Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Chevrolet Chevy Express H2500FACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | w/o Rear AC | 8.00 OZS. | 0.23 L | PAG 46 | S | ||
| Air Cond Compressor Oil | w/Rear A/C | 11.00 OZS. | 0.32 L | PAG 46 | S | ||
| Air Cond Refrigerant | Front & Rear | 3.10 LBS. | 1.4 KG | R-134a | S | ||
| Air Cond Refrigerant | Front | 1.80 LBS. | 0.81 KG | R-134a | S | ||
| Automatic Transmission Fluid | Trans Mfr CD 4L80E/MT1 | After Complete Overhaul | 13.50 QTS. | 12.77 L | Automatic Transmission Fluid DEXRON VI | Refer to TSB No. 04-07-30-037C, Date of Issue: April 11, 2007. | S |
| Automatic Transmission Fluid | Trans Mfr CD 4L80E/MT1 | After Filter/Pan Removal | 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. | S |
| Brake Fluid | N/A | N/A | DOT 3 Brake Fluid | S | |||
| Differential Gear Oil | 7.25" Front Axle | 1.27 QTS. | 1.2 L | SAE 75W-90 Synthetic Gear Oil | S | ||
| Engine Coolant | 5.3L Eng | 13.40 QTS. | 12.68 L | 50/50 mixture of DEX-COOL and clean, drinkable water | S | ||
| Engine Oil | 5.3L Eng | w/Filter | 6.00 QTS. | 5.67 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. | S |
| Fuel Tank | 31.00 GALS. | 117.34 L | S | ||||
| Power Steering Fluid | N/A | N/A | GM Power Steering Fluid | GM Part No. 89021184. | S | ||
| Transfer Case Fluid | 1.50 QTS. | 1.41 L | Automatic Transmission Fluid DEXRON III | S | |||
| Windshield Washer Fluid | N/A | N/A | Optikleen Windshield Washer Fluid | Follow the Manufacturer's Instructions for the mixture ratio. | S | ||
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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