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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Automatic Transmission - 4L80-E - Service & Replacement) >> Repair Instructions >> Park/Neutral Position Switch Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PNP switch to the manual shaft by aligning the switch hub flats with the manual shaft flats.
  2. Slide the PNP switch onto the 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 PNP Switch & Bolts
    G01952350Courtesy of GENERAL MOTORS CORP.
  4. Position the 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 J 41364-A  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 J 41364-A  from the PNP switch. If installing a new switch, remove the positive assurance bracket at this time.
    Fig 2: Positioning J 41364-A Onto PNP Switch
    G01952351Courtesy of GENERAL MOTORS CORP.
  7. Install the control lever to the manual shaft with the nut.
  8. Install the manual shaft nut.

    Tighten 

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

    Fig 3: Installing Control Lever & Manual Shaft Nut
    G01952352Courtesy of GENERAL MOTORS CORP.
  9. Install the range selector cable end (2) to the range selector lever ball stud (1).
    Fig 4: Installing Range Selector Cable End
    G01952353Courtesy of GENERAL MOTORS CORP.
  10. Connect the PNP switch electrical connectors (5).
  11. If equipped with 4WD, install the front propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - FRONT .
  12. Lower the vehicle.
  13. Check the PNP 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 5: Connecting PNP Switch Electrical Connectors
    G01952354Courtesy of GENERAL MOTORS CORP.
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