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I’ve got a 1998 GMC Jimmy SLE 4×4 4dr and the 4×4 10 amp fuse keeps blowing. The other symptoms: Fule gauge reads empty and the battery light is on.
After doing some research I found that by disengaging the vacuum line on the actuator under the battery plate the fuse will stop blowing. I can confirm that this works, however, I’m not sure what to do next. Some say change the vacuum switch on the T-Case and other’s say trace the electrical lines to verify that there is not a frayed wire grounding out.
Could the vacuum switch cause 4wd to engage, thus overloading the control motor and blowing the 4wd fuse?
Just looking for ideas here before replacing $35 to $150 switches. I would love to get some help from the professionals here so any directions will be greatly appreciated.
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