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2001 GMC Sierra 1500 Question: the service 4wheel drive light is on and the lights on the swtich will go on/off



seanmaninger, 5.3L V8, Maple Park, IL, January 18, 2012, 15:01

Have replaced actuator on transfer case, front axle actuator, and the switch on the dash. The front axle breather was against the plug under the hood. Cleaned the grease off and everything worked and went off. Now it all is back on.

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