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 527.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 oilif necessary. See Engine Oil on page 403 forfurther details.Notice: It is important to check your oilregularly and keep it at the proper level.Failure to keep your engine oil at the properlevel can cause damage to your enginenot covered by your warranty.Engine Coolant Level CheckCheck the engine coolant level and addDEX-COOL® coolant mixture if necessary. SeeEngine Coolant on page 415 for further details.Windshield Washer Fluid Level CheckCheck the windshield washer fluid level inthe windshield washer fluid reservoir and addthe proper fluid if necessary.523