Question about 2003 Chevrolet TrailBlazer

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2003 trailblazer will not go to 2wd

I can not get it back to 2WD it flashes and stays light at 4HI

Posted by on

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If you go to You Tube Video & watch Wayne at
Real Fixes Real Fast--- he will show you the problem,
& how to replace the Transfer Encoder Motor

Posted on Apr 01, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 90 Answers

SOURCE: My 98 chevy blazer won't shift into 4wd.

Most common problem is the vacuum diaphragm that is so inconviently mounted UNDER the battery tray.The cable that locks in the front diff is attached to it and vacuum pulls it in/out.

Posted on Dec 23, 2008

MrScary66613
  • 1990 Answers

SOURCE: 2002 Chevy Silverado clunking noice when shift from 2wd to 4hi

It is somewhat Normal Depending on how Loud the Clunking is. This is a Common Complaint on the Chevy 4x4's. I have verified this through the Dealerships here in Oklahoma and they all say the Same thing But, I am with you, They should go into 4x4 without that Clunk for as much as we pay for them.

Posted on Jan 26, 2009

  • 1 Answer

SOURCE: 2002 Chevy Trailblazer's 4x4 control

I have a 2002 chevy trailblazer 4x4 control light not working. when trying to switch from 2wd to 4wd nothing happens. no ligth no engaging of the drive

Posted on Jan 28, 2009

SOURCE: 98 Chevy S10 4wd drive will not engage when button is pushed

your problem sounds like either the transfer case control module located where you hear the clicking sound, or the actuator on the transfer case itself.

try unplugging the transfer case control module and then plug it back in, try engaging 4wd again (make sure your in neutral, coasting at 1-2 mph might help as well) if it still doesn't work check the actuator itself to see if the actuator is trying to engage. if the actuator is trying to engage but doesn't, take the actuator out and check it for wear or damage. if the actuator seems fine and it responds to the buttons when pressed i'd go after the transfer case control module as the culprit. ran into that a few times on those s-10's. 3 out of 4 that i've seen were fixed with a new tccm. 1 of the 4 needed an actuator, check your local junk yard for a working tccm or actuator.

hope this helps!

Posted on Feb 17, 2009

  • 1 Answer

SOURCE: 4hi is not working

try seeing if the cable going to the front differental is pulling in to engage the front axle?

Posted on Apr 25, 2009

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GM has had more that their fair share of transfer case problems. I have also seen may problems caused by addition of aftermarket equipment - especially remote starters. There is a good chance that you have a damaged transfer case, but if an electrical problem was the root cause of the damage, you will only destroy a new transfer case if the electrical problem is not resolved. If the mechanic that you are going to does not have the proper equipment and/or information to diagnose your transfer case control circuits, you should consider getting a second opinion from the dealer before buying a new transfer case. I currently work in an aftermarket shop. There are several of the GM 4 wheel drive systems where the manufacturer has not released the information necessary for an aftermarket shop to properly diagnose and repair the system. Some mechanics are simply to proud to say "I can't" or "I don't know".

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try seeing if the cable going to the front differental is pulling in to engage the front axle?

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Dec 31, 2008 | 2001 Chevrolet Blazer

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