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Home >> Chevrolet >> 2008 >> HHR LS, Automatic >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transaxle - 4T45-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Repair Instructions - On Vehicle >> Control Valve Body Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Removing & Installing Control Valve Body Assembly
    GM1776844Courtesy of GENERAL MOTORS CORP.
  1. Install the control valve body onto the spacer plate (90) assembly.
  2. Fig 2: Identifying 4 Pressure Switch O-Rings
    GM1205824Courtesy of GENERAL MOTORS CORP.
  3. Inspect the transmission fluid pressure (TFP) switch assembly (13) in order to verify the condition and correct location of the 4 pressure switch O-rings.
  4. If necessary replace the pressure switch O-rings.
  5. Fig 3: Locating TFP Switch Assembly
    GM1205810Courtesy of GENERAL MOTORS CORP.
  6. Install the TFP switch assembly (13) onto the control valve body assembly.
  7. Fig 4: Installing Control Valve Body Assembly Bolts
    GM1205826Courtesy of GENERAL MOTORS CORP.
  8. Install the eighteen control valve body assembly bolts.
  9. Fig 5: View Of Control Valve Body Assembly Bolts
    GM20876Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  10. Hand start the bolts.

    Tighten:  Tighten the bolts to 14 N.m (124 lb in).

  11. Install the transmission side cover. Refer to Control Valve Body Cover Replacement .
  12. IMPORTANT: It is recommended that transmission adaptive pressure (TAP) information be reset.
    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM), powertrain control module (PCM), or transmission control module (TCM) will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.
  13. Reset the TAP values. Refer to Transmission Adaptive Functions .