What does it mean when Anti-lock brake light, trac off light, Service Vehicle soon come on when driving? After the low tracg light comes on.
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2000 Oldsmobile Alero
Question: Anti-lock brake light, trac off light, Service Vehicle soon
Answer #1Russ April 24, 2009, 09:24Master
There is an intermittent fault with your anti-lock brake system. For some strange reason GM thinks they need to turn on three warning lights. I would suspect the fault is with one of the wheel speed sensors. There should be fault codes stored in the ABS module which can help the service technicians isolate the cause of your ABS fault.
ReplyCharcocoa, April 26, 2009, 11:07Rookie
Thank you, this is exactly what I was told at another shop after the original shop that fixed it stated it was electrical. At last it was fixed Saturday
ReplyVisitor, June 08, 2011, 06:11
I just don't what warning light come on. I had Service Vehicl Soon light on and off often. I just pay no attention to it. don't waste money to fix. if your car still run well just ignore it. you know electronics sensor can go crazy all the times with false warning. Only when your stop running then go to mechanic guy to fix it. that's all.
BeenThereDoneThat September 09, 2009, 06:54Enthusiast
DON'T CHANGE THE WHEEL SPEED SENSOR! The dealer charges $150 with tax for that part, and that's probably not the problem!
I had the exact same issue. Those 3 lights would come on either when I moved the car, or turned the wheel to the right. The Chevrolet mechanic next door checked the computer and it gave a fault code for the Left Wheel Speed Sensor. I changed the expensive part and the problem still existed.
After researching this online, I found that there were a lot of similar problems, but the fix was to replace the wiring harness for the sensor, not the sensor itself. When I inspected my harness, I immediatley found 1 of the 2 wires nearly broken in half. My break was right at the connector to the sensor, so I couldn't simply repair the wire. I had to replace the harness. It was VERY easy (20 minutes max). The dealer stocks this harness ($110 with tax). I got it aftermarket online for $40 with the clips and butt connectors. Be sure to tape up the repair sight very tight to keep the moisture out of the harness. I had ramps to drive up onto so the work could be done from underneath the car. Otherwise, you will probably have to take the wheel off to get to the harness.
Feel free to e-mail me if you have any questions: firstname.lastname@example.org
Replyblacknasty0069, September 29, 2010, 07:34Rookie
do you remember where you got the harness?? Ive been having the same problem and i was just about to replace the bcm..luckly i found this site and so thank you very much..the only problem is i don't know which harness to replace..should i just replace them all?
ReplyVisitor, June 08, 2011, 06:07
waste your money. I just don't what warning light come on. I had Service Vehicl Soon light on and off often. I just pay no attention to it. don't waste money to fix. if your car still run well just ignore it. you know electronics sensor can go crazy all the times with false warning. Only when your stop running then go to mechanic guy to fix it. that's all.
Answer #3Visitor, December 23, 2010, 21:03
what to do to fix my problem
ReplyAlero 2001, February 05, 2013, 19:03Rookie
I had the same symptoms with my 2001 Alero, and went to a reliable shop and they told me that both of my front ABS sensors were sending back faults because both sets of wires were broken. for the driver's side it was possible to fix it by repairing the wire. On the passenger side next week I will go back to get the wiring harness and wire all the way back to the Module replaced. Total Cost-including diagnosis, repair of one side, and replacement of other side (150.00 CAN), so yes beware when you are told that it is the sensors or for that matter the Module. It could be something less major. The only codes coming back were related to the ABS in my case, so yes it can be that the "Service Engine Light" is on with no problem with the engine. Good luck, keep your car looking good!