I have a 02 grand prix the abs light and trac off light came on and when i push my brakes half way down it makes a grinding noise got codes c0040 and c0245 from auto zone what is the problem please help i work out of town and have to go down a mountain to get home need to know what the problem is thanks to anyone that can help

SOURCE: abs light and trac off light on

hey, ihad this problem with abx and trac off light on all the time even after having replaced the wheel bearing twiice. how i fixed it was to replace the wiring harness and poof issue resolved. a technical service bulletin is available for this issue

SOURCE: I have a 2003 Pontiac

Hi,

The trouble codes are for the left front and right front wheel speed sensors. You should open your hood and in front of the engine on the drivers side under the air filter box you will see a silver tube shape object which is the air condition dryer. Look for your main wiring harness that pass near it. The harness can rub on the dryer and cause many different electrical problems including abs problems. If you see the harness rubbing on the dryer you can move the main wiring harness with your hand to see if there are any cut wires. If they are then you will need to repair the wires that are damage and reposition the harness to it will not rub anymore. This is a common problem with the pontiac grand prix.

Good Luck!!

Thanks!!