20 Most Recent 2003 Chevrolet Avalanche - Page 4 Questions & Answers

its either a short or a bad ground

Sam , vinegar and baking form a type of acid !!!!!!!!!!!!!!!!, ,baking soda by it self will neturalize the vinegar ,I'm not sure why you were doing this, no matter ,disconnect BATTERY, flush with pleanty of cold water and baking soda followed by just cold water, if you have compressed air that will help to dislodge water and hair dryer will help to .good luck. Woody

You can buy replacement clips at NAPA or any parts store close to you. They are cheap and easy to replace.

It could be a couple of things.. First, I would check your refrigerant. Maybe you need a re-charge? Second, There might be an air gap on compressor clutch (should be .013" to .020") that's just too much. Third, possibly a stubborn actuator for your blend door. Fourth, hopefully you've found the problem before you get to this, The control Unit. They have a bad reputation on this year for acting up. Good luck!!

Code p2120 is accelerator pedal position sensor APP sensor 1 circuit apparently this is known as the reduced engine power syndrome and is quite common on the avalanche. There is no mechanical linkage from gas pedal to throttle body and it is quite common for the throttle position sensor located on throttle body to mess up and throw this code and also for one of the wires to the throttle position sensor to get hot become brittle and sometimes break. I would start there

check and/or replace the light module .

the back lights have 2 filaments inside 1 for brake 1 for tail light

It's under the center console main storage. Pull the storage bucket out and it's mounted underneath on the floor (hump) of the truck

http://youtu.be/uOXUIfddHBU

If it's a 2,5L V6 thaen it's 5,5L of oil . Hope this will help you!!

It could be a couple of things but all related to the transmission . The valve body could have contaminates and not allowing the fluid to go where it needs to the solenoid pack could be the problem . Take it to transmission shop and have them put it on a transmission scanner they would be able to tell you more info about the problem . Hope this helps

Here's for the MAF. 5 wire though.

I have the same problem with my left rear door (it also sets off the alarm at times when parked). I take some wd40 and spray it into the inside lock slide and move it back and forth a few times. that seems to fix it.

if no codes ---throttle body dirty--fuel pump problems overheating starting to fail filter clogging---egr valve carboned up ---catalytic converter failing clogging ---needs tune up ---air filter restriction clogged ===if code -check engine light have it read most auto stores do it for free the code will give you your start point towards resolving your problem

You have to test any relay or part to see if it failed You don't replace parts because you have a light on your dash or codes present Most relays should last for 30 years,far longer than the vehicles their in. Have to define pedal relay. Get it into a shop & spend time explaining the issue,let them work on it

No one knows what vehicle repair costs are Only after a shop finds a problem & knows the solution, can you be quoted a price that the merchant wants Buy the part & replace yourself,if it has been properly tested & failed a test,don't throw parts at it