2012 GMC Terrain Service and Repair Manual

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Factory-Grade Data

2012 GMC Terrain 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

  • SLE Sport Utility 4-Door
  • SLT Sport Utility 4-Door

Engines covered

  • 3.0L 182Cu. In. V6 GAS DOHC Naturally Aspirated
  • 3.0L 182Cu. In. V6 FLEX DOHC Naturally Aspirated
  • 2.4L 2384CC 145Cu. In. l4 GAS DOHC Naturally Aspirated
  • 2.4L 2384CC 145Cu. In. l4 FLEX DOHC 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 GMC Terrain Recalls & Complaints

NHTSA #11V51100019/10/2011Component: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

GENERAL MOTORS (GM) IS RECALLING CERTAIN MODEL YEAR 2012 CHEVROLET EQUINOX AND GMC TERRAIN VEHICLES, MANUFACTURED FROM JULY 18, 2011, THROUGH SEPTEMBER 6, 2011, FOR FAILING TO COMPLY WITH THE REQUIRE

Consequence

UNDERINFLATED TIRES CAN RESULT IN TIRE OVERLOADING AND OVERHEATING, WHICH COULD LEAD TO A BLOWOUT AN

Remedy

GM DEALERS WILL UPDATE THE BODY CONTROL MODULE FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEG

NHTSA #22V13700008/03/2022Component: EXTERIOR LIGHTING:HEADLIGHTS

General Motors, LLC (GM) is recalling certain 2010-2017 GMC Terrain vehicles. A reflection caused by the headlight housings may illuminate areas above the vehicle and outside of the driver's view wit

Consequence

The bright reflection may cause a glare for other drivers, reducing their visibility and increasing

Remedy

Dealers will install headlamp appliques, free of charge. Owner notification letters were mailed Sep

NHTSA #16V50200005/07/2016Component: ELECTRICAL SYSTEM:IGNITION

General Motors LLC (GM) is recalling certain model year 2016-2017 Buick Verano and 2016 Chevrolet Malibu as the electronic park lock lever may allow the ignition key to be removed without the transmis

Consequence

If the key is removed without the transmission in PARK, the vehicle may rollaway as occupants are ex

Remedy

GM will notify owners, and dealers will inspect and if necessary replace the key cylinder lock housi

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 #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

TSB #11024485

The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

Showing the 8 most recent of 1840 technical service bulletins on file with NHTSA.

20200204Component: AIR BAGSCrash reportedFire reported2 injured

TL* THE CONTACT OWNS A 2012 GMC TERRAIN. THE CONTACT STATED WHILE DRIVING ABOUT 35 MPH, THE VEHICLE WAS REAR-ENDED BY ANOTHER VEHICLE. THE DRIVER'S AIR BAG BUSTED OPEN, SMOKED AND EMITTED DEBRIS BUT D

20200204Component: SEAT BELTSCrash reportedFire reported2 injured

TL* THE CONTACT OWNS A 2012 GMC TERRAIN. THE CONTACT STATED WHILE DRIVING ABOUT 35 MPH, THE VEHICLE WAS REAR-ENDED BY ANOTHER VEHICLE. THE DRIVER'S AIR BAG BUSTED OPEN, SMOKED AND EMITTED DEBRIS BUT D

20140702Component: AIR BAGSCrash reported3 injured

WE HAD BEGUN TO CROSS AN INTERSECTION AND, WHILE OUR SPEED WAS FROM A DEAD STOP, THE OTHER DRIVER BLEW THROUGH A RED LIGHT AND HIT US AT WHAT WAS PROBABLY THE SPEED LIMIT OF 40MPH. HER CAR STRUCK US

20140702Component: STRUCTURE:BODYCrash reported3 injured

WE HAD BEGUN TO CROSS AN INTERSECTION AND, WHILE OUR SPEED WAS FROM A DEAD STOP, THE OTHER DRIVER BLEW THROUGH A RED LIGHT AND HIT US AT WHAT WAS PROBABLY THE SPEED LIMIT OF 40MPH. HER CAR STRUCK US

20140702Component: SUSPENSIONCrash reported3 injured

WE HAD BEGUN TO CROSS AN INTERSECTION AND, WHILE OUR SPEED WAS FROM A DEAD STOP, THE OTHER DRIVER BLEW THROUGH A RED LIGHT AND HIT US AT WHAT WAS PROBABLY THE SPEED LIMIT OF 40MPH. HER CAR STRUCK US

Showing the 5 most serious of 498 complaints filed with NHTSA.

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