2009 Chevrolet Avalanche LTZ - Answered Questions & Fixed issues

Did you check the fuses? It could also be a bad connection somewhere in the cab. If you have had anything like extra speakers, sound system or alarm installed, suspect everything the installers came near.

There shoul be a little relay under the blower that can get corroded from condensation check that out , it happened to mine

Remote Control Door Lock Receiver (RCDLR) The remote control door lock receiver (RCDLR) is a multifunction module that operates both the keyless entry system as well as the tire pressure monitoring (TPM) system. When an RF message is received from a keyless entry transmitter, the RCDLR interprets this signal and will request via serial data that the body control module (BCM) perform the specific function, i.e. door lock, door unlock, or vehicle locate. The RCDLR also sends messages out to the 2 Way Advanced Remote Start transmitter. Remote Control Door Lock Receiver (RCDLR) (AP3 or AP8, without E52) Top rear of the passenger compartment above the rear window Remote Control Door Lock Receiver (RCDLR) (AP3 or AP8, with E52) Left rear of the vehicle behind the D-pillar trim panel Body Control Module (BCM) On the lower left side of the I/P to the left of the steering column Good luck !

https://www.modifiedlife.com/2004-chevrolet-avalanche-car-audio-wiring-diagram/

Depending on what you have for diagnostic knowledge and tools. You may want to send it in for diagnostics and repair. I can tell you that your vehicle's BCM (Body Control Module) controls these circuits. If it was a t my shop. I would first look for any fault codes. Then through the scan tool, manually command the doors to lock and unlock. Depending on what I find, take a closer look at the master control switch. This is in the drivers door and opens/closes windows and locks/unlocks doors. I'm forwarding you a couple wiring schematics just in case. I don't want to slow you down. FYI under the hood, inside the power distribution box. There is a relay for the tailgate lock/unlock. Any questions please feel free to write back. Good Luck.

On my 04 Grand caravan,the E G R tube went through a pipe about the size of a quarter to the valve cover.it should have a rubber grommet in it

bad cell inside battery,so it won;t hold the charge,if battery checked OK,it might be a bad bridge (three diode inside alternator,change AC to DC) in your alternator

temp control is the board

Sounds like your "traction control" system is having issues such as a wheel speed sensor. You can have these type things scanned free at your local auto parts store, Auto Zone, Advance Auto Parts etc. etc. They should be able to "steer" you in the right direction. Hope you get the problem at hand resolved, for that is dangerous driving like that. Jesus loves you, John 3:16-17 (KJV)

you found the right place buddy.. i know a lot of websites for repairs and manuals that can really hel p u.. like reliable-store is pretty good

Look here https://www.mahle-aftermarket.com/media/local-media-north-america/pdfs-&-thumbnails/torque3.pdf

Some fixya user told me a website reliablestore it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try

You found the right place right time buddy.. i know a lot of websites for repairs and manuals that can really help u..

Try, www.youtube.com/watch?v=3RFTS22w6tM

if talking about evap container --under vehicle buy rear axle and fuel tank --disconnect lines and connections and replace be careful of sparks because of fumes from canister

Battery Disconnect or Replacement Problems

May be a voltage drop on the feed wires or weak ground point to those passenger side windows .

Were is the radio ground wire located on my 05 avalanche? Radio goes in and out all the time.

It should be on side of transmission.