- #3 of 74
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Re: Aztek Traction Control & Antilocks [speed_racer5]
by greighn
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May 18, 2007 (3:46 am)
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Replying to: speed_racer5 (May 17, 2007 8:53 pm)
The problem always seems to tbe the wheel sensors, at least that's what they tell me the computer error code shows. Have them hook your car up to the computer and read the error codes from the ABS/tracion control system. It should indicate an error in one or more of the wheel sensors.
However, the wheel sensors are not cheap as they are built into the wheel hub and you have to have that whole assembly replaced for several hundered dollars. My problem seems to be the sensors keep going bad. I don't know whether it is a quality control problem of the replacement parts or some other malfunction in the system.
Good luck with yours.
Gary.
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- #4 of 74
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Re: Aztek Traction Control & Antilocks [greighn]
by ray80
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May 18, 2007 (4:01 am)
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Replying to: greighn (May 18, 2007 3:46 am)
I think I would be getting the connectors checked for corrosion, its not always the sensors themselves
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- #5 of 74
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Re: Aztek Traction Control & Antilocks [ray80]
by greighn
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May 18, 2007 (4:55 am)
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Replying to: ray80 (May 18, 2007 4:01 am)
Thanks. I will suggest that to the mechanic next time it happens.
Gary.
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- #6 of 74
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Re: Aztek Traction Control & Antilocks [greighn]
by littlemsrodeo
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May 25, 2007 (7:23 pm)
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Replying to: greighn (Apr 29, 2007 4:48 am)
2003 Aztek, bought it brand new in '03. We have had the same problem...dealing with it right now!
Started with noise and felt like vehicle wasn't going to stop...kind of like the brakes were pulsating. Then ABS light came on. Replaced the LR hub since computer stated it was the LR speed sensor. Worked for about 2 hours and problem is back...no light yet though. Taking back to shop so they can search for a wiring problem, or maybe a bad part...but have already spent $375.00 on the hub replacement. And just fixed coolant leak 2 days prior was another $605.00...we have spent thousands on repairing this car over the time we have had it.
We have had so many problems (I posted all of them on a another post) but we have already replaced both the front hubs/bearings twice also!
So, not sure what we will do or if we will be able to fix this problem...but if you find out anything different please post it...
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- #7 of 74
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Re: Aztek Traction Control & Antilocks [littlemsrodeo]
by greighn
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May 26, 2007 (5:18 am)
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Replying to: littlemsrodeo (May 25, 2007 7:23 pm)
Sounds very similar to our scenaro - replace wheel sensor - a couple of days later ABS start coming on when they shouldn't along with traction control - then total system failure with ABS and Traction Control warning lights going on.
We had the part replaced twice and it just started up again the other day. I can't believe the parts are that bad! (then again it is a GM!) I suspect there must be another problem. I plan to take it back in a another week or two when the system fails totally and have them do more diagnostics.
Do you know if it is possible to just disable the ABS system and convert the car to normal braking? What would happen if you took the ABS fuse out? I'm seriously considering that if they can't find and fix this problem. I really don't want to sink any more money into this vehicle.
-Gary.
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- #8 of 74
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Re: Aztek Traction Control & Antilocks [greighn]
by speed_racer5
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Jun 01, 2007 (8:41 pm)
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Replying to: greighn (May 26, 2007 5:18 am)
Well, don’t bother I already did that (take the ABS fuse out), but the ABS warning bell is always on with some other warning lights so that is a good thought but not a good idea. The dealer has replaced both left and right front hubs but problem continued after two days. When I took the car back to the dealer and keep the car for three days same thing, the problem returned next day so I went back to the dealer, finally he said that this is “normal” that I should drive the car like it is. Not necessary to say what I thought about this guy. I took the ‘Tek to a “regular” shop and they found that the highly trained technician at the Pontiac dealer damaged the piece where the RF hub is mounted so I needed to replace that piece and the RF hub. In my case the scanner always reports the error in the left front hub sensor, so we replaced it again and guess what… The problem still there. (fk me !!!).The ‘Tek is at the shop, they will replace the LF hub again!. I know Pontiac does not make the best parts but I don’t think they are that bad…so, obviously the hubs sensors are not failing even though the scanner is reporting that error. The mechanic has machined front rotors, changed pads, checked voltage in both front speed sensors, aligned and balanced 4 wells, checked pressure in EBCM. Checked wires and connections for corrosion. Now every thing is pointing to the EBCM. I’ll let you all know.
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- #9 of 74
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Re: Aztek Traction Control & Antilocks [speed_racer5]
by littlemsrodeo
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Jun 02, 2007 (4:31 am)
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Replying to: speed_racer5 (Jun 01, 2007 8:41 pm)
Keep us posted, please! Still can't find problem in our Tek either...highly frustrated at this point!!! Nothing seems to fix it for more than a day...Haven't cheked the EBCM...What exactly is the EBCM?
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- #10 of 74
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Re: Aztek Traction Control & Antilocks [littlemsrodeo]
by ray80
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Jun 02, 2007 (4:57 am)
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Replying to: littlemsrodeo (Jun 02, 2007 4:31 am)
I thought of something else to check for that may not be obvious. The is a wiring under the drivers seat that goes through the floor just behind the seat, the harness (underneath) can get corroded do to water intrusion and cause various different problems (and does have wiring for brake sensors I believe). Might be worth a lot anyway
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- #11 of 74
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Re: Aztek Traction Control & Antilocks [littlemsrodeo]
by speed_racer5
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Jun 02, 2007 (6:11 pm)
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Replying to: littlemsrodeo (Jun 02, 2007 4:31 am)
EBCM stands for "Electronic Brake/Traction Control Module", The EBCM monitors and compares wheel speeds to decide when wheel slip is excessive and/or the vehicle is becoming unstable. If the vehicle is braking, wheel slip will trigger ABS braking. If the vehicle is accelerating, wheel slip will trigger traction control. And if the vehicle is cornering or making a sudden steering maneuver, undesirable changes in the yaw rate will trigger corrective braking to restore handling control.
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- #12 of 74
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Re: Aztek Traction Control & Antilocks [speed_racer5]
by ray80
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Jun 05, 2007 (2:48 am)
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Replying to: speed_racer5 (Jun 02, 2007 6:11 pm)
I have been perusing the Rendezvous forums as well as the Aztek forums and someone there with ABS TRAC lights got theirs fixed after finding problem with EBCM wiring harness (NOT the ECBM itself)
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