GM Service Manual Online
For 1990-2009 cars only

Engine Mount Replacement - Left Side 1500 w/RPO LY2

Removal Procedure

Caution: When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.


    Object Number: 1701016  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.
  2. If the vehicle is equipped with four wheel drive (4WD), remove the front drive axle. Refer to Differential Carrier Assembly Replacement.
  3. Lower the vehicle.
  4. Remove the generator bracket. Refer to Generator Bracket Replacement.
  5. Remove the engine mount to frame bolts (1).
  6. Raise and support the vehicle halfway. Refer to Lifting and Jacking the Vehicle.
  7. Remove the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.

  8. Object Number: 1710769  Size: SH

    Note: DO NOT raise and/or support the engine by the crankshaft balancer, or oil pan.

  9. Place an adjustable (screw type) jack to the tab (1) located on the engine block.

  10. Object Number: 1701797  Size: SH
  11. Working through the wheelhouse opening, remove the engine mount to engine bolts (1).
  12. Using the adjustable jack, raise the engine slightly until there is enough clearance to remove the engine mount.

  13. Object Number: 1701800  Size: SH
  14. Remove the engine mount.

Installation Procedure


    Object Number: 1701800  Size: SH
  1. Position the engine mount to the engine.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1701797  Size: SH
  3. Working through the wheelhouse opening, install the engine mount to engine bolts (1) and tighten to 50 N·m (37 lb ft).
  4. Using the adjustable jack, lower the engine until the engine mount is sitting flush on the frame.
  5. Remove the adjustable jack from the engine block.

  6. Object Number: 1701016  Size: SH
  7. Install the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.
  8. Lower the vehicle.
  9. Install the engine mount to frame bolts (1) and tighten to 65 N·m (48 lb ft) starting with the middle bolt then either side bolt.
  10. Install the generator bracket. Refer to Generator Bracket Replacement.
  11. If the vehicle is equipped with 4WD, install the front drive axle. Refer to Differential Carrier Assembly Replacement.
  12. Lower the vehicle.
  13. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.

Engine Mount Replacement - Left Side 1500 except RPOs LY2 and LY6

Removal Procedure

Caution: When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.


    Object Number: 1701017  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.
  2. If the vehicle is equipped with four wheel drive (4WD), remove the front drive axle. Refer to Differential Carrier Assembly Replacement.
  3. Lower the vehicle.
  4. Remove the generator bracket. Refer to Generator Bracket Replacement.
  5. Remove the engine mount to frame bolts (1).
  6. Raise and support the vehicle halfway. Refer to Lifting and Jacking the Vehicle.
  7. Remove the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.

  8. Object Number: 1710769  Size: SH

    Note: DO NOT raise and/or support the engine by the crankshaft balancer, or the oil pan.

  9. Place an adjustable (screw type) jack to the tab (1) located on the engine block.

  10. Object Number: 1701533  Size: SH
  11. Working through the wheelhouse opening, remove the engine mount to engine bolts (1).
  12. Using the adjustable jack, raise the engine slightly until there is enough clearance to remove the engine mount.

  13. Object Number: 1701535  Size: SH
  14. Remove the engine mount.

Installation Procedure


    Object Number: 1701535  Size: SH
  1. Position the engine mount to the engine.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1701533  Size: SH
  3. Working through the wheelhouse opening, install the engine mount to engine bolts (1) and tighten to 50 N·m (37 lb ft).
  4. Using the adjustable jack, lower the engine until the engine mount is sitting flush on the frame.
  5. Remove the adjustable jack from the engine block.

  6. Object Number: 1701017  Size: SH
  7. Install the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.
  8. Lower the vehicle.
  9. Install the engine mount to frame bolts (1) and tighten to 65 N·m (48 lb ft) starting with the middle bolt then either side bolt.
  10. Install the generator bracket. Refer to Generator Bracket Replacement.
  11. If the vehicle is equipped with 4WD, install the front drive axle. Refer to Differential Carrier Assembly Replacement.
  12. Lower the vehicle.
  13. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.

Engine Mount Replacement - Left Side 2500 w/RPO LY6

Removal Procedure

Caution: When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.


    Object Number: 1701018  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.
  2. If the vehicle is equipped with four wheel drive (4WD), remove the front drive axle. Refer to Differential Carrier Assembly Replacement.
  3. Lower the vehicle.
  4. Remove the generator bracket. Refer to Generator Bracket Replacement.
  5. Remove the engine mount to frame bolts (1).
  6. Raise and support the vehicle halfway. Refer to Lifting and Jacking the Vehicle.
  7. Remove the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.

  8. Object Number: 1710769  Size: SH

    Note: DO NOT raise and/or support the engine by the crankshaft balancer, or oil pan.

  9. Place an adjustable (screw type) jack to the tab (1) located on the engine block.

  10. Object Number: 1701899  Size: SH
  11. Working through the wheelhouse opening, remove the engine mount to engine bolts (1).
  12. Using the adjustable jack, raise the engine slightly until there is enough clearance to remove the engine mount.

  13. Object Number: 1701901  Size: SH
  14. Remove the engine mount.

Installation Procedure


    Object Number: 1701901  Size: SH
  1. Position the engine mount to the engine.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1701899  Size: SH
  3. Working through the wheelhouse opening, install the engine mount to engine bolts (1) and tighten to 50 N·m (37 lb ft).
  4. Using the adjustable jack, lower the engine until the engine mount is sitting flush on the engine mount bracket.
  5. Remove the adjustable jack from the engine block.

  6. Object Number: 1701018  Size: SH
  7. Install the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side.
  8. Lower the vehicle.
  9. Install the engine mount to frame bolts (1) and tighten the bolts to 65 N·m (48 lb ft) starting with the middle bolt then either side bolt.
  10. Install the generator bracket. Refer to Generator Bracket Replacement.
  11. If the vehicle is equipped with 4WD, install the front drive axle. Refer to Differential Carrier Assembly Replacement.
  12. Lower the vehicle.
  13. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement.