ABS/Traction control light

A scanner that is capable of reading the wheel speed input will. It will show what the computerfor that system is being told by the speed sensor.

Scan your codes, off and down on your mode button with the key in the on position, get a peice of paper to write them down, look in the message center for the codes, like Service Writer says it might be the VSS or a wheel sensor

Scan your codes like I asked to on the last reply, caddies dont need a scan tool, they have self diagnostics. If lights are on you have codes

The base brake system is separate from the anti-lock system. There will be a diagnostic fault code stored in the ABS Computer that will indicate the circuit or system that needs further diagnosis. GM has a lot of trouble with front wheel bearings developing a little normal play, but that is enough to let the wheel speed signals from their already wimpy sensors drop out. You may be able to get an idea by the way the yellow ABS warning light acts. If it turns on right after starting the engine before the car moves, the computer has detected an electrical problem. If the light goes off after it's couple-of-second bulb check, then turns on after the car is moving, sometimes as much as a few miles, it is commonly related to the signal dropping out from a front wheel speed sensor. That is a mechanical problem, not electrical.

Pull your codes, off and down on the mode button or off at the same time, with the key in the on position

it would show U codes if it wasnt responding

Can you take a pictire of your heater controls for me to see

You need to have the computer scanned and tell us the code. Dont be worried your car will always still have conventional brakes. When the light comes on it disables that module completely so it wont do anything funky while your driving it.

Does your cruise control work okay? Might sound odd but on Mercedes MLs, the all these systems run through the brake switch on the brake pedal. That switch was replaced and it cleared the other systems to include allowing the cruise to work.

See pm

Current:

TCS C1287 Steering Sensor Rate Malfunction
TCS C1241 Magna Steer Circuit Malfunction
PCM P0151 Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1
MMM B2144 Left Front Mirror Vertical Position Sensor Circuit Low
MMM B2146 Left Front Mirror Horizontal Position Sensor Circuit Low
MMM B2148 Right Front Mirror Vertical Position Sensor Circuit Low
MMM B2150 Right Front Mirror Horizontal Position Sensor Circuit Low

History:

IPC B1911 Generator L-Terminal Problem
TCS C1277 Requested Torque Signal CKT Malfunction
TCS C1281 Steering Sensor Uncorrelated Malfunction
TCS C1286 Steering Sensor Bias Malfunction[/quote:3f6e813176]

looks like you need a steering wheel position sensor first, an O2 sensor, the one on the frt head, its under the water pump, ck your brake fluid, fill it if its low, start there