2006 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 118

3. Plug it into a normal, grounded 110-volt AC outlet. Automatic Transmission Operation If your vehicle is has an automatic transmission, it features an electronic shift position indicator within the instrument panel cluster. This display must be powered anytime the shift lever is moved out of PARK (P). See Fuses and Circuit Breakers on page 5-124. There are several different positions for your shift lever. {CAUTION: Plugging the cord into an ungrounded outlet could cause an electrical shock. Also, the wrong kind of extension cord could overheat and cause a fire. You could be seriously injured. Plug the cord into a properly grounded three-prong 110-volt AC outlet. If the cord will not reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 4. Before starting the engine, be sure to unplug and store the cord as it was before to keep it away from moving engine parts. If you do not, it could be damaged. How long should you keep the coolant heater plugged in? The answer depends on the outside temperature, the kind of oil you have, and some other things. Instead of trying to list everything here, we ask that you contact your dealer in the area where you will be parking your vehicle. The dealer can give you the best advice for that particular area. Automatic Transmission Allison Transmission® See "Range Selection Mode" later in this section. 2-24