GM Service Manual Online
For 1990-2009 cars only

C4/C5 Models


Object Number: 829811  Size: A2

C6/C7/C8 Models


Object Number: 829812  Size: A2

Caution: Fuel vapor is highly flammable. It burns violently, and that can cause very bad injuries. Do not smoke if you are near fuel or refueling the vehicle. Keep sparks, flames and smoking materials away from fuel.

The fuel cap can be on either or both sides of your vehicle depending on option content.

To take off the cap, turn it slowly to the left (counterclockwise).

Caution: If you get fuel on yourself and then something ignites it, you could be badly burned. Fuel can spray out on you if you open the fuel cap too quickly. This spray can happen if the tank is nearly full, and is more likely in hot weather. Open the fuel cap slowly and wait for any "hiss" noise to stop. Then unscrew the cap all the way.

When you put the cap back on, turn it to the right (clockwise) until it is tight.

Notice: If you need a new fuel cap, be sure to get the right type. Your dealer/retailer can get one for you. If you get the wrong type, it may not fit properly. This may cause the malfunction indicator lamp to light and may damage the fuel tank and emissions system. See Malfunction Indicator Lamp .

If you have dual tanks, fill the driver's side tank, or forward tank, first. The fuel gage will give better readings this way. Your gage will show the total fuel left in both tanks.