2008 Suburban

M

MHarrell

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i have started having issues with my burb, ABS, brake trac light comes on and the speed odometer starts bouncing around, it is a intermittin problem, going over rough railroad tracks does not make it come on or go off, it has me puzzled.
 
The ABS/Traction control is usually a wheel sensor or the wire harness.
The speedometer would be the VSS, vehicle speed sensor, and again is the sensor starting to go or the wire harness.
 
zora said:
The ABS/Traction control is usually a wheel sensor or the wire harness.
The speedometer would be the VSS, vehicle speed sensor, and again is the sensor starting to go or the wire harness.
Click to expand...
also, i forgot that when the lights come on, it shifts hard, like you have a shift kit in it. speed odometer does not act crazy until the abs brake and trac light come on.
 
The transmission uses the speed sensor to control shifting. You need to have it diagnosed by a repair shop unless you have advanced scan tools.
 
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