K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel (2003)
1. Install the auxiliary heater pipes to the vehicle.
2. Install the auxiliary heater pipes (2) to the clamps (5).
3. Install the heater/A/C tubes retaining nut (4) to the stud (1) at the frame (6).
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the nut to 7 N.m (62 lb in).
4. Install the auxiliary heater pipes (2, 3) to the auxiliary heater core.
5. Install the right front wheelhouse panel.
6. Install the right rear wheelhouse panel.
7. Install both of the right tires.
