2012 Chevrolet Suburban 2500 Service and Repair Manual

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Factory-Grade Data

2012 Chevrolet Suburban 2500 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

  • Base Sport Utility 4-Door
  • LS Sport Utility 4-Door
  • LT Sport Utility 4-Door

Engines covered

  • 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated
  • 6.0L 5967CC 364Cu. 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

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Vehicle Safety Data

2012 Chevrolet Suburban 2500 Recalls & Complaints

No active recalls The 2012 Chevrolet Suburban 2500 has no recalls on file with NHTSA.
No service bulletins No technical service bulletins on file with NHTSA for the 2012 Chevrolet Suburban 2500.
08/12/20Component: POWER TRAINCrash reported1 injured

MY AUTO GEAR SHIFT DISINGAGED FROM THE TRANSMISSION THE CAR STARTED MOVING AS I WAS TRYING TO GET INTO THE DRIVER SEAT WITH DRIVER DOOR CATCHING THE TREE LIMBS AND OPENING THE DOOR AND ME HOLDING ONTO THE INSIDE DOOR HANDLE BROOKE AND I FELL ONTO THE GROUND WHEN THE CAR STOPPED BY BACKING OVER THE CURB AND HITTING ANOTHER TREE. THERE IS A BUSHING HOLDING THE CABLE TO TRANSMISSION LEVER AND MY AUTO TRANSMISSION SHOP AND LOCAL CHEVY DEALER HAVE BOTH TOLD ME THE FAULTY CABLE CONNECTOR GETS BRITTLE AND BREAKS. NO WAY TO SAFELY DRIVE AS I CANNOT MOVE.

07/23/20Component: STRUCTURE1 injured

POWER LIFT GATE DROPPED SUDDENLY ;

11/04/20Component: UNKNOWN OR OTHER,SERVICE BRAKESFire reported

2012 LTZ 4WD SUBURBAN, NOTICED A FAINT HOT SMELL, THOUGHT IT WAS THE ENGINE, TOOK IT IN FOR AN OIL CHANGE ON NEW YEARS EVE 2018 ( WE HAD LOST AN ENGINE IN PREVIOUS SUBURBAN NOT TAKING CHANCE) TOLD BY MECHANIC ALLOY WHEELS ARE HOT, TOOK TO GM DEALER, FRONT WHEEL HUB NEEDED REPLACED, TOOK TO LOCAL GARAGE FOR REPAIR, GARAGE TOLD US BRAKES, CALIPHERS, ROTORS BE REPLACED DUE TO CALIPHERS BEING CLOSED. THEY HAD HARD TIME BLEEDING THE LINES, ALSO REPLACED MASTER CYLINDER, DROVE FOR FEW DAYS SHORT DISTANCE WHEN FRONT BRAKES CAUGHT FIRE, WITHOUT WARNING, TOWED BACK TO GARAGE, THEY COULD NOT FIND CAUSE,

07/26/20Component: STEERINGCrash reported

TL* THE CONTACT OWNS A 2012 CHEVROLET SUBURBAN 1500. THE CONTACT STATED THAT WHILE DRIVING WITHIN 2-5 MPH AND ATTEMPTING TO PARK WITH THE STEERING WHEEL TURNED TO RIGHT, THE STEERING WHEEL SEIZED AND THE VEHICLE CRASHED INTO ANOTHER VEHICLE THAT WAS PARKED. THERE WERE NO INJURIES SUSTAINED. A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS STILL OPERATIONAL. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. THE VEHICLE WAS NOT CURRENTLY SUBJECTED TO NHTSA CAMPAIGN NUMBER: 12V112000 (STEERING). NEITHER THE DEALER NOR THE MANUFACTURER WERE CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 100,00

07/17/20Component: AIR BAGSCrash reported

TL* THE CONTACT OWNS A 2012 CHEVROLET SUBURBAN. THE CONTACT STATED THAT WHILE DRIVING AT 15 MPH, THE CONTACT'S VEHICLE WAS REAR ENDED BY ANOTHER VEHICLE. AS A RESULT, THE CONTACT CRASHED INTO THE PRECEDING VEHICLE. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS FILED AND NO INJURIES WERE REPORTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 47,000.

05/29/20Component: ELECTRICAL SYSTEM,STRUCTURE,ENGINEFire reported

WENT TO PUT MY SHOES ON AND I SAW THAT MY FRONT END OF MY TRUCK WAS ON FIRE .IT HAD BEEN 15 HOURS SINCE I HAD DRIVEN THE TRUCK . THERE WERE FLAMES COMING OUT OF THE FRONT PASSAGNER SIDE ON THE GRILL. AND ENGULFED THE FRONT END OF MY TRUCK. *TR

07/11/20Component: AIR BAGS

This is a recall took my 2012 Surburban to dealership in leavenworth, KS they had vehicle for two weeks did not fix the airbag that is under recall they stated could not get parts for it. So what is the problem with our government system in place to fix these problems but the GM dealership is not fixing the air bag nor do they call and state they have the parts in stock now???

08/19/20Component: STRUCTURE

My dash on my 2012 Suburban cracked within 4 years of its manufactured date and it just keeps getting worse. If there were an accident it is so dry and cracked it will through hard plastic into the driver and passengers. I know of many other same and similar year models that have the same issue. Now that there is a passenger-side airbag recall would be the perfect time for GM to step up and fix this obvious flaw.

Showing the 8 most serious of 101 complaints filed with NHTSA.

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