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1. i change my oil every 3,000 miles. but what other things should i have being changed. do i have to change the supercharger. or is there a specific thing i can ask for at a garage or gm dealership to fully check my car and change what needs to be changed.

2. i have a water leak coming from under the dash where the passenger is. i dont get why it keeps happening. someone know whats wrong

 

1. Supercharger oil is rated to last 100,000 miles. Fuel filter is good to change after 40k or so.

2. Dude... no problem is worse than mine.. I have a puddle... a ******* puddle... its so bad.. it only does it during the summer though when there is alot of condensation...

On the passenger side firewall, behind the engine, there is this plastic black piece that sticks out...

clean that and it goes away for a little bit..

 

so the water leak isnt that bad at all. since it just water, it wont mess up the carpets.

 

No it can make it a little musky.