GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Heat Shield Replacement LAT

Removal Procedure


    Object Number: 1890759  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  2. Disconnect the engine wiring harness electrical connector (1) from the heater coolant pump (2).

  3. Object Number: 1890766  Size: SH
  4. Remove the exhaust manifold heat shield bolt (3) securing the heater coolant pump bracket.
  5. Reposition and secure the heater coolant pump (1) and bracket out of the way.

  6. Object Number: 1890768  Size: SH
  7. Remove the remaining exhaust manifold heat shield bolts (1).
  8. Remove the exhaust manifold heat shield (2).

Installation Procedure


    Object Number: 1890768  Size: SH
  1. Install the exhaust manifold heat shield (2) onto the manifold.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the 2 exhaust manifold heat shield bolts (1) and tighten to 23 N·m (17 lb ft).

  4. Object Number: 1890766  Size: SH

    Note: Ensure that the heater coolant pump bracket tabs (2) are positioned on either side of the heat shield bracket.

  5. Position the heater coolant pump (1) and bracket to the heat shield bracket.
  6. Install the remaining exhaust manifold heat shield bolt (3) and tighten to 23 N·m (17 lb ft).

  7. Object Number: 1890759  Size: SH
  8. Connect the engine wiring harness electrical connector (1) to the heater coolant pump (2).
  9. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.

Exhaust Manifold Heat Shield Replacement LE5 With MH8


Object Number: 2081593  Size: MF

Callout

Component Name

Preliminary procedures

Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement

1

Bolt (Qty 3)

Caution: Refer to Fastener Caution in the Preface section.

Tighten
10 N·m (89 lb in)

2

Exhaust Manifold Heat Shield