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#BS-1991-GMCSIE-6AFC

1991 Gmc Sierra

Based on reports from 12 owners and 2 recalls for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

✅

Preliminary Verdict

Green Light

Based on 12 complaints, 0 crashes, 0 fires, and 2 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the Service Brakes, Hydraulic:antilock/traction Control/electronic Limited SlipHIGH

3 owners reported service brakes, hydraulic:antilock/traction control/electronic limited slip issues — failures commonly reported around 122K miles.

!Inspect the Service Brakes, Hydraulic:foundation ComponentsMED

Look for symptoms of wear and premature failure

+ 6 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip (3 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

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip3 (25%)

Service Brakes, Hydraulic:foundation Components1 (8%)

Seat Belts:front:buckle Assembly1 (8%)

Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings1 (8%)

Exterior Lighting:headlights1 (8%)

Wheels & Tires1 (8%)

Other1 (8%)

Service Brakes, Hydraulic:foundation Components:disc:rotor1 (8%)

1991 Gmc Sierra: Known Issues & Problem Areas

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip Issues

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip complaints account for 25% of all reports filed for the 1991 Gmc Sierra, with 3 owners filing complaints with NHTSA. The median mileage at time of complaint is 122,000 miles, suggesting issues tend to surface around the 122K-mile mark.

Service Brakes, Hydraulic:foundation Components Issues

Service Brakes, Hydraulic:foundation Components complaints account for 8% of all reports filed for the 1991 Gmc Sierra, with 1 owners filing complaints with NHTSA. Owners should pay attention to service brakes, hydraulic:foundation components-related symptoms during test drives and pre-purchase inspections.

Seat Belts:front:buckle Assembly Issues

Seat Belts:front:buckle Assembly complaints account for 8% of all reports filed for the 1991 Gmc Sierra, with 1 owners filing complaints with NHTSA. Owners should pay attention to seat belts:front:buckle assembly-related symptoms during test drives and pre-purchase inspections.

Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings Issues

Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings complaints account for 8% of all reports filed for the 1991 Gmc Sierra, with 1 owners filing complaints with NHTSA. Owners should pay attention to service brakes, hydraulic:foundation components:hoses, lines/piping, and fittings-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

Complaints filed with NHTSA by year for the 1991 Gmc Sierra. Recent trend: increasing.

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

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Recall History (2 recalls)

08E050000Dec 2008

EXTERIOR LIGHTING:HEADLIGHTS

K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."

93V119000Nov 1993

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR

SEVERE CORROSION DUE TO ROAD SALT AT THE JOINT OF THE STAMPED STEEL CENTER SECTION AND THE CAST OUTER SECTION CAN CAUSE THE SECTIONS TO SEPARATE.

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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1991 Gmc Sierra vs. Class Average (Standard Pickup Trucks)

This vehicle

Class avg

Complaint volume is roughly in line with other standard pickup trucks vehicles from 1991.

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. 12 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

2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

View all Gmc Sierra years →

1991 Gmc Sierra: Frequently Asked Questions

What is the most common problem with the 1991 Gmc Sierra?

The most commonly reported issue with the 1991 Gmc Sierra is related to the service brakes, hydraulic:antilock/traction control/electronic limited slip, with 3 complaints filed with NHTSA.

Is the 1991 Gmc Sierra reliable?

The 1991 Gmc Sierra has 12 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.

How much does it cost to fix 1991 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 1991 Gmc Sierra have any recalls?

Yes, the 1991 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 2 complaints with mileage data, the median mileage at time of complaint is 122,000 miles. The highest concentration of reported issues occurs in the 90–120K 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 12 owner reports. Know before you buy.

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