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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1008 (Automatic Transmission - 4L60-E/4L65-E (Introduction, Service & Replacement)) >> Repair Instructions >> Auxiliary Pump Replacement (5.3L Engine w/RPO HP2) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: When the transmission is at operating temperatures, take necessary precautions when removing the drain plug, to avoid being burned by draining fluid.
  1. Raise and suitably support the vehicle. Lifting and Jacking the Vehicle in General Information.
  2. Place a drain pan under the transmission oil pan.
    Fig 1: Draining Transmission
    GM23578Courtesy of GENERAL MOTORS CORP.
  3. Remove the drain plug, if equipped.
  4. If necessary, remove the bolts and position aside the range selector cable bracket for clearance while lowering the pan. It is not necessary to remove the cable from the lever or bracket.
  5. Remove the oil pan bolts from the front and sides of the pan only.
  6. Loosen the rear oil pan bolts approximately 4 turns.
  7. Lightly tap the oil pan with a rubber mallet in order to loosen the pan to allow the fluid to drain.
    8. Fig 2: View Of Oil Pan Bolts
    GM13952Courtesy of GENERAL MOTORS CORP.
  8. Remove the oil pan bolts.
  9. Remove the oil pan and gasket. Discard the old gasket.
    10. Fig 3: Disconnecting The Auxiliary Oil Pump Electrical Connector
    GM1280438Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the auxiliary oil pump electrical connector.
    11. Fig 4: Removing The Auxiliary Oil Pump Bolts
    GM1280443Courtesy of GENERAL MOTORS CORP.
  11. Remove the auxiliary oil pump bolts.
  12. Remove the auxiliary pump.
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