[Cliff8928]

Originally Posted by jayson_waltz

^thats if a bearing is bad. a bad sensor won't hum.
sorry alerored, if i wasn't at college and still working at home i'd throw up the list of what everything is supposed to ohm out to form the gm manual. but i'm not.

and redog, it could also be the rear i think since they also throw codes i've seen b4 in the tech 2.

Originally Posted by alerored04

Redog it can be the rear too.

Jayson, do you know where I could look to find that info? That would be a good start for me.

Originally Posted by jayson_waltz

^cliff might have that stuff, he seems to be able to get info from the manuals. it's in the section to diagnose SVS codes i think in volume 2. only place i've seen it is the GM service manuals at work when diagnosing mine. I had it copied off once but i threw it away.

Originally Posted by GM

3 Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

Disconnect the wheel speed sensor connector.

Measure the resistance across the wheel speed sensor.

Does the resistance measure within the specified range?

Front: 1040-1160 ohms

Rear: 1044-1276 ohms

Yes? Go to Step 4

4 Spin the wheel.

Measure the AC voltage across the wheel speed sensor.

Does the AC voltage measure greater than the specified value?

100 mV

That should help...