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Diagnostic Circuit Check: Notes

WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 1994 GMC Yukon, 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Suburban, and 1994 GMC Rally Camper Special. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 6.5L with light duty emissions is equipped with a self-diagnostic system. For information on diagnostic system check and retrieving codes, see appropriate G - 6.5L DIESEL TESTS W/ CODES article in the ENGINE PERFORMANCE section below.
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