1999 Chevrolet Blazer Engine cooling Problems
- Complaints
- 62about this part
- Share
- 14%of 436 total for the year
- Median mileage
- 65,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 62 complaints about the engine cooling of the 1999 Chevrolet Blazer, 14% of the 436 complaints for this model year. Where a mileage was given, the median is 65,000 miles. 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I had valve noise and took to local dealer to check. Dealer called and told me it needed a valve job. After the valve job dealer told me there was noise in lower part of engine and thought the motor needed to be replaced. This 1999 Blazer has 68,000 miles on it. I feel GM should cover part of this expense. Dealer would not help with this.”
NHTSA complaint #10164901, filed 2006-08, 68,000 miles“I discovered oil leaking from my 99 chevy Blazer recently. I took it to my local independent mechanic and they informed me that I have two faulty oil cooling lines that must be replaced. Upon further investigation, I have discovered though several local dealerships and several internet web sites, that this is a very very common problem with 99 chevy blazers. I contacted GM customer service but they told me there is no current recall for this defect. …”
NHTSA complaint #10062502, filed 2004-03, 58,000 miles“After having driven the vehicle for about 2 hours on interstate roads (constantly monitoring the coolant gauge - standard for any trip I take). I stopped to go to the rest room and when I returned and started the vehicle it made a horrible loud metal banging noise. I moved the vehicle to that if it needed to be towed it would be ready. I checked the coolant gauge and it was at the very end of the hot zone, checked the coolant and found almost no coolant in the reservoir. I had to put water in to get it home (another 3 hours on the road). …”
NHTSA complaint #10198884, filed 2007-08, 69,400 miles“After noticing that I was loosing anifreeze in my vehicle, I recently had to replace the intake gaskets in my 1999 chevy Blazer. It has just over 40,000 miles. After doing research, I've found out that this is a commom problem w/ the GM vehicles and that there are thousands of people who have had to spend hundreds of dollars in repairs to have this fixed. It conveniently happens just after the warrenty period has expired. This is clearly unfair to the consumer and I would like to know why GM has not been forced to correct this problem.”
NHTSA complaint #10007863, filed 2003-02, 44,298 miles“In 2003, the engine light came on, the air pump, breather, hose and fuse kit needed to be replaced, I paid out of my own pocket for this repair. In 2004, the service engine light came on, the same items needed to replaced and again the dealership wanted me to pay over $600 for service when last year it was over $300. I have replaced both upper and lower ball joints because of cracking noise, everytime I turned left. I replaced the hubs, because a cracking noise. Chevrolet and the dealership were no help, other than they agreed to pay half for air pump repair. Both didn't care for my situation. …”
NHTSA complaint #10093574, filed 2004-10, 54,000 milesRelated service bulletins
- 10246631Sep 1, 2013Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
- 10139019May 3, 2013This preliminary informational bulletin provides information on High Oil Pressure on Startup After Engine Replacement Concern.
- 10012703Feb 1, 2004Diagnostic information for intermittent vehicle no crank dead battery.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 4% |
| 2023 | 2 | 5% |
| 2022 | 1 | 2% |
| 2021 | 3 | 2% |
| 2020 | 3 | 1% |
| 2019 | 1 | 1% |
| 2008 | 1 | 20% |
| 2005 | 1 | 7% |
| 2004 | 4 | 8% |
| 2003 | 6 | 8% |
| 2002 | 20 | 8% |
| 2001 | 23 | 7% |
| 2000 | 63 | 11% |
| 1999 | 62 | 14% |
| 1998 | 64 | 9% |
| 1997 | 93 | 12% |
| 1996 | 149 | 13% |
| 1995 | 213 | 17% |
| 1994 | 42 | 7% |
| 1993 | 51 | 10% |
| 1992 | 9 | 3% |
| 1991 | 12 | 5% |
| 1990 | 5 | 16% |
| 1989 | 4 | 11% |
| 1988 | 7 | 18% |
| 1987 | 2 | 7% |
| 1986 | 5 | 26% |
| 1985 | 5 | 17% |
| 1984 | 1 | 11% |
Other parts of the 1999 Chevrolet Blazer
72 complaintsBrakes
70 complaintsTransmission and drivetrain
54 complaintsSeats
41 complaintsElectrical system
40 complaintsExterior lighting
30 complaintsFuel system
30 complaintsAir bags
26 complaintsVisibility (wipers, defrost, mirrors)
24 complaintsBody and structure
21 complaintsSteering
18 complaintsVehicle speed control
13 complaints
← All problems reported for the 1999 Chevrolet Blazer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology