- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Try to see if the bulbs blew out by replacing the bulbs first. If they still won't light, it could be bad grounds or connections or bad continuity in the wiring to the headlight relays or switch. Good luck on this repair.
If the fan is attached to it than it is the water pump making the noise and it will need to be replaced. If the fan clutch is not attached to it than it is either the idler pulley or the tensioner pulley. The tensioner is on the passenger side (left) of the front of the motor.
If you have the Inline 6 cylinder engine, the plugs are on top of the engine under the airbox (the one that says Vortec 4200). The airbox is held down by several bolts, disconnect the large air inlet hose and small hose on right side. Once airbox is removed, the coil packs can be seen, remove one coil pack at a time by loosening the single bolt (this bolt stays on the pack), carefully pry the coil pack up. The spark plug will be visible in the well. Make sure to clean out the well before loosening spark plug. Make sure to use only AC Delco plugs.
Is your "Service engine soon" light on?? If so, have your vehicle's computer scanned for error codes. If not, Clean or replace the IAC valve (idle air control valve). This unit controls airflow through the engine while the gas pedal isnt pressed or A/C is powered on.