2012 GMC Sierra Report
Known issues, recalls, running costs, and what to check before you buy.
Overall Score
Key Takeaways
- Approach the 2012 GMC Sierra with caution due to its below-average reliability rating.
- The fuel injection pump (CP4) is a critical failure point, potentially leading to expensive repairs and loss of power steering and brakes.
- Electrical system issues, including potential fires, and engine problems are frequently reported.
- Inspect the airbag system and dashboard integrity thoroughly, as these have been noted as concerns.
2012 GMC Sierra
The 2012 GMC Sierra, a full-size pickup, offers robust utility but comes with notable reliability concerns for used-car shoppers. While it generally provides a solid platform for work and hauling, its below-average reliability verdict is driven by significant issues reported by owners. The most common complaints center on the electrical system, body structure, and engine. Potential buyers should be aware of recalls related to the fuel system and ignition, and critically examine the truck's history for signs of these prevalent problems. High fuel costs are also a consideration with its V8 engine options.
Critical Failure Risk
Complaints frequently cite electrical system issues, including power loss and potential fires. This can stem from wiring harness problems or component failures.
Early detection can help you avoid a $500-$4,000 repair.
Safety & Bulletins
Owner Complaints
Performance & Efficiency
Reliability
Practicality
The score is mainly limited by high fuel consumption.
Who This Car Is For
Best for
Buyers prioritizing utility and towing capacity who are willing to undertake rigorous pre-purchase inspections.
+2 more buyer-fit notes in the full report
Avoid if
Drivers seeking a trouble-free, low-maintenance vehicle.
+2 more buyer-fit warnings in the full report
2012 GMC Sierra Reliability Analysis
Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2012 GMC Sierra.
Vehicle Specs
- Fuel Type
- Gasoline or E85
- Transmission
- Automatic 6-spd
- Drivetrain
- Rear-Wheel Drive
- Body Style
- Van
- EPA Combined MPG
- 14
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Most Common Issues
1. Electrical System
Most reportedUsage: 6 reports
2. Structure & Body
Usage: 5 reports
First Service Interval
- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake Inspection
Est. shop cost: $100 - $200
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FAQ
Is the 2012 GMC Sierra reliable?
The CarFocal Reliability Score for the 2012 GMC Sierra is 9.2/10. Reliability score is 9.2/10. NHTSA recalls: 2. Owner complaints: 46.
How practical is the 2012 GMC Sierra for daily use?
Practicality score is 5.0/10. The score is mainly limited by high fuel consumption. EPA combined economy is 14 MPG.
What is the overall score for the 2012 GMC Sierra?
The CarFocal Overall Score for the 2012 GMC Sierra is 6.5/10. Overall score is 6.5/10 (Good). Confidence 55%. Maintenance 8.3/10. Practicality 5.0/10.
What does it cost to own and maintain a 2012 GMC Sierra?
Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Brake Inspection at 7,500 miles. Estimated first-year maintenance: $500 - $1,000. Repair prediction highlight: Electrical System (typical at 75,000 miles, estimated cost Min: $200 • Max: $1,500+).
What engine is in the 2012 GMC Sierra?
Engine specs list 8 • 6.2.
What transmission does the 2012 GMC Sierra use?
According to CarFocal's specs for the 2012 GMC Sierra, transmission is Automatic 6-spd. The paired drivetrain is Rear-Wheel Drive.
Does the 2012 Sierra require Gasoline or E85 gas?
Manufacturer fuel recommendation: Gasoline or E85.
What is the combined EPA MPG for the 2012 GMC Sierra?
EPA combined estimate is 14 MPG.
What driver assistance and safety features are available on the 2012 GMC Sierra?
1 standard driver assistance features. Key features include Tire Pressure Monitoring System.
What body style is the 2012 GMC Sierra?
According to CarFocal's specs for the 2012 GMC Sierra, body style is van.
What drivetrain does the 2012 GMC Sierra use?
According to CarFocal's specs for the 2012 GMC Sierra, drivetrain is Rear-Wheel Drive. Transmission is Automatic 6-spd.
What are the most common electrical system problems on the 2012 GMC Sierra?
Top complaint category: electrical system (6 reports, 13% of complaints).
Are there open safety recalls on the 2012 GMC Sierra?
This model year has 2 official safety campaigns listed.
Should buyers consider alternatives to the 2012 GMC Sierra?
Alternatives listed in this guide: 2012 Ford F-150 and 2012 Ram 1500.