Vehicle Care 10-59or odometer calibration,headlamp aim, bumper height,vehicle ground clearance, and tireor tire chain clearance to thebody and chassis.Used Replacement Wheels{ WARNINGReplacing a wheel with a usedone is dangerous. How it hasbeen used or how far it has beendriven may be unknown. It couldfail suddenly and cause a crash.When replacing wheels, use anew GM original equipmentwheel.Tire Chains{ WARNINGDo not use tire chains. There isnot enough clearance. Tire chainsused on a vehicle without the(Continued)WARNING (Continued)proper amount of clearance cancause damage to the brakes,suspension, or other vehicleparts. The area damaged by thetire chains could cause loss ofcontrol and a crash. Use anothertype of traction device only if itsmanufacturer recommends it forthe vehicle's tire size combinationand road conditions. Follow thatmanufacturer's instructions. Toavoid vehicle damage, driveslowly and readjust or remove thetraction device if it contacts thevehicle. Do not spin the wheels.If traction devices are used, installthem on the rear tires.If a Tire Goes FlatIt is unusual for a tire to blow outwhile driving, especially if the tiresare maintained properly. If air goesout of a tire, it is much more likely toleak out slowly. But if there ever is ablowout, here are a few tips aboutwhat to expect and what to do:If a front tire fails, the flat tirecreates a drag that pulls the vehicletoward that side. Take your foot offthe accelerator pedal and grip thesteering wheel firmly. Steer tomaintain lane position, and thengently brake to a stop, well off theroad, if possible.A rear blowout, particularly on acurve, acts much like a skid andmay require the same correction asused in a skid. Stop pressing theaccelerator pedal and steer tostraighten the vehicle. It may bevery bumpy and noisy. Gently braketo a stop, well off the road,if possible.