ABS code c0040 and c0041,right wheel speed control sensor and right wheel speed control circuit

SOURCE: 2002 2WD CHEVY TAHOE ABS

Its possible that right wheel speed sensor is dropping out early making the truck think that wheel is locking up. That will activate the ABS and let the brake go on the right wheel which will make the vehicle pull slightly left. The only way to know for sure is to watch the wheel speeds on a scanner and see which one is drpping out first and replacing that speed sensor/bearing assembly.

good Luck

SOURCE: obd 2 connector does not work with any code scanner

HI there....Check to see if the code reader is a CAN OBD 2 code reader. If it is only OBD2 , that may be the problem. In 2003 Some vehicle manufacturers ( ford,Gm,Mazda and Saab) began using a new computer protocol called Controller Area Network (CAN) with the OBD2 and if your vehicle is CAN OBD 2 the simple OBD2 code reader will not work.Contact your local dealer to determine if you vehicle is CAN or not or find a code reader that is CAN OBD2 capable. Hope this helps you out

SOURCE: trying to locate MAF sensor

Look near your A/C system and under the overflow hose for the coolant. It is a round can looking thing with a small wiring harness attached on top. There rae 3 hex screws holding it on to the bracket. Remove these and slip it off of the air intake tube. Use a small screwdriver to depress the small latch on the inside of the harness and gently pull it off. Disassemble the MAF sensor from the mounting plate, remove it from the vehicle and spray the wires with carburetor cleaner several times. That should clean it up for you. Good luck and let me know if you need more info.

SOURCE: 2003 silverado 39,ooo miles. due

make sure all tires are same size and inflated to correct pressure

Ned C Cook

• 3433 Answers
• Posted on May 06, 2009

SOURCE: looking for color code (diagram) - 7 wire trailer harness/wiring

If you haven't purchased the plugs yet. The wire color codes should be included in the package.

• If you are using used plugs ck the back of the plugs for color or function of wire
• Wht - ground
• red - stop
• blue - accessory/aux
• brown - tail
• black - Marker
• grn - left turn
• yellow - right turn