GM Service Manual Online
For 1990-2009 cars only

Accessory Drive Belts Replacement VIN 1

Removal Procedure

The supercharged 3800 engine utilizes two accessory drive belts. The outer belt drives the supercharger. The inner belt drives the following components:

    • Generator
    • Power steering pump
    • Coolant pump
    • Air conditioning compressor

All driven accessories rigidly mount to the engine. Spring-loaded belt tensioners maintain the drive belt tension. Each belt has its own tensioner.

A belt squeak, occurring when the engine starts or stops, is normal and has no effect on the durability of the belt.

The drive-belt tensioner can control the belt tension over a broad range of belt lengths, due to stretching. However, there are limits to the tensioner's compensation ability. Poor tension control and/or damage to the tensioner may occur after using the tensioner outside of its operating range. Replace the belt when this occurs.


    Object Number: 49787  Size: SH
  1. Raise the vehicle.
  2. Remove the right-hand splash shield.
  3. Remove the connector from the crank sensor. Refer to Engine Mount Replacement in order to remove the following components:
  4. 3.1. The engine mounting bracket lower nut.
    3.2. The engine mounting bracket lower stud.
    3.3. The engine mounting bracket lower spacer.
  5. Lower the vehicle.
  6. Remove the belt(s).

Installation Procedure


    Object Number: 49787  Size: SH
  1. Install the belt(s).
  2. Raise the vehicle.
  3. Install the following components. Refer to Engine Mount Replacement .
  4. • The engine mounting bracket lower spacer.
    • The engine mounting bracket lower stud.
    • The engine mounting bracket lower nut.
  5. Install the connector to the crank sensor.
  6. Install the right-hand splash shield.
  7. Lower the vehicle.

Accessory Drive Belts Replacement VIN K

Removal Procedure

The accessory drive belt controls all engine-mounted accessories. All driven accessories rigidly mount to the engine. A spring-loaded belt tensioner maintains the drive belt tension. A belt squeak, occurring when starting or stopping the engine, it has not effect on belt durability. The drive belt tensioner can control the belt tension over a broad range of belt length. However, there are limits to the tensioner's compensation ability. When using the tensioner outside of its operating range, poor tension control and/or damage to the tensioner may occur.

  1. Remove the following components. Refer to Engine Mount Replacement .
  2. 1.1. The engine mounting bracket lower nut.
    1.2. The engine mounting bracket lower stud.
    1.3. The engine mounting bracket lower spacer.

    Object Number: 43400  Size: SH
  3. Remove the belt.

Installation Procedure


    Object Number: 43400  Size: SH
  1. Install the belt. Refer to Engine Mount Replacement in order to install the following components:
  2. • The engine mounting bracket lower nut.
    • The engine mounting bracket lower stud.
    • The engine mounting bracket lower spacer.