2001 GMC Sierra 1500 Pickup Owner's Manual - Page 105

Starting Your V6 Engine 1. With your foot off the accelerator pedal, turn your ignition key to START. When the engine starts, let go of the key. The idle speed will go down as your engine gets warm. 3. If your engine still won't start (or starts but then stops), wait 15 seconds and start over. When the engine starts, let go of the key and the accelerator pedal. NOTICE: Holding your key in START for longer than 15 seconds at a time will cause your battery to be drained much sooner. And the excessive heat can damage your starter motor. Wait about 15 seconds between each try to help avoid draining your battery or damaging your starter. 2. If it doesn't start within 10 seconds, hold your key in START for not more than 10 seconds. Then, push the accelerator pedal all the way down for five more seconds, unless it starts sooner. NOTICE: Your engine is designed to work with the electronics in your vehicle. If you add electrical parts or accessories, you could change the way the engine operates. Before adding electrical equipment, check with your dealer. If you don't, your engine might not perform properly. 2-22