A SERVICE TRACTION SYSTEM WARNING MESSAGE CAME ON.DURING START UP,ONLY WHEN THE on 2002 Chevrolet Monte Carlo

ENGINE IS COLD,THERE IS A BRIEF RATTLING AND THEN IT STOPS AFTER ABOUT 15 SECONDS.THE CAR IS NOW EXPERIENCING SHIFTING PROBLEMS..IS THIS A SPEED SENSOR PROBLEM..I'VE HEARD THE HARNES WIRES SOME ]TTIMES RUB AGAINST TIE RODS.

by in Montgomery Village, MD on July 13, 2012
2 answers 6 comments
ANSWER by on July 13, 2012
Check All fluids esp. engine oil.You didn't say how many miles on car.Rattle on cold start sounds like bearing trouble.
COMMENT by on December 14, 2012
what does engine oil have to do with traction control light?
COMMENT by on December 14, 2012
Must have responded to the wrong question FIVE MONTHS AGO!! But after reading, engine rattle on cold start well maybe it does apply after all! Wow.
COMMENT by on December 15, 2012
didn't mean to sound smart ---! I'm old school and figured anything possible with computer cars. just found this site and have a similar problem. not a warning message, but every few months the traction light comes on momentarily, with an odd (wrrrrr) sound while slowly leaving the driveway. the rt front bearing and hub were replaced in the past. could the sensor in it have anything to do with this if it goes bad? '03 SS 70,000 MLS.
COMMENT by on December 15, 2012
It all good! The problem with your car is most likely an ABS wheel speed sensor,when the Antilock Brake System fails so does the Trac. control. Scanner will reveal which sensor is at falt. Merry Xmas!
COMMENT by on December 15, 2012
Thanks. Merry Christmas to you as well
ANSWER by on February 21, 2013
my car doing the same thing why is that??
COMMENT by on February 21, 2013
I still don't know. happened the other day. don't think a "warning" but it says "traction control active" I think. happens so fast and so rare I can't remember!!!