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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Transmission Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Support the transmission with a transmission jack.
  2. Raise the transmission into place.
  3. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter.
    CAUTION: Refer to FASTENER NOTICE .

    Important: 

    • The torque converter must be flush onto the flywheel and rotate freely by hand.
    • Do not install the transmission fluid fill tube.

  4. Install the bolts that secure the transmission to the engine.

    Tighten 

    Tighten the studs and the bolts to 47 N.m (34 lb ft).

    Fig 1: Installing Transmission Studs & Bolts
    G02424256Courtesy of GENERAL MOTORS CORP.
  5. Install the bolts securing the torque converter to the engine flywheel.

    Tighten  :

    1. First tighten all the bolts finger tight in order to insure proper converter seating.
    2. Tighten the bolts to 63 N.m (46 lb ft).

  6. If equipped with All Wheel Drive (AWD), install the transfer case. Refer to TRANSFER CASE .
    Fig 2: Installing Torque Converter To Engine Flywheel Bolts
    G02424257Courtesy of GENERAL MOTORS CORP.
  7. Install the wiring harness connectors to the vehicle speed sensor and the park neutral position switch.
  8. Position and install all vehicle harness wires, harness clips, tubes, brackets, and lines that were removed or moved prior to the transmission removal.
  9. Install the transmission fluid fill tube and the fill tube seal. Refer to Filler Tube and Seal Replacement .
  10. Install the transmission vent hose and the wiring harness to the transmission.
    Fig 3: Installing Wiring Harness Connectors
    G02424258Courtesy of GENERAL MOTORS CORP.
  11. Install the sight shield.
    Fig 4: Installing Sight Shield
    G02424259Courtesy of GENERAL MOTORS CORP.
  12. Install the starter motor. Refer to STARTER MOTOR REPLACEMENT (4.8L, 5.3L & 6.0L) or STARTER MOTOR REPLACEMENT (4.3L) .
  13. Install the exhaust pipe to the exhaust manifolds and the muffler assembly to the exhaust pipe. Refer to CATALYTIC CONVERTER REPLACEMENT (4.3L) or CATALYTIC CONVERTER REPLACEMENT (DUAL EXHAUST - RIGHT) or CATALYTIC CONVERTER REPLACEMENT (DUAL EXHAUST - LEFT) .
  14. Install the transmission support. Refer to TRANSMISSION SUPPORT REPLACEMENT .
  15. Remove the transmission jack and the engine support stands.
  16. Install the rear propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - ONE PIECE or PROPELLER SHAFT REPLACEMENT - TWO PIECE .
  17. Install the transmission range select cable to the transmission range select lever and the bracket.
  18. Install the transmission oil cooler pipes. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
  19. Flush the transmission oil cooler and the pipes whenever you remove the transmission for overhaul, or replacement of the torque converter, the pump, or the transmission case. Refer to Automatic Transmission Oil Cooler Flushing and Flow Test (J 45096)  or Automatic Transmission Oil Cooler Flushing and Flow Test (J 35944-A)  .
  20. Remove the safety stands.
  21. Lower the vehicle.
  22. Fill the transmission to the proper level using approved fluid.
  23. Connect the battery negative cable assembly to the battery negative terminal.

    Tighten 

    Tighten the terminal bolt to 15 N.m (11 lb ft).

    Fig 5: Installing Transmission Range Select Cable
    G02424260Courtesy of GENERAL MOTORS CORP.
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