20 Most Recent 2008 Chevrolet Avalanche Questions & Answers


There comes a small snake camera that you can adapt to your cell . Or loose your trany snd the converter an push it back a few inches

2008 Chevrolet... | Answered on Jan 27, 2019


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

2008 Chevrolet... | Answered on Mar 04, 2018


problem ground wire on the BCM is logical after the cluster replacement

2008 Chevrolet... | Answered on Oct 23, 2017


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.

2008 Chevrolet... | Answered on Sep 15, 2017


under truck next to gas tank valve attached to canister

2008 Chevrolet... | Answered on Oct 30, 2016


Which do you have
Low Beams - High Intensity Discharge (HID) OR
Low Beams - Standard ?

The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block. I suggest you take an have it diagnosed by an ASE certified repair shop that has a scan tool that can communicate with the BCM .
DTC B2575 00: Headlamp Control Circuit

2008 Chevrolet... | Answered on Mar 15, 2016


How many miles on your vehicle ? Do you see any leak spots on the ground from the truck ? Blue exhaust , oil burning , valve guide seals , piston rings , PCV clogged .

Oil Consumption Diagnosis
Checks
Causes
Excessive oil consumption, not due to leaks, is the use of 1 L (1 qt) or more of engine oil within 3 200 kilometers (2,000 miles).
Preliminary
The causes of excessive oil consumption may include the following conditions:
• External oil leaks
Refer to Oil Leak Diagnosis .
• Incorrect oil level or improper reading of the oil level indicator
With the vehicle on a level surface, run the engine for a few minutes, allow adequate drain down time, 2-3 minutes, and measure for the correct engine oil level.
• Improper oil viscosity
Refer to the vehicle owners manual and use the recommended SAE grade and viscosity for the prevailing temperatures.
• Continuous high speed driving and/or severe usage
• Crankcase ventilation system restrictions or malfunctioning components
Refer to Crankcase Ventilation System Inspection/Diagnosis .
• Worn valve guides and/or valve stems
• Worn or improperly installed valve stem oil seals
Refer to Spark Plug Inspection .
• Piston rings broken, worn, or not seated properly
Allow adequate time for the rings to seat.
Replace worn piston rings, as necessary.
Refer to Cylinder Leakage Test .
• Piston and rings improperly installed or not fitted to the cylinder bore
Refer to Lower Engine Noise, Regardless of Engine Speed

2008 Chevrolet... | Answered on Mar 15, 2016


Switches. Could the child protection switch cause that? Try swapping a front switch to the rear and see if it works. isn't there a switch in the rear doors for child protection stuff? hope that helps.

2008 Chevrolet... | Answered on Feb 26, 2016


The Internet, though, has a large number of web sites where
you can buy service manuals and schematics from bookstores,
publishers, and other collectors. Here is just a sampling of
what sites are out there:

Factory Auto manuals
http://www.factoryautomanuals.com/
search for : factory service auto repair manuals

Repair Service Manuals
http://www.repairservicemanuals.com/
the largest collection of Automotive Repair Service Manuals
and Owners Guides on the internet. Our database currently
holds over 54,000 entries dating back from 1940 to more
recent 2011.


about Chilton Repair Manuals
http://www.chilton.cengage.com/

about Haynes Repair Manuals
Haynes Publishing
Haynes auto manuals
http://www.haynes.com/

2008 Chevrolet... | Answered on Jan 25, 2016


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..

2008 Chevrolet... | Answered on Jan 07, 2016


There is no magic fix button provided as standard equipment on your vehicle. You will need to perform standard diagnostic procedures to ascertain the source of the failure to start.
Begin by doing a readout of all stored codes from the ECU. This will give you a starting point from which to proceed in diagnosis. Check all systems, including FUEL, IGNITION, and SECURITY.

2008 Chevrolet... | Answered on May 27, 2015


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

2008 Chevrolet... | Answered on Mar 04, 2015


Sounds like a recall issue. Check with Chevrolet

2008 Chevrolet... | Answered on Jan 21, 2015

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