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#BS-2012-GMCSIE-6AFC

2012 Gmc Sierra

Based on reports from 46 owners and 2 recalls for this exact model.

Complaints
46
Crashes
7
Fires
7
Recalls
2
TSBs
275
🟡

Preliminary Verdict

Think Twice

Based on 46 complaints, 7 crashes, 7 fires, and 2 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

shake or vibration

2 complaints • Severity 6/10

$X,XXX
2

vibration under heavy load

1 complaints • Severity 10/10

$X,XXX
3

diesel leak in engine bay engine smoking

1 complaints • Severity 10/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the ElectricalHIGH

6 owners reported electrical issues — failures commonly reported around 25K miles.

!Inspect the EngineMED
Look for symptoms of wear and premature failure
+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

24
0–30K
11
30–60K
6
60–90K
90–120K
3
120–150K
150K+

Peak failure range: 0–30K miles (24 reports) • Median: 25K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Electrical (6 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Electrical6 (13%)
Engine6 (13%)
Structure:body5 (11%)
Airbags4 (9%)
Brakes4 (9%)
Steering3 (7%)
Other3 (7%)
Stability Control2 (4%)

2012 Gmc Sierra: Known Issues & Problem Areas

Electrical Issues

Electrical complaints account for 13% of all reports filed for the 2012 Gmc Sierra, with 6 owners filing complaints with NHTSA. The median mileage at time of complaint is 25,371 miles, suggesting issues tend to surface around the 25K-mile mark.

Engine Issues

Engine complaints account for 13% of all reports filed for the 2012 Gmc Sierra, with 6 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.

Structure:body Issues

Structure:body complaints account for 11% of all reports filed for the 2012 Gmc Sierra, with 5 owners filing complaints with NHTSA. Owners should pay attention to structure:body-related symptoms during test drives and pre-purchase inspections.

Airbags Issues

Airbags complaints account for 9% of all reports filed for the 2012 Gmc Sierra, with 4 owners filing complaints with NHTSA. Owners should pay attention to airbags-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

10
12
6
13
10
14
14
15
5
16
1
21

Complaints filed with NHTSA by year for the 2012 Gmc Sierra. Recent trend: decreasing.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (2 recalls)

13V615000May 2014

FUEL SYSTEM, DIESEL

General Motors LLC (GM) is recalling certain model year 2012-2013 Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L diesel engines and dual fuel tanks. In the affected vehicles, the transfer pump which moves fuel from the rear tank to the front tank could malfunction and cause the fuel gauge to indicate an inaccurate reading.

14V827000Feb 2015

ELECTRICAL SYSTEM:IGNITION

General Motors LLC (GM) is recalling certain model year 2011-2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado HD, Silverado LD, Suburban, Tahoe, GMC Sierra LD, Sierra HD, Yukon, and Yukon XL vehicles. In the affected vehicles, the ignition lock actuator may bind, making turning the key difficult or causing the ignition to get stuck in the "Start" position.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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2012 Gmc Sierra vs. Class Average (Standard Pickup Trucks 2WD)

This vehicle

46

Class avg

95

Below the class average — fewer complaints than typical standard pickup trucks 2wd vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 46 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 2 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Gmc Sierra Model Years

201720162015201420132012201120102009200820072006200520042003200220012000199919981997199619951994199319921991199019891988198719861985198419831982198119801979197819771976
View all Gmc Sierra years →

2012 Gmc Sierra: Frequently Asked Questions

What is the most common problem with the 2012 Gmc Sierra?
The most commonly reported issue with the 2012 Gmc Sierra is related to the electrical, with 6 complaints filed with NHTSA.
Is the 2012 Gmc Sierra reliable?
The 2012 Gmc Sierra has 46 complaints, 7 crash reports, and 7 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.
How much does it cost to fix 2012 Gmc Sierra problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2012 Gmc Sierra have any recalls?
Yes, the 2012 Gmc Sierra has 2 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Gmc Sierra problems start?
Based on 44 complaints with mileage data, the median mileage at time of complaint is 25,371 miles. The highest concentration of reported issues occurs in the 0–30K mile range. The full report breaks down exactly which components fail at each mileage bracket.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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10 sections of AI analysis based on 46 owner reports. Know before you buy.

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