4 WD service light

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jascbowman

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4 WD service light comes on after about 15 min. of driving in 2 WD (after turning ignition off & restarting it turns on again after 15 min). 4 WD (AWD) works fine when engaged.The scanner shows no error codes. Any suggestions?
 

jascbowman

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1999 Tahoe 4WD service light

Computer diagnostic showed faulty switch.Changed out switch module on dash and it took care of problem.
 
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