1999 Oldsmobile Cutlass Overheating

Suggested Repair

Replace the thermostat and bleed all air from the cooling system. If a head gasket is suspected, use a chemical block test kit that detects exhaust gases in the coolant.

Conversation Summary

The owner of a 1999 Oldsmobile Cutlass with about 80,000 miles reports overheating, coolant overflowing into the reservoir, and no cabin heat. It used to overheat when stopped and now overheats while moving. The expert suggests a stuck thermostat, replacement, and bleeding air. For a possible blown head gasket, the expert recommends a chemical test kit that reacts to exhaust in the cooling system.