Question about 2001 Pontiac Aztek

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Abs light is on and want to find out why is this a wheel sencer or could it be the abs pump this also turns off my allwheel drive

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The abs light is tripped by any computer-recognized problem within the abs system. a wheel sensor tends to be the most common cause of an abs light. while the light is on, the standard brakes function normally but the abs system is completely bypassed. the best way to diagnose this is to plug the vehicle into a code scanner. any decent shop can perform this service, or you can purchase a scanner at an auto parts store or online. if you do go that route, ensure that the scanner you purchase specifically can interpret abs codes

Posted on Sep 29, 2009


You almost answered your own question. Get it scanned and repair check light issues first.

Posted on Sep 29, 2009

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The common thing to go on those are the wheel speed sensor! part of the wheel bearing/hub assembly sensor is part of it. only way to be sure is to scan the computer. if not your working in the dark.

good luck

Posted on Sep 29, 2009

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1 Answer

Abs why can't i clear codes what did I miss ?

Start by checking the connectors and replacing the wheel sensor.
It also helps to put model/year in the post, as most people don't want poke around in your profile to see what you drive.

I haven't heard much about ABS unit failures in Mk4 (99.5+) cars. In the Mk3 with the Teves 20 system, it was very common.

Codes about a bad sensor are generally not the sign of a crapping out module. Codes about a bad Pump (v64) is.

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