Question about 2008 Chevrolet Avalanche

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Where are the door lock relays in the 2008 Avalanche?

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FUSE AND RELAYS FOR POWER DOOR LOCKS SHOULD BE UNDER THE HOOD.LOOK IN OWNER MANUAL FOR RELAYS LOCATION OR LOOK ON FUSE RELAY COVER FOR RELAYS LOCATION..

Posted on May 08, 2011

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On this website (link below) you finde information where you find fuse box locations, diagram and description for Chevrolet Avalanche (2nd generation) - 2008

Chevrolet Avalanche 2nd Generation fuse box diagram Auto Genius

Posted on Jan 07, 2016

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Most likely under the hood in engine compartment fuse box



hope it helps if so please give good review

Posted on May 08, 2011

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Posted on Jan 02, 2017

iambanshee74

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SOURCE: 08 avalanche pass side power door lock not working

if you have any knowledge of automotivce electrical, (and that you need to use a "circuit tester" and not a test light) test for power when someone presses the button. it wouldnt be uncommon for most vehicles for the lock actuator/solenoid/duty actuator to wear out, get weak and fail. this is most probable. given that this is an 08, have you checked withe dealer to see if its still under warranty. if we are only talking a few miles and they wont do anything, look in your owners handbook and get the 1 800 number and get GM's customer service involved. cheers.

Posted on Dec 02, 2009

Anonymous

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SOURCE: 2008 avalanche 3 door locks not working started

each door has there own door lock solenoid, the only thing they have in common is one fuse, either they all work or none of them will work. So I would say the door lock actuator inside the door has failed.

Posted on Dec 16, 2009

Deadly Rhinoceros

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SOURCE: good afternoon....what would cause my 2008 Chevy

It could be the power lock motor. You could have a short or bad wiring harness. Might just be a fuse that connects to both. But since you said it's only the driver side. When the power lock motor is bad it can trigger your alarm because they're wired together.

Hope that helps. Good luck.

Posted on Apr 06, 2010

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All 4 of my door locks will not work. fuses are good. when ilock with fob the computer indicates that doors are locked but they are not


Those new chevys have option for setting how the locks work,,, check it the settings menu on the dash,,,also the doors will not lock with engine off and key in the ignition,, even with the fob,,,also check the child safty switches to on rear doors,, and the relays under hood,,, just a few suggestions

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I have a 2008 avalanche and I'm having problems


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Oct 23, 2017 | 2008 Chevrolet Avalanche

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I have a 08 chevy avalanche the driver side front and rear door locks won't work when I use my keyless entry button or on the inside driver panel. Could it be a fuse? Passenger side works fine I try...


Do the power windows work ? DDM - driver door module fuse 15 amp - location is the instrument panel fuse box , plus LT DR circuit breaker 25 amp. Circuit breakers rarely go bad . The power locks are controlled by electronic's .The passenger side has another power supply ,that's why they still work .
Door Lock System Components
The power door lock system consists of the following components:
• The driver door switch (DDS)
• The passenger door switch (PDS)
• The body control module (BCM)
• The driver information center (DIC)
• The rear door lock/unlock relay (LBEC)
• The reversible door lock actuators in each of the doors and liftgate

The front power door lock switches are integral components of the driver door module (DDS) and passenger door module (PDS). The switches are 2 position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDS or PDS. The DDS or PDS monitors these inputs and sends a LAN message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the LAN message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock/unlock relay and also send a LAN message to the DDS and PDS to perform the appropriate function.
The modules which activate the power lock motors are:
• The DDS (driver door lock actuator)
• The PDS (passenger front door lock actuator)
• The BCM (both rear door lock actuators and cargo door/liftgate)
The DDS and PDS are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and endgate doors are controlled by the BCM through the rear door lock/unlock relay which is incorporated onto the printed circuit board in the LH BEC. The BCM controls the unlock relay by providing ground to energize the coil and controls the lock relay by providing battery voltage to energize the relay coil. The energized the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. Since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.

It's possible you have broken wire or wires inside the flex boot from the body of the vehicle to the driver's door . This happens a lot .
Fuse Block - I/P instrument panel
Left of the I/P behind the side trim panel

Mar 04, 2018 | 2008 Chevrolet Avalanche

1 Answer

I have a 2008 Chevy Avalanche with remote door unlock. The keyless remote stopped working on the driver door but still works on all other doors and the tailgate. If I use the key only on the driver door...


Does the switch inside for that door work ? Does the power window work for that door ? Check fuse DDM - 15 amp I/P fuse panel . Do you know where the insturment panel fuse box is located ?
Fuse Block - I/P
Left of the I/P behind the side trim panel
# 4
DDM Fuse
15A
Driver Door Module (DDM)

Do you know anything about automotive electronic's , control module's ? Serial data communication networks ?
Circuit/System Description
The driver and passenger door lock and side window switches are integrated control module switch assemblies. The DDS and PDS door lock switches are normally open, 2 position rocker type switches, with detents for lock and unlock. The DDS and PDS are directly connected to the respective door lock actuator through the door lock actuator control circuits. When a door lock or unlock function is activated from the DDS or PDS, a serial data message lock or unlock command is sent to the other door switch and body control module.

Sep 15, 2017 | 2008 Chevrolet Avalanche

1 Answer

Good afternoon....what would cause my 2008 Chevy


It could be the power lock motor. You could have a short or bad wiring harness. Might just be a fuse that connects to both. But since you said it's only the driver side. When the power lock motor is bad it can trigger your alarm because they're wired together.

Hope that helps. Good luck.

Apr 06, 2010 | 2008 Chevrolet Avalanche

1 Answer

2008 avalanche 3 door locks not working started with front passenger now both driver front and rear won't open or lock.


each door has there own door lock solenoid, the only thing they have in common is one fuse, either they all work or none of them will work. So I would say the door lock actuator inside the door has failed.

Dec 15, 2009 | 2008 Chevrolet Avalanche

1 Answer

2007 chevy avalanche electrical issues


You need to remove the carpet on the passengers side and check the wireing harness,take off the tape and visually inspect it.You are likely to find broken splices ,bare wires or wires shorted to each other or to ground.

Dec 08, 2009 | 2008 Chevrolet Avalanche

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