GMT800 (2000-2006 Tahoe, Suburban, Yukon, Yukon XL, Yukon Denali / Denali XL; 2002-2006 Avalanche)
Key reference: GM 23372321 (key blank)
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Diagnostic port location (OBD)
Illustrative — for orientation only.
LHD (US market only): under the left side of the dash, below and just left of the steering column, facing down into the driver's footwell above the pedals. It sits in the lower-left dash area next to the body control module (BCM) connectors and the left instrument-panel fuse block, near the left footwell courtesy lamp where fitted. Same position on the Tahoe, Suburban 1500/2500, Yukon, Yukon XL, Denali and Avalanche, and on every trim across 2000-2006.
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