advice please
 

checked out a pontiac 3.4, i'm fairly certain it was a grand am. anyways, while it was being rolled over, (it doesn't run),...the coolant instantly came out of the resivoir tank. is this a head gasket issue?
thanks

Yes
 

Yes,you have a head gasket blown that is letting cylinder compression get into the water jacket.....I had the same thing happen to a Chevy Celebrity-have fun fixing it!