Total Complaints
4 filings
GMC SIERRA · model year
1977 GMC SIERRA
4 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1977GMCSIERRA carries 4 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 2 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1977 SIERRA is tires with 2 filings, followed by service brakes, hydraulic (1) and fuel system, gasoline (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 2 investigation files overlapping the 1977 SIERRA. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
4
Complaints
0
Crashes
0
Fires
2
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| TIRES | 2 |
| SERVICE BRAKES, HYDRAULIC | 1 |
| FUEL SYSTEM, GASOLINE | 1 |
Recent Complaints
20040422SERVICE BRAKES, HYDRAULIC
GAS LINE OF SADDLE TANK LEAKED, FUEL PUMP WENT OUT,DISPURSED GAS WHILE DRIVING,LUCKILY SMELLED GAS,IMMEDIATLY PULLED OVER, SHUT MOTOR DOWN,ALSO BRAKES FAILED, HAD TO REPLACE MASTER CYLINDER. WANT ALSO TO KNOW ABOUT CLASS ACTIN SUIT ON SADDLE TANK'S, WANT TO KNOW IF I'M ENTITLED TO A CONSUMER CERTIFICATE FROM GM
Mileage: 141,000
20040422FUEL SYSTEM, GASOLINE
GAS LINE OF SADDLE TANK LEAKED, FUEL PUMP WENT OUT,DISPURSED GAS WHILE DRIVING,LUCKILY SMELLED GAS,IMMEDIATLY PULLED OVER, SHUT MOTOR DOWN,ALSO BRAKES FAILED, HAD TO REPLACE MASTER CYLINDER. WANT ALSO TO KNOW ABOUT CLASS ACTIN SUIT ON SADDLE TANK'S, WANT TO KNOW IF I'M ENTITLED TO A CONSUMER CERTIFICATE FROM GM
Mileage: 141,000
20020128TIRES
BRIDGESTONE DULLER 684 TIRE, 31X10.5165, DOT#: EJCWCFH207, WHILE DRIVING 55-65 MPH THE LEFT FRONT TIRE BELWOUT, CAUSING CONSUMER TO LOOSE CONTROL OF VEHICLE.*AK THERE WERE MINOR INJURIES. *SLC
20020128TIRES
BRIDGESTONE DULLER 684 TIRE, 31X10.5165, DOT#: EJCWCFH207, WHILE DRIVING 55-65 MPH THE LEFT FRONT TIRE BELWOUT, CAUSING CONSUMER TO LOOSE CONTROL OF VEHICLE.*AK THERE WERE MINOR INJURIES. *SLC
Compare 1977GMCSIERRA to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1977 GMC SIERRA have?▼
The 1977 GMC SIERRA has 4 NHTSA complaints, 0 crashes, 0 fires, 2 injuries, and 0 deaths reported.
What are the most common problems with the 1977 GMC SIERRA?▼
The most-complained component for the 1977 GMC SIERRA is TIRES with 2 complaints. Other frequently reported areas include SERVICE BRAKES, HYDRAULIC and FUEL SYSTEM, GASOLINE.
Is the 1977 GMC SIERRA safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.