LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1990 >> Value Van 3.9 L >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (Gasoline) >> Fuel System Pressure Relief (Gasoline) >> Model 220 TBI Unit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Model 220 TBI Unit

WARNING: Fuel pressure is relieved and drops to zero when ignition is turned off. To minimize the risk of fire and personal injury, cover area to be disconnected with a shop rag.