GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Colorado Pickup - 2WD 🢒 HVAC 🢒 HVAC - Manual 🢒 Evaporator Air Temperature Sensor Replacement

Removal Procedure
  1. Remove the radio. Refer to Radio Replacement .
  2. Remove the mounting screw from the evaporator temperature control module.
  3. Disconnect the electrical connector from the control module.
  4. Cut the evaporator temperature sensor wire near the control module.

    5. Object Number: 1679187 Size: SH

    Important: 

       • Note the mounting position of the evaporative temperature sensor (a, b) and use these measurements upon installation.
       • If you are replacing only the control module, proceed to Step 4 of the Installation Procedure.

  5. Remove the evaporator core. Refer to Air Conditioning Evaporator Core Replacement .
  6. Using needle nose pliers, carefully remove the evaporator temperature sensor from the evaporator core.

Installation Procedure

    Object Number: 1679187 Size: SH
  1. Install the evaporator temperature sensor to the evaporator core. Place the sensor approximately 3.5 cm (1.4 in) from the side (a) and 5 cm (2 in) from the bottom (b) corner of the evaporator core.

    2. Important: Improper wire alignment will pinch and may cut the sensor wires.

  2. Align the evaporator temperature sensor wires with the opening in the upper HVAC module case.
  3. Install the evaporator core. Refer to Air Conditioning Evaporator Core Replacement .
  4. Cut the evaporator temperature sensor from the replacement assembly.
  5. Connect the original sensor wire to the replacement assembly. Refer to Splicing Copper Wire Using Splice Sleeves .
  6. Connect the electrical connector to the evaporator temperature control module.

    7. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the mounting screw to the control module.

    8. Tighten
    Tighten the screw to 1.9 N·m (17 lb in).

  8. Install the radio. Refer to Radio Replacement .