2010 Hummer H3 Owner's Manual - Page 352

10-86 Vehicle Care After installing the spare tire on your vehicle, you should stop as soon as possible and make sure the spare is correctly inflated. The spare tire does not have a Tire Pressure Monitor System sensor. You may get a low pressure warning light. See Tire Pressure Monitor Operation on page 10‑53. Have the damaged or flat road tire repaired or replaced as soon as you can. Do not mix tires and wheels of different sizes, because they will not fit. Keep your spare tire and its wheel together. Jump Starting If the vehicle's battery has run down, you may want to use another vehicle and some jumper cables to start your vehicle. Be sure to use the following steps to do it safely. Notice: Ignoring these steps could result in costly damage to the vehicle that would not be covered by the warranty. Trying to start the vehicle by pushing or pulling it will not work, and it could damage the vehicle. 1. Check the other vehicle. It must have a 12‐volt battery with a negative ground system. Notice: If the other vehicle's system is not a 12-volt system with a negative ground, both vehicles can be damaged. Only use vehicles with 12-volt systems with negative grounds to jump start your vehicle. 2. Get the vehicles close enough so the jumper cables can reach, but be sure the vehicles are not touching each other. If they are, it could cause a ground connection you do not want. { WARNING Batteries can hurt you. They can be dangerous because: . They contain acid that can burn you. They contain gas that can explode or ignite. They contain enough electricity to burn you. . . If you do not follow these steps exactly, some or all of these things can hurt you.