GMC 2008 Chevrolet Tahoe Supplemental Owner's Manual page 68

Be sure to read and follow all of the tire sealant and
compressor kit instructions. The kit includes:
A. Air Compressor
B. Tire Sealant Canister
C. Air Compressor
Accessory Plug
5-32
D. On/Off Switch
E. Air Pressure Gage
F. Air Only Hose
G. Sealant/Air Hose
Accessing the Tire Sealant and
Compressor Kit
The tire sealant and compressor kit is located under the
storage tray, which is located on the driver side trim
panel (over the rear wheelhouse). To access the
tire sealant and compressor kit:
1. Remove the tray by pulling up on the finger
depression to access the tire sealant and
compressor kit.