(i) Drain, flush, and refill cooling system. Thisservice can be complex; you should haveyour dealer perform this service. See EngineCoolant on page 368 for what to use. Inspecthoses. Clean radiator, condenser, pressure cap,and filler neck. Pressure test the coolingsystem and pressure cap.(j) If you drive regularly under dusty conditions,the filter could require replacement more often.(k) If you drive regularly under dusty conditions,inspect the filter at each engine oil change.(l) Visually inspect belt for fraying, excessivecracks, or obvious damage. Replace belt ifnecessary.(m) If using DOT-4 brake fluid only: Drain, flush,and refill brake hydraulic system at a regularmaintenance service (I or II) every two years. Thisservice can be complex; you should have yourdealer perform this service. See Brakes onpage 381.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 480.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 360 forfurther details.476
