GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Silverado - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Glow Plug Control Module Replacement

Removal Procedure

    Object Number: 1873210 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Disconnect the positive battery cable (1) from the glow plug control module.
  3. Disconnect the engine wiring harness electrical connector (2) from the glow plug control module.

    4. Object Number: 1873211 Size: SH
  4. Remove the glow plug control module bolts and module.

    5. Object Number: 1872344 Size: SH
  5. Remove the fuel return pipe clamp bolt (1).

    6. Object Number: 1873212 Size: SH
  6. Remove the glow plug control module protector bolts and protector (1), if required.
  7. Remove the glow plug control module bracket and bolts (2), if required.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1873212 Size: SH
  1. Position the glow plug control module bracket (2) to the lower valve rocker arm cover and install the bolts, if required.

    2. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  2. Position the glow plug control module protector (1) and install the bolts, if required.

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1872344 Size: SH
  3. Install the fuel return pipe clamp bolt (1).

    4. Tighten
    Tighten the bolt to 24 N·m (18 lb ft).


    Object Number: 1873211 Size: SH
  4. Position the glow plug control module onto the bracket and install the bolts.

    5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1873210 Size: SH
  5. Connect the engine wiring harness electrical connector (2) to the glow plug control module.
  6. Connect the positive battery cable (1) to the glow plug control module.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  8. If a NEW glow plug control module was installed, program the module. Refer to Control Module References .