why do I get a message saying that the a/c has been turned off to protect the engine?
Sounds like your engine is very low on coolant and is overheating. Refill the cooling system, bleed the air out and check for leaks. HTH. -Jim
Search Pontiac Grand Prix Questions
Pontiac Grand Prix Experts
Related Models For Sale
Used Toyota Camry"
901 Great Deals out of 78,023 listings starting at $1,500
Used Ford Fusion"
799 Great Deals out of 66,285 listings starting at $2,900
Used Mercury Milan"
46 Great Deals out of 1,247 listings starting at $3,500