1997 Chevrolet Blazer S-10 Problems: 1 Issues Every Owner Should Know
1997 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 1997 Chevrolet Blazer S-10 has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues, repair costs range from $400 to $900. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 1996-2005 Chevrolet Blazer S-10 4.3L Vortec V6, same as the S-10 truck - the 4.3L Vortec V6 develops intake manifold gasket leaks. The Blazer version is identical mechanically.
Common Symptoms
- Coolant leak at intake
- Low coolant
- Overheating
- Rough idle
How to Fix
Pressure-test the cooling system and inspect the front and rear edges of the lower intake manifold for external coolant seepage; on the 4.3L Vortec, leaks are commonly caused by the original lower intake manifold gaskets deteriorating. The proper repair is to remove the upper plenum and lower intake manifold, replace the lower intake manifold gaskets with the updated metal/rubber design, install new intake bolts if specified, and refill with fresh coolant and engine oil if contamination is present. While apart, inspect the distributor, heater hose fittings, and CPI/CSFI lines for related age-related failures, then torque the intake in the correct sequence to spec. Typical repair cost is about $700-$1,300 depending on labor rates and whether coolant/oil contamination or additional tune-up parts are needed.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeIntake manifold gasket set seals coolant and vacuum leaks (Fel-Pro Intake Manifold Gasket Set)
- UpgradeReplacement intake manifold for cracked or warped originals (Dorman Intake Manifold)