To find the correct torque specification:
1. Consult your owner's manual: This is the most reliable source. The torque specification will be listed in a section on tire changing or wheel maintenance.
2. Check the sticker on the driver's side doorjamb: Sometimes, tire information, including recommended lug nut torque, is listed on a sticker in the driver's side doorjamb.
3. Use a reliable online resource: Websites like RepairPal or your vehicle's specific repair manual site (often available through a paid subscription) might provide the information. Be very careful to ensure the website and information are specific to your *year and model* of Grand Am.
4. Consult a qualified mechanic: If you can't find the information, a mechanic will know the correct torque for your specific vehicle.
Using the wrong torque can be dangerous. Over-tightening can damage the wheel studs or lug nuts, while under-tightening can cause the wheel to come loose while driving. Always use a torque wrench to ensure accurate tightening.