C 2500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2001)
Intake Air Heater Relay: Service and Repair
With California Emissions
Intake Air Heater (IAH) Relay Replacement (California Emissions)
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Loosen the outlet duct clamp at the upper intake manifold.
3. Remove the upper intake manifold cover from the outlet duct.
4. Remove the upper intake manifold cover.
5. Disconnect the engine harness electrical connector (2).
6. Disconnect the intake air heater (IAH) relay electrical connector (3).