Total Complaints
6 filings
GMC C/K 1500 · model year
1999 GMC C/K 1500
6 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1999GMCC/K 1500 carries 6 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, 0 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 1999 C/K 1500 is service brakes, air:antilock:control unit/module with 1 filings, followed by service brakes, air:antilock:wheel speed sensor (1) and fuel system, other:storage:fuel gauge system (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 1999 C/K 1500. 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.
6
Complaints
0
Crashes
0
Fires
0
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 |
|---|---|
| SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE | 1 |
| SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR | 1 |
| FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM | 1 |
| STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS | 1 |
| SERVICE BRAKES | 1 |
| STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS | 1 |
Recent Complaints
20140409STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS
I BOUGHT THIS 1999 GMC SIERRA 1500 3 DOOR TRUCK ABOUT 4 MONTHS AGO THE BODY HAS NO SIGN OF RUST.BUT UNDERNEATH IS LIFE THREATENING I WAS DRIVING NORMAL SPEED MAYBE 55MPH AND I HEARD A POP AND MY FRAME BROKE IN TWO DIFFERENT PLACES BECAUSE OF RUST. NOW I WELDED IT UP JUST TO GET ME BACK N FORTH TO WORK. WITCH IS STILL LIFE THREATENING BUT I HAVE NO OTHER CHOICE. I CAN NOT AFFORD A NEW TRUCK ESPECIALLY WHEN I STILL GOT 3000 TO PAY ON THIS ONE. THE FRAME LITERALLY BROKE IN HALF, UNDER THE CAB ON DRIVER SIDE, AND BY THE BACK WHEEL ON PASSENGER SIDE. IT CAUSE THE BED TO HIT THE CAB AND KNOCK A DENT IN IT. NOT SAFE AT ALL. *TR
Mileage: 114,000
20121026SERVICE BRAKES
BRAKE LINE CORRODED. VEHICLE WOULD NOT STOP. USED EMERGENCY BRAKE. WAS LUCKY ANOTHER BAKE LINE JUST WENT. (10/25/2012) AND THEY ARE REPLACING 2 MORE THIS TIME. OTHERS HAVE SUGGESTED REPLACING ALL. TOTAL OF 3 BRAKE LINES GONE BAD IN THIS GMC. *TR
Mileage: 103,000
20051226STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS
TAILGATE STRAPS BREAKING. *NM
20050823FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM
FUEL GUAGE INOPERATIVE ON 1999 1500 GMC SIERRA. PROBLEM BEGAN AFTER WARRANTY EXPERED AND HAS CONTINUED TO DATE.
Mileage: 64,000
20050602SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR
BRAKES FAIL AT SPEEDS BELOW 10 MPH.
Mileage: 45,000
20031112SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
LIKE MANY OTHERS THE MODULE THAT CONTROLS MY ABS ON 1999 GMC 1500 WENT BAD AT 81000 MILES. THE DEALER REAIR COSTS $1020. FROM READING THESE MESSAGE BOARDS IT APPEARS THERE IS A PROBLEM WITH THESE UNITS THAT GM WILL NOT RECOGNIZE.THIS IS MY 4TH GM TRUCK AND THE ONLY ONE TO EVER HAVE THIS PROBLEM.
Mileage: 81,000
Compare 1999GMCC/K 1500 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1999 GMC C/K 1500 have?▼
The 1999 GMC C/K 1500 has 6 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1999 GMC C/K 1500?▼
The most-complained component for the 1999 GMC C/K 1500 is SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE with 1 complaints. Other frequently reported areas include SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR and FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM.
Is the 1999 GMC C/K 1500 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.