2012 Chevrolet Avalanche Service and Repair Manual

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Factory-Grade Data

2012 Chevrolet Avalanche service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • LS Crew Cab Pickup 4-Door
  • LT Crew Cab Pickup 4-Door
  • Base Crew Cab Pickup 4-Door
  • LTZ Crew Cab Pickup 4-Door

Engines covered

  • 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

Payment & Security

Payment methods

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  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

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Vehicle Safety Data

2012 Chevrolet Avalanche Recalls & Complaints

NHTSA #21V05100005/02/2021Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

General Motors, LLC (GM) is recalling certain 2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sie

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occ

Remedy

GM will notify owners, and dealers will replace the front passenger air bag inflator with

NHTSA #21V05400005/02/2021Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon,

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occ

Remedy

GM will notify owners, and dealers will replace the front passenger air bag inflator with

TSB #11030974

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

TSB #11030092

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

TSB #11030091

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11027698

This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.

TSB #11027601

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11026104

This service bulletin provides information on Tire Sidewall Irregularities.

TSB #11026017

This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.

TSB #11025755

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the s

Showing the 8 most recent of 557 technical service bulletins on file with NHTSA.

20140618Component: AIR BAGSCrash reported1 injured

THE STEERING WHEEL IS DIFFICULT TO TURN OR CONTROL, WENT TO DEALERSHIP TO FIX THE PROBLEM. AFTER THE DEALERSHIP ALLEGEDLY FIX THE PROBLEM, WE HAD CONTINUED PROBLEMS WITH THE STEERI

20140618Component: STEERINGCrash reported1 injured

THE STEERING WHEEL IS DIFFICULT TO TURN OR CONTROL, WENT TO DEALERSHIP TO FIX THE PROBLEM. AFTER THE DEALERSHIP ALLEGEDLY FIX THE PROBLEM, WE HAD CONTINUED PROBLEMS WITH THE STEERI

20140618Component: POWER TRAINCrash reported1 injured

THE STEERING WHEEL IS DIFFICULT TO TURN OR CONTROL, WENT TO DEALERSHIP TO FIX THE PROBLEM. AFTER THE DEALERSHIP ALLEGEDLY FIX THE PROBLEM, WE HAD CONTINUED PROBLEMS WITH THE STEERI

20130429Component: POWER TRAINCrash reported1 injured

TL* THE CONTACT OWNS A 2012 CHEVROLET AVALANCHE. THE CONTACT STATED THAT WHILE STANDING AT THE REAR DRIVER'S SIDE DOOR WITH THE VEHICLE PARKED AND THE ENGINE RUNNING, THE VEHICLE R

Showing the 4 most serious of 43 complaints filed with NHTSA.

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