Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Trans slipping out of overdrive & 4WD stuck: 1 issue or 2? Help.

    4x4 Drivetrain
    This is a bit convoluted, so I'm going to try to explain this mess with bullet points: * First issue was car would not switch back into 2WD from 4WD high. If I turned switch, all the lights would flash quite a few times, then it would go back to 4WD high and stay there. Car was...
  2. transfer case???

    4x4 Drivetrain
    I'm in the process of doing a 4.2 to a 5.3 swap in my trailblazer. I have the engine out of a GM pickup truck and a rebuilt 4l60e transmission. Now I have the transfer case that was with my 4.2 with a 4l60e transmission, would that transfer case work with this engine and transmission? :confused...
  3. 2007 Chevy Trailblazer ls with 4x4 issue

    4x4 Drivetrain
    Hi, I'm new to this forum but have used it for many fixes for my TB so maybe you guys can help with this.(sorry if I am doing this wrong) I have a 2007 Trailblazer LS with 4.2L and 133,500 miles, When the truck is in 4x4 and driving down the road it will occasionally "bang", you can feel it...
  4. New Transmission but NO GEARS

    4x4 Drivetrain
    I have an '03 Trailblazer EXT 4x4 with ~85,000k. Just replaced the transmission with a used unit. Replaced all tranny and transfer case fluids to proper levels, including fluid in the torque converter. With the help of two Master Mechanics, I finished up the job late last night. Started the...
  5. Wrong fluid in TC

    4x4 Drivetrain
    Hi May wrong fluid in TC be the cause of whining sound??. I have not been able to check the fluid since i bought my TB because of the cold weather and not having access to a garage. The TC is supposed to be changed about 12,000km before i got it and im not sure if the right fluid is in there...
  6. Transfercase/transmission acting up?!?

    4x4 Drivetrain
    Hey everyone, I am new to the site, but it looks to be very helpful with everyones combined knowledge. My wife and I just bought a used '04 trailblazer with about 50k miles on it. So far we love it! However lately we did have to take it in to get serviced because the thermostat housing was...
  7. 04 Bravada Shakes/ vibrates every now and then

    4x4 Drivetrain
    04 Bravada Shakes/ vibrates every now and then...... It happens every now and then, I throw it in neautral give it a lil rev, and then the shake goes away.....I'm 100% that its drivetrain, I'm no newb, this is my 32nd car, I buy em break em and build I know its not an out of balance...