1999 GMC Sierra 1500 Pickup Owner's Manual - Page 250

Problenrs on the Road Towing Your Vehicle Try tohavea GM dealeroraprofessionaltowingservicetowyourvehicle. Theycanprovidetherightequipmentandknowhowtotow it withoutdamage. If your vehicle has been changed since it was factory-new,byaddingthings likefoglamps,aeroskirting,orspecialtiresandwheels,thesethings could bedamagedduringtowing. Beforeyoudoanything,turnonthehazardwarningflashers. Whenyoucall,tellthetowingservice: Thatyourvehiclehasrear-wheeldrive, option. Themake,model,andyearofyourvehicle. Whetheryoucanmovetheshiftleverforthetransmissionandtransfer case, if youhaveone. If there wasanaccident,whatwasdamaged. or that it hasthefour-wheeldrive I A To helpavoidinjury to you or others: in avehiclethat is being towed. Never letpassengersride Nevertowfasterthansafeorpostedspeeds. Nevertowwithdamagedpartsnotfullysecured. Nevergetunderyourvehicleafter truck. it hasbeenliftedbythetow Alwaysuseseparatesafetychainsoneachsidewhentowinga vehicle. off. The steering Whenyourvehicleisbeingtowed,havetheignitionkey wheelshouldbeclamped in astraight-aheadposition, withaclampingdevice designedfortowingservice. Do notuse thevehicle'ssteeringcolumnlockfor if youhaveone,shouldbe in Neuthis.Thetransmissionandtransfercase, tralandtheparkingbrakereleased. If youhaveatwo-wheeldrivevehicle,don'thaveyourvehicletowedonthe rearwheels,unlessyoumust.Ifthevehiclemustbetowedontherear 35 mph (56 km/h)orfartherthan 50 miles (80 wheels,don'tgomorethan krn)oryourtransmissionwillbedamaged. If theselimitsmustbeexceeded, thenthereardrive wheelshavetobesupportedonadolly. 5-8