Stop leak is a bad idea in any vehicle because it blocks the cooling ports causing the engine to run hot.
a crack or a hole in the tank. or hose for that matter
Why is 2002 pontiac grand am oil leak where the sparkplug is?
florescent dye kit or specific a/c leak detecting equipment
Just had the same problem on my Grand Am. It was the water pump.
It might cause the "check engine" light to come on.
i have a 2000 pontiac grand prix that seem to burn alot of antifree
Coolant leak.
radiator leak. try adding " leak stop"
The 1997 Pontiac Sun fire axle seal can leak because of age. A bad wheel bearing is the most common cause for an axle seal to leak.
i had a fuel leak
A whistling noise indicates a vacuum leak.
Probably an oil leak somewhere.