Sierra Classic 2500 2WD V8-6.6L DSL Turbo (2007)
9. Remove the air inlet tube to intake manifold tube bolt and nut.
10. Disconnect the intake air heater electrical connector.
11. Disconnect the manifold absolute pressure (MAP) sensor electrical connector.
12. Remove the engine harness clip from the air inlet tube.
13. Disconnect the exhaust gas recirculation (EGR) valve motor harness connector.
14. Remove the 4 screws that secure the EGR valve motor to the EGR valve.
15. Remove the EGR valve motor from the EGR valve.
16. Remove the air inlet tube.
17. Remove the intake air heater nuts and bolts.
18. Separate the air inlet tube from the intake air heater.
19. Remove the air inlet heater (IAH) and discard the IAH gasket.
INSTALLATION PROCEDURE
1. Install the IAH using a NEW gasket.
