Section 220 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES - 6.0L W/BiFuel & CNG): Symptoms: Notes

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Savana, 2003 Chevrolet Silverado, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before proceeding with any symptom diagnosis, perform PRELIMINARY INSPECTION .

NOTE: If PCM displays data but engine fails to start, see NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - 6.0L CHEVY EXPRESS, SAVANA, SIERRA & SILVERADO - BI-FUEL & CNG article.