2006 envoy stabiltrack - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 06-07-2019, 10:34 PM
Jdiggitydogg1 Jdiggitydogg1 is offline
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2006 envoy stabiltrack

I have an 06 envoy and I randomly would get traction control light and then go off and not stay on . Then brakes would act like antilock was kicking in but again no abs light or stabiltrack light . So I’ve changed 3 sensors on transfer case and and right front wheel sensor . Still did it but not as much . Changed left front sensor now got stabiltrack and abs lights on and coo35 code . Any suggestions?
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  #2  
Old 06-08-2019, 12:03 PM
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EnvoyBoy2004 EnvoyBoy2004 is online now
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C0035 is for Left Front wheel speed sensor. Did you check to make sure the connector was fully seated? Did you check for a build up of rust/corrosion at the mounting point?
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Old 06-08-2019, 01:01 PM
mddombrowski mddombrowski is offline
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You can also measure the resistance across the sensor. Spec is 700 to 10k ohms, and >100 mV AC when wheel is turned by hand. Assuming the new sensor is good... yes the connector and wiring would be suspect if recently changed.

I keep running into these scenarios this month. A scope would be handy here to observe the frequency waveform from the wheel speed sensor and see if it breaks down.


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  #4  
Old 06-09-2019, 02:08 PM
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A resistance measurement will not tell you if the sensor is working correctly, only if it is open. An AC voltage measurement either with a DVM or scope will verifiy if a sufficient level is present. It takes only a very small deviation in the distance the sensor is away from the reluctor wheel to affect the AC voltage level.
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Old 06-10-2019, 08:42 AM
Jdiggitydogg1 Jdiggitydogg1 is offline
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Thanks for the replies . So took out the new left front wheel sensor I put in and it must have been a touch longer because it must of ground into the bearing . I put the old sensor back in and lights are still on, so I would imagine it messed up the ring in the wheel bearing and I should replace wheel bearing? Thanks
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Old 06-10-2019, 09:02 AM
mddombrowski mddombrowski is offline
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Again... are you getting the correct voltage output from this new-used sensor on a meter or scope? Is the sensor within spec for resistance... as EnvoyBoy2004 correctly stated, this proves the sensor is not open.

Front bearings are not serviceable; only available as a front hub assembly unless you want to go full-gorilla on it.
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Old 06-12-2019, 07:33 PM
07 Black Envoy 07 Black Envoy is offline
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Rust has probably hijacked the mounting surface.
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Old 06-12-2019, 11:25 PM
mawhitealton mawhitealton is offline
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Just like 07 Black Envoy said, rust on mounting surface. Read this thread last year when having same problems and same code on '09 Envoy. Replaced sensor and got worse. ABS kept locking up brakes at low speed. Tried sanding surface and cleaning as best as I could but still had same problem. Finally just changed hub bearing (2nd one) and problems went away. Parts were bought from rock auto, maybe cuz I went cheap and didn't go with OEM (more expensive).
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