(h) If you drive regularly under dusty conditions,inspect the filter at each engine oil change.(j) Visually inspect belt for fraying, excessivecracks, or obvious damage. Replace belt ifnecessary.(k) Drain, flush, and refill intercooler system. Thisservice can be complex; you should have yourdealer perform this service. See Engine Coolant onpage 385 for what to use. Inspect hoses. Cleanpressure cap and filler neck. Pressure testthe system and pressure cap.(l) For supercharged engines only: Have yourdealer check the supercharger oil level and addthe proper supercharger oil as needed (or every36 months, whichever occurs first). SeeRecommended Fluids and Lubricants on page 473.Owner Checks and ServicesThese owner checks and services should beperformed at the intervals specified to help ensurethe safety, dependability, and emission controlperformance of your vehicle. Your GMGoodwrench® dealer can assist you with thesechecks and services.Be sure any necessary repairs are completed atonce. Whenever any fluids or lubricants are addedto your vehicle, make sure they are the properones, as shown in Recommended Fluids andLubricants on page 473.At Each Fuel FillIt is important to perform these underhood checksat each fuel fill.Engine Oil Level CheckCheck the engine oil level and add the proper oil ifnecessary. See Engine Oil on page 377 forfurther details.Notice: It is important to check your oilregularly and keep it at the proper level. Failureto keep your engine oil at the proper levelcan cause damage to your engine not coveredby your warranty.Engine Coolant Level CheckCheck the engine coolant level and addDEX-COOL® coolant mixture if necessary. SeeEngine Coolant on page 385 for further details.470
