My service traction system comes on my impala 05 waht to do
Have someone scan the computer for trouble codes. The trouble codes will point you in the direction of the problem and what to test.
SOURCE: Service Traction System Light on 2003 Chev Impala
on the rotors you probably noticed two lines one for the brakes and the other is your traction control magnet which picks up a signal to tell the computer to control the braking system when the wheel locks up in hard braking, you either damaged the magnet or it picked up some metal shaving while replacing the brake pads
SOURCE: Service traction system and ABS light
verify all tire pressures are correct this can affect abs traction control on your vehicle
SOURCE: Impala - trac off and ABS light along with service traction syst
THE PROBLEM IS WITH A HUB WHEEL SPEED SENSOR OR MORE LIKELY THE HARNESS LEADING TO THE HUB.
CHECK THE RESISTANCE AT THE HUB CONNECTION, IT SHOULD BE BETWEEN 900OHMS AND 1300OHMS. THEN SWITCH TO A-C VOLTAGE, IT SHOULD BE 100MV WHEN TURNING THE WHEEL BY HAND. IF BOTH CHECK OUT THE PROBLEM IS IN THE WIRING TO THE HUB.
THE RIGHT FRONT HUB USUALLY HAS A BEND, DOWNWARD THEN UPWARD NEAR THE CONNECTOR TO THE HUB. THAT IS WHERE THE PROBLEM USUALLY OCCURS.
NEW HARNESS WIRES CAN BE BOUGHT AT THE DEALER.
SOURCE: Service traction system
Hi mzcongeniali, I have a 2001 Montana that had this same problem just a few months ago.Most likely the problem is that one of the traction sensors has gone bad. The sensor is part of the wheel bearing and you will have to replace the whole wheel bearing in order to replace the sensor. They are found on the front wheel bearings on both sides. You might have only one that is bad or both could be bad. If you want you could get a used one from a auto salvage yard or buy one brand new. If you have an all wheel drive then you will want to check all four wheel bearings to find the bad one. I hope this helps.
raina1100
SOURCE: The "engine power is reduced" light comes on
po455 is Probable Cause[s]
1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.
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