Would like to know how to operate the antilock and AWD for my 2004 Pontiac Aztek Rally. AWD disable light is flashing and my anti-lock light is on and my car seems to slow down at times and wont go over 20mph and then it jerks and go into speed
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Re: anti-lock n AWD
Call the dealership. I seem to remember that Pontiac had a recall for this problem just recently where the antilock brake system would lock op and the system caused people to get into accidents. This is a manufacture defect
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Hi! Matt, Most likely if the anti-lock brake light and the awd disable light come on at the same time a wheel bearing / wheel speed sensor assembly is faulty.Listen for a humming noise when driving and try to determine where it is coming from(left/right/front/ back) or any looseness/play in any wheel. That's the possible bearing/wheel speed sensor causing the problem. Or have the abs system scanned to determine which wheel sensor is reading incorrectly.If the awd disable light is off then the awd system should be funtioning.
I had this happen to my car and paid entirely too much to the dealer to get it fixed. For me, it was the harness that you think it is, and it affected the battery- I needed to replace it- and also the computer. I'm not sure if mine was frayed, but I've heard that this harness has been known to become frayed and shorts out because of that, which is what I imagine causes the failure, and the shorting out is what destroyed my battery and fried my computer.
The AWD Disable and Anti Lock lights can result from a bad wheel bearing as well as a bad speed sensor. They'll also come on if you have the spare tire on. Not sure if the acceleration problem is linked to the warning lights. Most car part stores have scanners they can check out the problem.
AWD disabled from a sensor unit in rear differential that senses high temp. This thing is over $300. Whine is from fluid. Need to change fluid. This versatrack fluid is about $40 per bottle and you need 3 bottles. Thumping noise is from loose rear knuckle bushings. These are part of the entire rear knuckle assy. and you must replace complete knuckle.