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 Pontiac Grand Prix GTFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | 9.00 OZS. | 0.26 L | PAG 150 | S | |||
| Air Cond Refrigerant | 2.40 LBS. | 1.08 KG | R-134a | S | |||
| Automatic Transmission Fluid | Complete Overhaul | 10.00 QTS. | 9.46 L | Automatic Transmission Fluid DEXRON VI | Refer to TSB No. 04-07-30-037C, Date of Issue: April 11, 2007. | S | |
| Automatic Transmission Fluid | Pan Removal and Replacement | 7.40 QTS. | 7 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 | |||
| Engine Coolant | 3.8L Eng | w/Reservoir tank | 11.20 QTS. | 10.59 L | 50/50 mixture of DEX-COOL and clean, drinkable water | After refill, the level must be checked. Add enough engine coolant so that the fluid is within the proper operating range. | S |
| Engine Oil | w/Filter | 4.50 QTS. | 4.25 L | API - SAE 5W-30 | If the temperature range is 0Deg.F (-18Deg.C) or above SAE 10W-30 oil which has the API Starburst symbol is acceptable if SAE 5W 30 oils is not available. Areas where the temperature falls below -20°F (-29°C), it is recommended either an SAE 5W-30 synthetic oil or and SAE 0W-30 oil. Both will provide easier cold starting and better protection for the engine at extremely low temperatures. Do not use other viscosity grade oils, such as SAE 10W-40 or SAE 20W-50 under any conditions. | S | |
| Engine Oil | w/o Filter | 4.00 QTS. | 3.78 L | API - SAE 5W-30 | If the temperature range is 0Deg.F (-18Deg.C) or above SAE 10W-30 oil which has the API Starburst symbol is acceptable if SAE 5W 30 oils is not available. Areas where the temperature falls below -20°F (-29°C), it is recommended either an SAE 5W-30 synthetic oil or and SAE 0W-30 oil. Both will provide easier cold starting and better protection for the engine at extremely low temperatures. Do not use other viscosity grade oils, such as SAE 10W-40 or SAE 20W-50 under any conditions. | S | |
| Fuel Tank | 17.20 GALS. | 65.1 L | S | ||||
| Power Steering Fluid | N/A | N/A | GM Power Steering Fluid | 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.