GMC 1999 Sierra 1500 Pickup Owner's Manual page 265

Fickup
Bed Mounting
K2518
To remove the spare tire:
1. Turn the nut counterclockwise until
it
comes off.
,
2. Pull the tire
off of the bolt and remove it from the bed.
Chanaina the Tire
'
K2519
Start with the- jack, the jack handle and the ratchet. If the flat tire is on the
rear of the vehicle, you'll need the jack handle extensions also.
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