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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1625 (Automatic Transmission - 4L60-E - Service, Removal & Installation) >> Repair Instructions >> Park/Neutral Position Switch Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PNP switch to the transmission manual shaft by aligning the switch hub flats with the manual shaft flats.
  2. Slide the PNP switch onto the transmission manual shaft until the switch mounting bracket contacts the mounting bosses on the transmission.
    IMPORTANT: If a NEW PNP switch is being installed, the switch will come with a positive assurance bracket. The positive assurance bracket aligns the new switch in its proper position for installation and the use of the park neutral switch aligner will not be necessary.
  3. Install the PNP switch bolts finger tight.
    Fig 1: Installing Manual Shaft Lever Nut
    G01953534Courtesy of GENERAL MOTORS CORP.
  4. Install J 41364-A  onto the PNP switch. Ensure that the two slots on the switch where the manual shaft is inserted are lined up with the lower two tabs on the tool.
    NOTE: Refer to FASTENER NOTICE .
  5. Rotate the tool until the upper locator pin on the tool is lined up with the slot on the top of the switch.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

  6. Remove the J 41364-A  from the switch. If installing a new switch, remove the positive assurance bracket at this time.
    Fig 2: Removing J 41364-A From Switch
    G01953535Courtesy of GENERAL MOTORS CORP.
  7. Install the transmission control lever to the manual shaft with the nut.

    Tighten 

    Tighten the nut to 25 N.m (18 lb ft).

    Fig 3: Installing Transmission Control Lever To Manual Shaft
    G01953536Courtesy of GENERAL MOTORS CORP.
  8. Connect the PNP switch electrical connectors (2).
  9. If equipped with 4WD, install the front propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - FRONT .
  10. Lower the vehicle.
  11. Check the switch for proper operation. The engine must start in the park (P) or neutral (N) positions only. If proper operation of the switch can not be obtained, replace the switch.
    Fig 4: Connecting PNP Switch Electrical Connectors
    G01953537Courtesy of GENERAL MOTORS CORP.
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