Pontiac Bonneville
cooling system Problems
We don't have a lot of Pontiac Bonneville cooling system problems on file — feel free to add yours here. The most common Bonneville cooling system problems cost $1,600 to fix & occur at 99,000 miles.
The worst model years for cooling system problems are the 1996 Bonneville, 1995 Bonneville, and the 2000 Bonneville.
Worst Pontiac Bonneville Cooling System Problems
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#1: Leaking Coolant, Intake Manifold Gasket Failure 1995 Bonneville
- Average Cost to Fix:
- $2,800
- Average Mileage:
- 75,000 mi
-
#2: Antifreeze Leak, Manifold Problems 1996 Bonneville
- Average Cost to Fix:
- $700
- Average Mileage:
- 109,000 mi
-
#3: Head Gasket Failure 1999 Bonneville
- Average Cost to Fix:
- $1,400
- Average Mileage:
- 114,000 mi