1994 GMC Jimmy Owner's Manual - Page 88

3. 4 LO: This setting also engages your front axle to give extra you traction. You may never need4 LO. It sends the maximum power to all four wheels. You might choose 4 LO if you were driving off-road in sand, mud,deep snow and climbing or descending steep hills. Indicator lights in the switch show which setting you arein. Both you indicator lights will come on briefly when you turn on the ignition. If both lights do not come on, you should take your vehicle in for service. 4 HI The position hasa green indicator light and the LO position hasan amber 4 indicator light. When shifting, indicator light will flash until the shift an is completed then remain solidly lit. Two-wheel drive, (2 WHEEL), does not havea switch position or an indicator light.Your vehicle will be two wheel drive if neither indicator in light is on. To shift from two-wheel drive,(2 WHEEL) to4 HI: Press and release the 4 HI switch. This can bedone at any speed, and the front axle will lock automatically. To shift from 4 HI to two-wheel drive WHEEL): Press and release the (2 4 HI switch. This can be done at any speed, and the front axle will unlock automatically. To shift from two-wheel drive WHEEL) to4 LO: The vehicle mustbe (2 3 " stopped or moving less than mph (4.8 kmh) with the transmission in N ' (Neutral) or the clutch pedal depressed. preferred methodfor shifting The into 4 LO is to have your vehicle slowly moving one-to-two mph (1.6 to 3.2 km/h). Press and release the LO switch. You must wait for the amber 4 4 LO indicator light to stop flashing and go solid before shifting your amber transmission into gear or releasing the clutch pedal. If the 4 LO switch is pressed when your vehicle is in gear and/or moving, for complete the amber 4 LO indicator light will flash 30 seconds and not the shift unless your vehicle is below 3 mph (4.8 k m h ) and the transmission is in "N" (Neutral) or the clutch pedal depressed. On automatic transmission equipped vehicles: your transfer case If does not shift into4 LO, your transmission indicator switch may require adjustment. With your transmissionin " N ' (Neutral), press and release the LO 4 switch. While the amber4 LO indicator light is flashing, shift your transmission intoP (Park). 2-34