Engine Controls - Trouble Shooting - No Codes - 4.3L: Symptoms: Notes
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 - 4.3L ASTRO, BLAZER, JIMMY CANADIAN, SAFARI, SONOMA & S10 PICKUP article.