How do you go about changing your engine coolant on a 1998 Grand Prix SE?

Well.. im not an expert, so there could be other ways, but the easiest way that I do it is to open the bleeder at the bottom side of the radiator, let it all drain out, close the bleeder, and pour the coolant into the radiator cap. Then start your engine, and let it warm up, when the thermostat opens, you should see the coolant level either drop, or start moving. Generally, it will drop. Pour more coolant into the radiator until you cant put anymore in. Put the cap back on, then fill the coolant resivoir(sp?). Remember to only use Dexcool coolant (the orange stuff). Its easier just to get the 50/50 prediluted mix. after driving it a while, check the resivoir to make sure its filled to the line. (cold if the cars has been sitting a while, hot if you've been driving it.

  • ** *** **** DO NOT OPEN THE RADIOTOR CAP WHEN THE ENGINE IS HOT****

Youll more than likely get burnt with boiling hot coolant, so its a good idea to let the car sit for a while first.

Simon.