- PrintableYes
- Works onPC, Mac, iPhone, iPad, Android phones and tablets
- SoftwareWe recommend Sumatra PDF as PDF reader
2012 GMC Sierra 2500 HD / 3500 HD repair manual
$79.99
- Do the labor yourself. On most repairs the shop’s labor costs more than the parts. With the factory procedure you can do that part yourself.
- Built for your VIN. Your engine, transmission and options, so you don’t have to guess which section applies.
- Factory steps, specs and wiring. Repair procedures with illustrations, torque values and the complete wiring diagrams.
- Find any job in seconds. Searchable PDF with a full index and bookmarks.
- In your inbox in 12–24 hours. Yours to keep, on any computer, phone or tablet.
Description
2012 GMC Sierra 2500 HD / 3500 HD OEM service and repair manual, GMT900 – VIN-specific PDF
The 2012 GMC Sierra 2500 HD / 3500 HD (GMT900) factory repair manual, made for your VIN from the same GM service information dealer technicians use: removal and installation steps, torque values, diagnostics and wiring diagrams for your exact Sierra 2500 HD / 3500 HD. The 2012 Sierra 2500 HD / 3500 HD was offered with two engines and two transmissions (listed below); we build your manual for the combination your VIN shows.
This page is for the heavy-duty 2012 Sierra 2500 HD and 3500 HD. For the light-duty truck, see the 2012 GMC Sierra 1500 manual.
The Google Top Quality Store badge, without a subscription. Pay once for this manual; there is no monthly fee and nothing to cancel later.
What you get with this manual
- One payment: no subscription, no login that expires, no monthly fee
- A PDF with working hyperlinks: click a reference in a procedure and you land on the wiring diagram, spec or step it points to. Most PDF manuals sold online are flat scans without them
- Complete wiring diagrams and connector views, not just the mechanical sections
- Computer, phone or tablet: no app needed, and you can print the pages you work from
- Questions answered by a person, not a chatbot, before and after you buy
- A Google Top Quality Store, online since 2015
Owner's manual or repair manual?
The owner's manual in the glovebox explains the controls and the service intervals. This is the other book, the one technicians work from:
- Owner's manual: controls, warning lights, maintenance schedule, fluid types
- Factory repair manual: diagnosis by trouble code, step-by-step repairs, tightening torques, wiring diagrams and connector views
Your 2012 Sierra 2500 HD / 3500 HD is from the GMT900 Sierra HD generation, built for model years 2007–2014. Most procedures are shared with the other years of this generation, but options, software and wiring changed along the way, which is why the manual is built for your VIN.
Engine options
- 6.0L V8 gasoline
- 6.6L Duramax V8 turbo diesel
Transmission options
- 6-speed automatic
- Allison 1000 6-speed automatic
Your manual is built for your version only: the VIN tells us the exact engine and transmission.
Jobs owners of a 14-year-old Sierra 2500 HD / 3500 HD look up most
- Oil leaks: valve cover and oil pan gaskets
- Exhaust leaks and oxygen sensors
- Corroded connectors and ground straps
- A/C compressor and condenser
- Wheel bearings and CV joints
- Glow plugs and cold-start faults
- Diesel particulate filter regeneration
- EGR valve and cooler
What NHTSA records show for the 2012 Sierra 2500 HD / 3500 HD
The U.S. safety agency NHTSA lists 4 safety recalls and 69 owner complaints for the 2012 Sierra 2500 HD / 3500 HD. The factory manual has the procedures for the parts involved.
- Equipment (campaign 18V267000)
- Air Bags: Inflator Module (campaign 21V051000)
- Air Bags: Inflator Module (campaign 21V054000)
- Fuel System, Gasoline: Auxillary Tank (campaign 17V664000)
Most owner complaints concern: Air Bags (13), Electrical System (13), Unknown Or Other (12), Engine (11), Structure (10).
Check your VIN: the 10th character is “C” on a 2012 model.
Also for GMC: 2012 Yukon, 2012 Terrain, 2012 Acadia, 2012 Canyon, 2012 Savana, 2012 Sierra.
How we make your manual
- You give us the VIN at checkout.
- We build the manual from GM data for that exact Sierra 2500 HD / 3500 HD.
- You get a PDF in your inbox within 12–24 hours, to keep on any computer, phone or tablet.
What you'll find in the 2012 Sierra 2500 HD / 3500 HD manual
- General information, vehicle identification and lifting points
- Maintenance schedules, fluids and capacities
- Engine mechanical: timing, cylinder head, lubrication
- Cooling system
- Fuel system and engine management
- Ignition, starting and charging
- Emission controls
- Exhaust system
- Clutch and manual transmission
- Automatic transmission / transaxle
- Driveshafts, axles and differential
- Suspension, front and rear
- Steering
- Brakes and ABS
- Heating, ventilation and air conditioning
- Restraints and airbags
- Body, doors, glass and trim
- Lighting and instruments
- Electrical components and module locations
- Wiring diagrams
- Diagnostic trouble codes
Versions offered
Engines:
- 6.0L V8 gasoline
- 6.6L Duramax V8 turbo diesel
Transmissions:
- 6-speed automatic
- Allison 1000 6-speed automatic
Your manual is built for the version in your VIN.
Video
This video is for information. Your manual looks and works the same way, but it is not identical.
Delivery
Free, by email in 12-24 hours.
