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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 105 (AUTOMATIC TRANSAXLE SERVICING)LUBRICATIONDRAINING & REFILLING
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Draining & Refilling

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Draining & Refilling
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle and support. Place a drain pan under the transaxle bottom pan in order to catch the fluid.
    NOTE: Removing the bottom pan only partially drains the transaxle fluid. The side cover and the torque converter hold the remaining fluid. To drain fluid from the side cover, remove the drain plug in the case after bottom pan removal. There is no need to drain the torque converter during most service procedures.
  2. Loosen the bottom pan bolts. Drain any fluid in the pan. Remove the bottom pan bolts, pan, and seal. See Fig 1 . Inspect the bottom pan for dents or nicks on the sealing surface. If damaged, replace.
    NOTE: The bottom pan seal is reusable. Replace with a new seal only if sealing surface is damaged.
  3. For proper sealing, clean and dry the bottom pan and the case sealing surfaces. In order to maintain proper bolt torque, the bolts and tapped holes in the case must be clean and dry.
  4. Remove the left and/or right scavenger screens. See Fig 3 . Remove the seals. Use a small screwdriver to pry the seals from the case. Do not score or damage the case.
  5. Install NEW left and right scavenge seals. Install NEW left and right scavenge screens. See Fig 3 .
  6. Install the bottom pan, new seal, and bolts. Finger-tighten the bolts. See Fig 1 .
  7. Tighten the pan bolts 3 times to the proper specification, in the sequence shown. See Fig 2 . Lower the vehicle. Fill transaxle with appropriate fluid to proper level. See RECOMMENDED FLUIDS  and FLUID CAPACITIES  .
Fig 1: Removing & Installing Oil Pan
G00094523Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.