Total Complaints
2 filings
GMC BLAZER · model year
1999 GMC BLAZER
2 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1999GMCBLAZER carries 2 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 1 fire, 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 BLAZER is seats:front assembly:power adjust with 1 filings, followed by engine and engine cooling:cooling system:hoses/lines/piping/fittings (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 BLAZER. 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.
2
Complaints
0
Crashes
1
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 |
|---|---|
| SEATS:FRONT ASSEMBLY:POWER ADJUST | 1 |
| ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS | 1 |
Recent Complaints
20020404ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
THE OIL COOLING LINES HAVE BEEN LEAKING FOR QUITE A LONG TIME, AS A ROUTINE THE OIL LEVEL IS CHECKED OFTEN. AFTER CONTACTING A GM DEALER'S SERVICE DEPT THEY TOLD ME IT IS A VERY COMMON PROBLEM WITH THIS BLAZER AND WITH THE TRUCK NO LONGER UNDER WARRANTY TO CONTACT THE DELIVERING DEALERSHIP. BESIDES THESE HOSE ASSEMBLIES ARE ON BACK ORDER I WAS TOLD, WHICH MEANS IT IS A COMMON PROBLEM AND IT MAY BE A MATTER OF TIME BEFORE OIL FIRES MAY ERUPT IF THE LINE COMPLETELY FAILS. AFTER CONTACTING THE DELIVERING DEALERSHIP THEY WILL BE GLAD TO REPLACE THE HOSES FOR $375, IN WHICH I WOULD REPLACE MYSELF, BUT NO PARTS AVAILABLE.*AK
20010628FireSEATS:FRONT ASSEMBLY:POWER ADJUST
THE CAUSE FOR FIRE MAY BE DUE TO FAULTY WIRING OR ELECTRICAL SHORT CIRCUIT UNDER THE SEAT. *AK
Compare 1999GMCBLAZER to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1999 GMC BLAZER have?▼
The 1999 GMC BLAZER has 2 NHTSA complaints, 0 crashes, 1 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1999 GMC BLAZER?▼
The most-complained component for the 1999 GMC BLAZER is SEATS:FRONT ASSEMBLY:POWER ADJUST with 1 complaints. Other frequently reported areas include ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS.
Is the 1999 GMC BLAZER 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.