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Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1522
Experience:  ASE Master Certification. GM World Class Certification
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Cadillac CTS: 2009 CTS RWD - traction conrol light comes on/flashes

Customer Question

2009 CTS RWD - traction conrol light comes on/flashes when driving. I have a scan tool while driving, when I'm viewing through ABS system, all 4 wheels match speed. When I view thru VSES system and drive, F/L wheel speed is zero - sometimes a speed may pop up. Both system utulizes the wheel speed sensor, right?
Submitted: 1 year ago.
Category: Cadillac
Expert:  FIXITMAN replied 1 year ago.
Hello, my name Bobby. Thanks for the question. If I am not online when you return please give me some time to get back to you. Can you tell me if the car is stock? Does it seem to come on more when driving straight, braking, or turning?
Customer: replied 1 year ago.

yes, it's stock. It looked like she hit a curb but no markings were found on rim or tire. The frnt driver wheel was toed in. The VSES error message was on when she dropped off. Driving with a scan tool showed abs speed asensor as 0 mph while the other three ok. I straightened out wheel by doing a toe-adjustement, steerign angle is o on the nose when driving and replaced abs speed sensor. test drove and all 4 wheels are matching up in speed but now traction light comes more when i accelerate or increasing speed. When light comes on, the abs is applying the rear brakes

Expert:  FIXITMAN replied 1 year ago.
What is the yaw rate sensor reading when this occurs?