Question about 1991 GMC S-15 Jimmy
One day it worked, next day it didn't. Was told that something on top may have rusted thru or a hose may have come off, but with out a diagram I don't know where to look
Several places to check first one is the vac line on the ball mounted to your hood. if its ok then under the truck on the transfercase is the vac switch disconnect it and check for vac.. if you have it put vac line to actuator its uner the right innerfender it controls the front diff lock.. if its functioning then you just ned to replace the vac swithc in the transfercase its just screwed in.. the lines to the 4x4 system are plastic and rubber mostly..
Posted on Jan 20, 2009
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Posted on Jan 02, 2017
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