Target Audience:
DIY mechanics, independent repair shops, and GMC Sierra 1500 owners seeking comprehensive repair and maintenance data.
Advantages Over Print:
Instant access, searchability, compatibility with multiple devices, and often more up-to-date than legacy printed manuals.
Convenience:
Accessible from anywhere with an internet connection, eliminating the need for physical storage.
Accuracy:
Derived from OE (Original Equipment) factory data, ensuring high accuracy and reliability.
Value Proposition:
Significant cost savings compared to professional repair labor and potentially less expensive than printed OE manuals.
Primary Coverage:
Service and Repair
Diagnostic Coverage:
Comprehensive diagnostics, troubleshooting, and repair procedures.
Maintenance Coverage:
Scheduled maintenance, fluid changes, filter replacements, and component inspections.
Estimated Pages:
Extensive, covering all systems. Specific page count not provided but implied to be comprehensive like OE service manuals.
Type:
Online Service and Repair Manual Software
Source Licensing:
Officially Licensed OE (Original Equipment) Materials from RepairSurge
Access Method:
Online Subscription with Web Browser Access
Device Compatibility:
PC, Laptop, Smartphone, Tablet
Subscription Length:
1 Year (with options for renewal/extension)
Powertrain:
Engine mechanical, engine electrical, fuel system, exhaust system, transmission (automatic and manual), driveline, axles, transfer case (if applicable).
Chassis:
Suspension (front and rear), steering, brakes (hydraulic and power assist), wheels and tires.
Body:
Body panels, doors, windows, glass, interior trim, exterior trim, bumpers, seats, restraints.
Electrical:
Wiring diagrams, lighting, power distribution, charging system, starting system, instrument cluster, body control module (BCM), infotainment, HVAC controls, power accessories.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system diagnostics and repair.
Repair Procedures:
Step-by-step repair instructions for all major components and systems.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting guides.
Maintenance:
Detailed procedures for routine maintenance tasks.
Diagnostics:
OBD-II diagnostic trouble code (DTC) definitions, testing procedures, and repair strategies.
Depth:
Factory-level detail suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Tools:
Information often includes specifications for specialized diagnostic tools and equipment.
Engine Options:
Likely covers multiple engine variants offered in the 2012 Sierra 1500. Common engines for this year include: 4.8L V8 (L20), 5.3L V8 (LMF, LH6, LC9), and 6.2L V8 (L9H).
Engine Displacement 5 3L:
5.3 Liters (327 cubic inches)
Horsepower 5 3L Lc9:
Approximately 315 hp @ 5200 rpm (with Active Fuel Management)
Torque 5 3L Lc9:
Approximately 335 lb-ft @ 4000 rpm (with Active Fuel Management)
Fuel Type:
Unleaded Gasoline (FlexFuel capability on some LC9 engines)
Injection Type:
Sequential Multi-Port Fuel Injection (MPI) / Direct Injection (DI) depending on engine variant and year update.
Block Material:
Cast Iron (likely)
Cylinder Head Material:
Aluminum
Valve Train:
Overhead Valve (OHV), 2 valves per cylinder (typical for 4.8L, 5.3L) or Overhead Valve (OHV), 4 valves per cylinder (for 6.2L, though uncommon for this specific year/model representation).
Transmission Type:
4-Speed Automatic (4L60-E / 4L70-E) is common, 6-Speed Automatic (6L80/6L90) available on higher trims/engines.
Optional Transmission:
6-Speed Automatic Transmission (6L80/6L90) for certain engine configurations.
Transmission Control:
Electronic Transmission Control (ETC) with Tow/Haul mode.
Automatic Transmission Fluid:
GM specification DEXRON-VI (or equivalent)
Body Styles:
Regular Cab, Extended Cab, Crew Cab
Drive Type:
Rear-Wheel Drive (RWD) or Four-Wheel Drive (4WD)
Wheelbase Options:
Multiple wheelbase options available depending on cab and bed configuration (e.g., 119.1", 133.5", 143.5")
Curb Weight Range:
Varies significantly based on configuration, typically from ~4,700 lbs to ~5,500 lbs.
Gross Vehicle Weight Rating Gvw:
Ranges from approximately 6,800 lbs to 7,200 lbs depending on configuration.
Bed Lengths:
Short Bed (approx. 69.3"), Standard Bed (approx. 78.8"), Long Bed (approx. 97.8")
NHTSA Rollover Rating:
Likely 4 out of 5 stars (typical for this generation truck).
Brake System:
Four-wheel disc brakes with Anti-lock Braking System (ABS).
Traction Control:
Traction Control System (TCS), StabiliTrak Electronic Stability Control.
Airbags:
Frontal airbags for driver and passenger, available side-impact airbags and side curtain airbags.
Infotainment System:
Options include AM/FM stereo with CD player, available SiriusXM Satellite Radio, Bluetooth connectivity, and available touchscreen navigation systems.
Parking Assist:
Available Rear Park Assist.
Bluetooth:
Available Bluetooth for hands-free calling and audio streaming.
Oil Change Interval:
Typically every 7,500 miles or 6 months, or based on oil life monitoring system. Consult specific manual for precise interval based on driving conditions.
Tire Rotation:
Every 7,500 miles.
Air Filter Replacement:
Recommended every 24,000 miles or as needed based on inspection.
Engine Oil Specification:
SAE 5W-30, meeting GM specification GMSB-178, GM6094M.
Coolant Specification:
GM P/N 12378390 (Orange Long-Life Coolant) or equivalent, a 50/50 mix of deionized water and ethylene glycol based coolant.
Active Fuel Management Afm Lifter Noise:
A common issue across GM vehicles with AFM is lifter noise due to oil pressure regulation issues. The manual will provide diagnostic steps and potential solutions.
Transmission Hard Shifting:
Some reports of hard shifting in 4L60-E/4L70-E transmissions, often related to solenoid issues or fluid degradation.
Evaporative Emission Control System Evap Leaks:
Check engine lights related to EVAP system leaks, often due to faulty vent solenoid or purge valve.
Gmc Legacy:
GMC (General Motors Company) has a long history of producing trucks and commercial vehicles, known for durability and capability.
Gmt900 Platform:
The 2012 Sierra 1500 is part of the GMT900 platform, which represented a significant redesign from the previous generation, featuring improved aerodynamics, interior comfort, and technology.
Manufacturing Locations:
Assembly plants in North America, including Fort Wayne, Indiana; Oshawa, Ontario, Canada; and Silao, Mexico.
Previous Generation Awards:
While specific awards for the 2012 model year are not detailed, the GMT900 platform generally received positive reviews for its comfortable ride, capable powertrain, and updated interior for its time, contributing to strong sales and market presence.
