rajalx

Thanks,for all the replies,,my coolant is new,system has been flushed,, the ac works in the summer my temp setting goes upto 90degrees,but only blows heat out the passenge vents ,cold air driver side,,,,,i will check the other possible causes thanks

Hello any one know what causes the heat to only work on the passenger side vents and cold air on the driver side vents,,,its freezing winter and half my heat works,,,but when i let my car sit and idle for awhile the temp gauge gets to about 180 or higher the heat works on the driver side,,but as i drive and the engine temp drops to about 170 to 160 the driver heat stops working and blows cold air while the passenger side blows heat... is it a sensor or something ? please help.... Roger 1999 grand prix gtp

Hello, just looking for information on the best places to find parts for and get engine work done for my pontiac. have a V6 3.8L with supercharger in a 1999 Grand Prix GTP. curious to know how much more horsepower I could get out of it.. Thanks

Thanks, its just stock , have future plans for it and ideas but they are future,, yea like the Phoenix Progression,, nice car !

Alrite thanks !

yea photobucket helps alot ! here is my pontiac ! the code didnt seem to work... Anyone know were I can get a new or good replacement cup holder for the front console? i accidently broke it a few months ago. I looked and looked in salvage yards but you dont see many Grand Prix or any Pontiacs in the yards...

Thanks for the welcome from everyone !

Im trying to figure out how to add the pics now... any advice ?

hey! im Roger, Im driving a 1999 Pontiac Grand Prix GTP, Red with black interior,