C 2500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2001)
Glow Plug Relay: Locations
Glow Plug/Intake Heater Relay Assembly
GLOW PLUG/INTAKE HEATER RELAY ASSEMBLY
(Federal Vehicles Only)
The Glow Plug/Intake Heater Relay Assembly is located on the left side of the engine, above the valve cover.