2005 Grand Prix GTP Oil Change Instructions
The 2005 Grand Prix uses the Engine Oil Life System to tell you when to change your engine oil. This system uses engine temperature and revolutions to determine when to notify you when to change the oil--a more sophisticated approach than going by mileage. When the "Change Oil Soon" light first comes on, you have 600 miles to change the oil. Pontiac recommends changing the oil filter at the same time as changing the engine oil.
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Things You'll Need
- Wheel chocks, bricks or rocks
- 2 jack stands, 2 jack screws, or 2 drive-on ramps
- Emergency jack
- Drain pan
- Crescent wrench
- Oil filter wrench
- O-ring
- New drain bolt washer
- Socket wrench
- Rag
- Engine oil filter GM p/n 25010792 ACDelco p/n PF-47
- 4.3 qts. of SAE 5W-30 motor oil meeting GM standard GM6094M
- Funnel
Instructions
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Raise the Front of the Grand Prix
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Jack up the Grand Prix's right or left front side with an emergency jack. Set the emergency brake before you start jacking the car. Block off both sides of the rear tire diagonal to the jack with chocks, rocks or bricks. Position the jack about four inches behind the front wheel well. You may see notches under the car indicating where to put the jack. After jacking up the side, slide a jack stand next to the emergency jack. Lower the emergency jack to set the car on the jack stand. Repeat for the car's other side.
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Alternatively, drive the Grand Prix's front wheels onto two drive-on ramps. Put rubber mats under the ramps in advance, so the car's weight doesn't send the ramps forward during mounting. Don't use ramps on a slope--downhill they could flip, and uphill they could be too steep to mount. Set the Grand Prix's emergency brake after mounting the ramps.
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3
Use jack screws as a third option. They have a jack stand's stability and an emergency jack's adjustability. Position them where the emergency jack would go.
Replacing the Oil
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Idle the Grand Prix's engine in neutral until the radiator fan comes on. (Warmed oil drains more completely.) Turn off the engine. Give the motor oil five minutes to accumulate in the drain pan.
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5
Unscrew the oil refill cap, but don't remove it. (Letting air in helps the oil drain.) The cap is on the engine, in the center, at the very front.
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Slide yourself under the engine. Find the oil drain plug. It's likely the lowest bolt you'll find on the oil tank. To tell it apart from the transmission fluid drain plug, feel the metal around each. The engine oil tank will still feel hot from the engine idling.
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Loosen the oil drain bolt counterclockwise with a wrench. Use a closed-end wrench if it's really tight. Unscrew the bolt manually after placing a drain pan under it. While the oil drains, proceed to Step 5.
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8
Fit the oil filter wrench over the oil filter, which you'll find under the engine. It's a baseball-sized cylinder. Turn the oil filter wrench counterclockwise, preferably using a socket wrench inserted into the oil filter wrench's center hole. Once loosened, it can be screwed off by hand, but keep your face out from underneath--the filter is full of used oil, which can be skin-irritating, hot and even carcinogenic.
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9
Remove the rubber O-ring that sealed the filter to the engine. Wipe away any O-ring residue. Coat both sides of the new O-ring with clean oil, hold it in place against the engine and screw in the new filter. Use engine oil filter GM p/n 25010792 or ACDelco p/n PF-47. When you feel some turning resistance, turn an additional 2/3 revolution with the oil filter wrench. Don't over-tighten; doing so can cause an oil leak. Wait for the oil to drain a full hour before going on to Step 7.
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10
Screw in the drain bolt, preferably with a new washer. In case you have a torque wrench, tighten the bolt to 26 to 29 foot-pounds. Edmunds recommends the washer replacement because they are compressible and wear out fast.
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Pour 4.3 qts. of 5W-30 oil with the API gas-engine starburst symbol into the refill cap opening. Use oil meeting GM standard GM6094M. Use a funnel. Check the dipstick--which is two inches forward of the refill cap--intermittently to make sure you don't overfill. Screw the filler cap back on.
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12
Idle the Grand Prix' engine in neutral until the radiator fan comes on. Check the oil filter and drain bolt for any leaking. Lower the Grand Prix off any supports.
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Reset the Engine Oil Life System after every oil change by pressing the options button on the Driver Information Center (DIC) display until "Engine Oil Monitor" appears, then press the set/reset button.
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Tips & Warnings
Wash used engine oil off your skin with soap and water when you first get the chance. It's a skin irritant and carcinogen.
As Edmunds points out, U.S. law prohibits pouring used motor oil down the drain, into the ground or sewer, or out with the regular garbage. Instead, find a garage or recycling center that will not charge you to drop it off for disposal.
References
- Photo Credit changing the wheel image by Radu Razvan from Fotolia.com
