C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
7. Remove the battery supply harness connector nut and harness connector (3) from the IAH relay (2).
8. Disconnect the intake air heater (IAH) supply harness connector nut and connectors (4)from the relay (2).
9. Remove the IAH relay mounting nuts (5) from the mounting studs.
10. Remove the intake air heater Relay.
INSTALLATION PROCEDURE
1. Install the intake air heater (IAH) relay on the mounting studs.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the intake air heater relay mounting nuts (5).
Tighten
Tighten the nuts to 20 N.m (15 lb ft).
3. Install the IAH supply wiring harness connector (4) and nut on the IAH relay (2)
Tighten
Tighten the nut to 5 N.m (44 lb in).
4. Install the battery supply wiring harness connector (3) and nut on the IAH relay (2).
Tighten
Tighten the nut to 5 N.m (44 lb in).