GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Suction Hose Replacement

Suction Hose Replacement LY2, LMF, L76 and L92


Object Number: 1684784 Size: MF

Callout

Component Name

Preliminary Procedure

Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

1

Suction Hose Bolt

Caution: Refer to Fastener Caution in the Preface section.

Tighten
9 N·m (80 lb in)

2

Suction Hose Nut

Tighten
9 N·m (80 lb in)

3

Sealing Washer

Tip
Remove and discard sealing washer. Refer to Sealing Washer Replacement.

4

A/C Suction Hose

Suction Hose Replacement LMM

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

    2. Object Number: 652572 Size: SH
  2. Remove the suction hose mounting bolt (3) from the A/C compressor.

    3. Discard the bolt.

  3. Remove the suction hose (1) from the compressor.

    4. Object Number: 363139 Size: SH
  4. Remove the suction hose nut from the accumulator.

    5. Discard the nut.

  5. Remove the suction hose from the accumulator.
  6. Remove the suction hose from the vehicle.
  7. Discard all of the used sealing washers. Cap the system openings.

Installation Procedure
  1. Install the suction hose to the vehicle using new sealing washers.

    2. Object Number: 363139 Size: SH
  2. Install the suction hose to the accumulator.

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the NEW suction hose nut to the accumulator.

    4. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 652572 Size: SH
  4. Install the suction hose to the compressor (1).
  5. Install the NEW suction hose mounting bolt (3).

    6. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

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