What fluid does a 2000 Chevy Silverado transfer case take?
The standard fill for most 2000 Chevy Silverado transfer cases is Dexron II or Dexron III automatic transmission fluid (ATF).
In practice, many GM transfer cases from this era are built to accept Dexron II/III ATF. Some service literature and modern practice allow Dexron VI as a substitute, but you should verify compatibility with your specific transfer case model (often NV246/NP246) by checking the owner’s manual or a GM service bulletin. Using the correct GM-spec ATF helps ensure proper engagement of the 4WD system and protects bearings and gears over time.
Fluid specification for the 2000 Silverado transfer case
Here are the common fluid options and considerations for servicing the transfer case in a 2000 Silverado. This list highlights what you’re most likely to encounter and what to use as a baseline.
- Dexron II or Dexron III Automatic Transmission Fluid (ATF) — the traditional and widely recommended specification for these transfer cases.
- Dexron VI Automatic Transmission Fluid (ATF) — a newer, backward-compatible option used in some GM components; confirm compatibility with your exact transfer case before use.
Using the GM-spec ATF (Dexron II/III, with Dexron VI as an approved alternative where documented) helps maintain proper lube film, shift behavior, and cooling within the transfer case. If in doubt, consult the owner's manual or a GM dealership for the precise specification for your model and build date.
How to identify the transfer case model and service it
Identify the transfer case model
The exact fluid capacity and fill procedure can vary by transfer case model (common GM units around 2000 include NV246/NP246 family). To avoid guessing, locate the transfer case model code on a tag or stamping on the case itself or check the glovebox/owner materials for your truck’s original drivetrain specification. If you’re unsure, use the manual or a trusted repair guide for your VIN and model suffix.
Steps to check and change the transfer case fluid
Before you begin a service, review the steps below to ensure you’re using the correct fluid and procedures for your vehicle.
- Warm up the vehicle briefly to circulating temperature so the fluid flows easily, then park on a level surface and set the parking brake.
- Safely lift and support the front of the truck if needed to access the transfer case drain and fill plugs.
- Locate the transfer case fill plug and the drain plug (typical GM cases have a fill plug on the case side and a drain plug on the bottom).
- If performing a drain-and-fill, remove the fill plug first to ensure it isn’t seized, then remove the drain plug to drain old fluid into a container.
- Reinstall the drain plug and clean the area, then add the recommended Dexron II/III ATF (or Dexron VI if approved) through the fill hole until fluid begins to seep out of the fill plug opening.
- Reinstall the fill plug securely, lower the vehicle, and run the transfer case through its four-wheel-drive ranges (2H/4H/4L) with the transmission in neutral to circulate the new fluid.
- Check for leaks around plugs and on the driveway after a short test drive and recheck fluid level if needed.
Capacity can vary by model; many common configurations hold roughly 1–3 quarts of ATF for a drain-and-fill, but always verify with the service manual for your exact transfer case code and fill procedure.
Summary
For a 2000 Chevy Silverado, the typical transfer case fluid is Dexron II or Dexron III ATF, with Dexron VI as a modern alternative where approved by GM for your specific model. Identify your transfer case model to confirm capacity and exact procedures. When in doubt, follow the owner’s manual or consult a GM dealer or qualified shop to ensure you use the correct fluid and fill method, preserving 4WD performance and component longevity.
