Why does my dash say Service 4 Wheel Drive?
Service 4 wheel drive in dash indicator comes on and lights go out on the transfer case switch nob. If I turn off the engine and wait for 10 min. then start truck everything is ok. and I can turn nob to whatever location I want and it will shift. But I can drive for 3 miles or hundreds of miles and the indicator will eventually come on again no matter what position the transfer case is in.
only guessing, but maybe check the fluid level in the case
For anyone that might be interested it turned out to be the actuator. Sometimes it works and sometimes it did not.
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