2001 GMC C3500 HD 8.1 G, AutomaticFACTORY OEM SERVICE PROCEDURE

Quick Lookups: Fluids

FLUID CAPACITIES
Fluid Type Application Standard Metric Fluid Spec Note S/H
Air Cond Refrigerant 2.00 LBS. 0.9 KG R-134a H
Automatic Transmission Fluid 7.70 QTS. 7.28 L Automatic Transmission Fluid DEXRON VI Refer to TSB No. 04-07-30-037C, Date of Issue: April 11, 2007. H
Brake Fluid N/A N/A DOT 3 Brake Fluid H
Differential Gear Oil Dana 80 4.23 QTS. 4 L SAE 75W-140 Synthetic Gear Oil H
Engine Coolant 8.1L Eng 28.50 QTS. 26.97 L 50/50 mixture of DEX-COOL and clean, drinkable water H
Engine Oil 8.1L Eng 6.60 QTS. 6.24 L API - SAE 5W-30 SAE 5W-30 is best for your vehicle. However, use 10W-30 if the outside temperature is higher than 18Deg.C (0Deg.F). Do not use other viscosity oils, such as SAE 20W-50. If your vehicle is operated in an area where the temperature falls below -29Deg.C (-20Deg.F), consider using a SAE 0W-40 oil, it will provide easier cold starting and better protection for the engine at extremely low temperatures. H
Fuel Tank Gas Front 22.00 GALS. 83.27 L H
Fuel Tank Gas Rear 18.00 GALS. 68.13 L H
Manual Transmission Fluid 4.00 QTS. 3.78 L GM Synthetic Manual Transmission Fluid H
Power Steering Fluid 0.87 QTS. 0.82 L GM Power Steering Fluid H
Windshield Washer Fluid N/A N/A Optikleen Windshield Washer Fluid Follow the Manufacturer's Instructions for the mixture ratio. H
Factory Service Tools

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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.

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