1996 GMC Sonoma Owner's Manual - Page 62

4. After you've used the coolant heater, be sure to store the cord as it was before to keep it away from moving engine parts. If you don't, it could be damaged. Automatic Transmission Operation 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 GM dealer in the area where you'll be parking your vehicle. The dealer can give you the best advice for that particular area. P R N D D 21 There are several different positions for your shift lever. If your vehicle is equipped with an automatic transmission, it features an electronic shift position indicator within the instrument cluster. This display must be powered anytime the shift lever is capable of being moved out of the PARK (P) position. This means that if your key is in the OFF position, but not locked, there will be a small current drain on your battery which could discharge your battery over a period of time. If you need to leave your key in the ignition in the OFF position for an extended period, it is recommended that you disconnect the battery cable from the battery to prevent discharging your battery. PARK (P): This locks your rear wheels. It's the best position to use when you start your engine because your vehicle can't move easily. 2-14