gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Auxiliary Air Conditioning Evaporator Tube and Heater Pipe Replacement - Intermediate|Page 2735 > < Auxiliary Air Conditioning Evaporator Tube and Heater Pipe Replacement - Intermediate|Page 2733
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1. Connect the evaporator tube (1) to the auxiliary evaporator core.

Tighten the hose fitting to 48 N.m (35 lb ft).

NOTE:  Refer to Fastener Notice in Service Precautions.

2. Install the evaporator tube retaining nuts (2) to the engine and the body.

Tighten the retaining nuts to 6 N.m (53 lb in).

3. Install the bolt retaining the hose (1) to the transmission bracket.

Tighten the retaining bolt to 5 N.m (44 lb in).

4. Lower the vehicle.
5. Install the auxiliary evaporator outlet tube to the compressor hose.

Tighten the fitting to 48 N.m (35 lb ft).

6. Install the engine cover. 
7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
8. Leak test the fittings of the components using the J 39400-A.

Suction Hose Replacement

SUCTION HOSE REPLACEMENT

TOOLS REQUIRED

J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the air cleaner assembly. 

Auxiliary Air Conditioning Evaporator Tube and Heater Pipe Replacement - Intermediate|Page 2735 > < Auxiliary Air Conditioning Evaporator Tube and Heater Pipe Replacement - Intermediate|Page 2733