1999 GMC Sierra 1500 Pickup Owner's Manual - Page 263
1999 GMC Sierra 1500 Pickup Manual
Page 263 highlights
Underbody Carrier I CAUTION To help avoid personalinjuryandpropertydamage,neverremove or restowa tire fromhoastowagepositionunderthevehiclewhilethe vehicle is supported by ajack.Always tighten the tire fullyagainst theunderside of thevehiclewhenrestowing. To Remove the Spare Tire a K2535 Theratchethasan UP markinganda DOWN marking. 5-21
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