1999 Chevrolet Blazer: engine overheating

5 of the 436 complaints about the 1999 Chevrolet Blazer describe engine overheating.

owner complaints: 5
of this car's complaints: 1%
recalls: 0

Is there a fix? 10 service bulletins cover this area of the car. See below

Engine overheating by model year

2024
2
2023
2
2022
7
2021
8
2020
14
2019
5
2001
3
2000
5
1999
5
1998
7
1997
6
1996
18
1995
11
1994
1
1993
1
1992
1
1990
1

What owners say

Filed Aug 8, 2007 · Engine · 69,400 miles · PA

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). At no time during that trip did the coolant gauge indicate that the vehicle was overheating. I have changed the oil per the recommendation in the owners manual and have done most of the other recommendations and have had no other major issues with the vehicle. On july 12th I had the manifold intake gasket replaced, oil changed and tires rotated in preparation for the trip.

Filed Nov 11, 2006 · Engine · 18,200 miles · FL

Purchased used 99 blazer for business use. 8 miles from dealers site, the day of purchase, vehicle overheated - 18,200 miles on it. Dealer replaced radiator and hoses - full flush of system - refilled with dexcool, at no charge. Solidified rusty sludge clogged radiator, heater core, and hoses - had identical problem with 96 blazer. Personally replaced dexcool with zerex. Independent mechanic has seen 15-18 of these in last two years.

Filed Sep 24, 2003 · Engine · OR

Consumer stated that the anti-freeze that chevrolet was using in vehicle was turning to sludge after 60,000 miles. This caused thermostat to freeze, and heater to become plugged up. Consumer stated that he was lucky that the thermostat froze in an open position because if it was hot it would have caused vehicle to overheat, and that was dangerous. He thought this was a design problem with chevrolet.

Filed Aug 3, 2003 · Engine · 40,000 miles · AR

Engine coolant continues to boil and overheat after having it flushed three times now. Same as 10030550.hy isn't someone doing something? We just want our car fixed . See: http://www.kansascity.com/mld/kansascity/business/5948626.htm http://www.nbc4.tv/newslinks/2369813/detail.html http://www.imcool.com/articles/antifreeze-coolant/dexcool-macs2001.htm http://abclocal.go.com/kgo/news/7oys/072503_7oys_dexcool.html http://www.geocities.com/b_gillie/dexcool_problems.html http://www.consumeraffairs.com/automotive/gm_dexcool.html http://forums.vmag.com/suvsuburban0402/messages/1665.html.

Filed Feb 18, 2002 · Engine · VA

100,00 anti-freeze turned to sludge causing engine overheating. Required replacement of radiator and all hoses. Service advisor stated a known problem with that coolant, and that they recommend coolant system service every 30,000 miles. Also state there were no technical service bulletins from gm regarding this issue. Repair costs $930.00 plus rental.