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2012 GMC Sierra 3500 HD 2012 WT Extended Cab Pickup

Repair services & inexpensive new parts for 2012 GMC Sierra 3500 HD 2012 WT Extended Cab Pickup with 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged engine.

The 2012 GMC Sierra 3500 HD WT Extended Cab Pickup is a robust and powerful truck designed for heavy-duty tasks, featuring a turbocharged 6.6L V8 diesel engine that delivers impressive torque and towing capabilities. This four-door, 4WD vehicle is ideal for those who need a reliable workhorse with ample space and durability. With its sturdy build, the Sierra 3500 HD is well-suited for both commercial use and adventurous off-road drives.

Common Issues

  • Transmission problems, particularly in high-mileage vehicles.
  • Diesel particulate filter (DPF) clogging, which can affect performance.
  • Suspension wear and tear, especially if frequently driven with heavy loads.
  • Issues with the fuel injection system, leading to rough idling or poor fuel efficiency.

Maintenance Tips

  • Regularly change the engine oil and filters to maintain engine health.
  • Inspect and clean the DPF regularly to prevent clogging.
  • Check the transmission fluid levels and quality frequently.
  • Ensure the suspension system is checked for wear during routine maintenance.
  • Schedule periodic fuel system inspections to prevent injector issues.

Typical Repair/Ownership Cost Ranges

  • Oil change: $100 - $150
  • Transmission repair: $1,500 - $3,000
  • DPF cleaning/replacement: $800 - $2,000
  • Suspension repairs: $500 - $1,500
  • Fuel injector replacement: $300 - $1,200 per injector

Buying Advice

  • Inspect the transmission for any signs of slipping or harsh shifts.
  • Check the condition of the DPF and inquire about its maintenance history.
  • Look for uneven tire wear, which could indicate suspension issues.
  • Listen for any unusual engine noises that may suggest injector problems.
  • Ensure all electronics and 4WD system components are functioning properly.

FAQ

  • What is the towing capacity of the 2012 GMC Sierra 3500 HD? The towing capacity can vary based on configuration, but it typically ranges up to 17,000 pounds.
  • How often should the oil be changed in the 6.6L diesel engine? It is recommended to change the oil every 5,000 to 7,500 miles, depending on usage conditions.
  • Are there any recalls for the 2012 Sierra 3500 HD? Check with a GMC dealer or the NHTSA website for any outstanding recalls specific to this model.
  • What type of fuel does the 2012 Sierra 3500 HD use? This model uses diesel fuel.
  • Does the 2012 Sierra 3500 HD have a built-in brake controller? Yes, many models come equipped with an integrated trailer brake controller.

Have Questions about GMC Sierra 3500 HD 2012 WT? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: GMC
Model: Sierra 3500 HD
Trim: WT Extended Cab Pickup 4-Door
Year: 2012

Quick Info

Fuel: DIESEL
Aspiration: Turbocharged
Engine Displacement: 6.6L
Engine CC: 6599
Engine CID: 403
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 8
Drive: 4WD
Body Type: Extended Cab Pickup
Doors: 4

Repair services & inexpensive new parts for 2012 GMC Sierra 3500 HD 2012 WT Extended Cab Pickup with 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged engine.