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Thread: 04 TB AWD/4WD

  1. #1

    Default 04 TB AWD/4WD

    New 04 TB owner. It did not come with an owners manual and I cant find much info on the web. There is a selector for 2wd, awd, 4HI and 4 LO.
    What is the difference between AWD and 4HI ?

  2. #2

    Default RE: 04 TB AWD/4WD

    Good question.

    I wish I could help you, the only thing I can tell you is AWD is like 4 WD but I believe usable at all speeds and has more computer control over it, I think.

    A buddy has AWD in his Van and likes it better than 4 WD. Better handling, at least that's what he said.

    I'm sure others with more knowledge about the different systems will chime in.

    Technology is great, when it Works,
    And one Big Pain in the Ass When it Doesn’t.
    Detroit Iron Rules, All the Rest are Just Toys.
    94 GMC Burban, 5.7L (350), 4X4, Auto
    86 GMC Burban, 350, 2 WD, Auto
    79 GMC pickup plow truck, 400, Full time 4X4, Auto
    86 Pontiac Fiero SE, 2.8L, Auto, only mid engine American car
    See a Pattern yet?

    15 year GM assembly line worker.

  3. #3

    Default

    When in AWD, the transfer case acts similar to a limited slip differential. It is not completely locked up so you can make turns without chirping the tires and creates less wear on the drivetrain. When in 4WD, it locks the front with the rear so that the front tires turn at the exact same speed as the rear. 4WD should only be used off road or on ice/snow.
    Gary

    99 K 1500 Suburban
    78 Silverado Big 10 w/factory 454
    00 S-10 Blazer
    1976 Trans Am
    1980 Honda CB900 Custom

  4. #4

    Default

    I'd like to get a new TB or Envoy AWD and take it for a spin in the mountains to test it out. I've driving AWD systems, they handle very nicely in ice and extrememly slick conditions, almost like a traction control system.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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