How To Use This Section

WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.

Use this portion of article only AFTER performing these checks:

Ensure on-vehicle diagnostics work (if equipped). Perform DIAGNOSTIC CIRCUIT CHECK in BASIC TESTING article.
Ensure ECM and SERVICE ENGINE SOON light function properly.
Ensure no trouble codes, except intermittent ones, are stored.
Ensure fuel control system operates properly. Perform FIELD SERVICE MODE CHECK in BASIC TESTING article.
Perform fuel system pressure test.
Visually inspect all systems.

After performing these checks, verify customer complaint, and locate correct symptom from among those listed in this article. Not all items listed under each symptom apply to all models and systems. These procedures normally recommend testing of a system or component on vehicle, such as EGR, EST, TCC, etc. See I - SYS/COMP TESTS article for specific testing procedures.

NOTE: If ECM displays data but engine fails to start, see NO-START DIAGNOSIS in BASIC TESTING article.