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Old 08-28-2007, 04:36 PM
Axleman Axleman is offline
Hummer Veteran
 
Join Date: Jan 2004
Location: Nashville, TN
Posts: 76
Axleman is off the scale
Default Re: need help abs and tt4 lights stay on

The first place to look is at the wheel speed sensors. They are located on the hubs and should be near the tone ring on the halfshaft (the silver gear looking thingy.) If the sensor has moved away from the tone ring, it cannot generate a signal for the ABS computer and you get a warning light.

It could also be a broken wire inside one of the harnesses that go to each sensor.

If it isn't one of these, then be ready for $$.
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Scot Smith
1994 HMC4, Locked
Steering & Axle Express
Steering, Driveline & other Hummer Stuff
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