Is there any other reason for no reverse other than a broken sunshell gear? History: 04 envoy 170k miles rebuilt motor unknown miles since rebuild. Tranny went out this fall (drive band) bought a used lower mileage trans at a reasonable price. put it in and in true...
  15. 2003 4.2l 4x4 automatic shifter moves gear doesnt

    OEM Issues
    Drove perfect until I parked yesterday. This morning the shifter will move but it feels like an elastic is pulling it back towards park (easy until about D). Gear indicator doesn't show any movement off park and the tranny never engages. No codes using a CANODB2 reader. I'm thinking maybe a...
  16. Shifting Issue

    OEM Issues
    I have a 2005 Trailblazer LS 4.2L motor. I was having any issue with shifting out of 2nd gear so the truck would not get above 40MPH, it was just rev up when it was time to change to 3rd gear. The check engine light was on so I pulled the codes and it came back that I needed a speed sensor. I...
  17. Love my Rainier!

    Introductions
    Hi All: Just saying 'hello', first time post! I bought a used Rainier about 10 years ago and am still trying to have it on the road! I love the way it rides! 195K miles now, swapped out the front differential and the transfer case motor were the big things. Also put in standard springs and...
  18. Shifts late from 1st to 2nd gear

    Transmission Mods
    Especially when cold, whenever my truck shifts from first to second, it needs to be above 3k rpm, which occasionally causes a hard shift. Whenever I drive I need to let of the gas and make it shift myself. My first thought was vaccuum leak or solenoids, but does anyone have any other ideas for...
  19. Transmission problem or just not engaged properly?

    OEM Issues
    Anyone had their TB start making a grinding noise in 1st gear when shifting into drive from reverse.?.??? Then it disappears after second gear engages?
  20. Transmission Problems (TCC, Shifting)

    OEM Issues
    Hi All, For my first post here, I'd like to get some input on what I might be dealing with. I got my 08 Trailblazer LT (4.2) about a year ago, and ever since I've been dealing with the TCC intermittently locking/unlocking over and over, along with some other shifting issues. The TCC...
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