GM Service Manual Online
For 1990-2009 cars only

Heater Inlet Hose/Pipe and Heater Outlet Hose/Pipe Replacement LZ4, LZ9


Object Number: 1582943  Size: MF

Callout

Component Name

Preliminary Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the heater inlet hose from the heater pipe assembly. Refer to Heater Inlet Hose Replacement .
  3. Remove the heater outlet hose from the heater pipe assembly. Refer to Heater Outlet Hose Replacement .
  4. Remove the air cleaner duct. Refer to Air Cleaner Outlet Duct Replacement for the 3.5L engine or Air Cleaner Outlet Duct Replacement for the 3.9L engine.

1

Pipe Assembly - Heater Inlet and Outlet Pipe - Left - Nut

Notice: Refer to Fastener Notice in the Preface section.

Tighten
10 N·m (89 lb in)

2

Heater Inlet and Outlet Pipe - Left Pipe Assembly

Tip
Using J 38185 , disconnect the left heater pipe assembly from the front heater pipe assembly.

3

Pipe Assembly - Heater Inlet and Outlet Pipe - Front - Bolt

Tighten
25 N·m (18 lb in)

4

Pipe Assembly - Heater Inlet and Outlet Pipe - Front - Stud

Tighten
10 N·m (89 lb in)

5

Heater Inlet and Outlet Pipe - Front Pipe Assembly