GM Service Manual Online
For 1990-2009 cars only

Air Conditioning Compressor Replacement LY7


Object Number: 1772425  Size: MF

Callout

Component Name

Preliminary Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Remove the right front fender liner. Refer to Front Fender Liner Replacement .
  5. Disconnect the A/C compressor electrical connector.

1

A/C Compressor Hose Nut

Tip
Remove the A/C compressor hose from the A/C compressor and cap hose.

Notice: Refer to Fastener Notice in the Preface section.

Tighten
20 N·m (15 lb ft)

2

Sealing Washer (Qty: 2)

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

3

A/C Compressor Nut

Tip
Tighten the A/C compressor mounting bolts and nut in sequence.

Tighten
50 N·m (37 lb ft)

4

A/C Compressor Bolt (Qty: 2)

Tighten
50 N·m (37 lb ft)

5

A/C Compressor Assembly

Procedure

  1. Use a low viscosity, poly-alkylene glycol (PAG) oil. Use of the incorrect oil can result in compressor failure.
  2. When replacing the A/C compressor, balance the compressor. Refer to Air Conditioning Compressor Oil Balancing .
  3. Using J 39400 leak test A/C compressor fittings.

Air Conditioning Compressor Replacement LAT


Object Number: 1841791  Size: MF

Callout

Component Name

Preliminary Procedures

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Remove the right engine splash shield. Refer to Engine Splash Shield Replacement - Right Side .
  5. Remove drive belt tensior. Refer to Drive Belt Tensioner Replacement
  6. Disconnect the A/C compressor electrical connector.
  7. Remove compressor hose assembly. Refer to Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement .

1

A/C Compressor Bolt (Qty: 3)

Notice: Refer to Fastener Notice in the Preface section.

Tip
Tighten the A/C compressor mounting bolts in sequence shown in graphic.

Tighten
50 N·m (37 lb ft)

2

A/C Compressor Assembly

Procedure

  1. Use a low viscosity, poly-alkylene glycol (PAG) oil. Use of the incorrect oil can result in compressor failure.
  2. When replacing the A/C compressor, balance the compressor oil. Refer to Air Conditioning Compressor Oil Balancing .
  3. Using J 39400 leak test A/C compressor fittings.