The 1997-2008 Pontiac Grand Prix GTP doesn't have a separate oil reservoir for the supercharger. The supercharger uses the
same engine oil as the rest of the engine. Therefore, you check the supercharger's oil level by checking the
engine oil level using the dipstick in the usual way.
There's no special procedure; just follow the instructions in your owner's manual for checking the engine oil level. Make sure the engine is off and has been sitting for a few minutes to allow the oil to settle.
