I have a 1993 z71 extenda cab 4wd with a rebuilt engine converted to a 350. MY 4 Wheel drive is not working it seems to try to lock in but doesn't . I've heard of it being a vacume line or fluid?

Asked by Apr 04, 2015 at 02:54 PM about the 1999 Chevrolet Silverado 1500

Question type: Maintenance & Repair

Automatic and has 230,000 on body  
TRUCK IS 1993

2 Answers

7,255

Sounds like the electronic shift actuator on the front axle has failed, it's common

90

Or even the switch depending on push button or lever

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