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Open your driver door look on side of dash see triangle plastic cover remove fuses behind that cover also look under hood back on drivers side square black box has fuses in it too
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Sounds like the problem that I had with my '94 chev sub k1500, twice!
The first time it was due to a blown fuse. Now I carry a spare 20A fuse when I go off-road.
The second time the electrically controlled/heated, fluid filled actuator mounted on the front diff failed. I now carry a spare actuator when I go off-road.
the actuator is powered when the switch on the top of the transmission is energized. I have had no problems with that switch, or the connecting wiring.
This not a fuse problem. When you switch to A4WD or 4HI, do the indicator light for those positions stay on solid or do they blink and then return to 2HI position? If so, then there is probably a problem with the transfer case actuator/motor.
Check the fuse to the 4x4, if the fuse is good then check the 4x4
electric motor actuator on the transfer case. You should hear it work
from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if
you don't hear it working then check the wire harness at the actuator
motor, look for any damages like corrosion or cracked wire connector
clips. If the 4x4 actuator is working on the transfer case, then the
front hub 4x4 actuator may have gone bad and that's located on the
front differential. It's common for the clip there to corrode and break
and is an easy fix with a new collar pin, at worst it's the diaphragm
on the vacuum actuator that is located under the battery tray. There is
a vacuum switch on the top of the transfer case, driver side but when
that fails, your front hub stay's locked in the on position. Good luck
and keep me posted and hope it's a simple fuse that has gone bad. You
can pick up all these parts at Auto Zone or Parts Source and they will
have the step by step instructions for you to get the job done with
common tools.
Check the fuse to the 4x4, if the fuse is good then check the 4x4
electric motor actuator on the transfer case. You should hear it work
from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if
you don't hear it working then check the wire harness at the actuator
motor, look for any damages like corrosion or cracked wire connector
clips. If the 4x4 actuator is working on the transfer case, then the
front hub 4x4 actuator may have gone bad and that's located on the
front differential. It's common for the clip there to corrode and break
and is an easy fix with a new collar pin, at worst it's the diaphragm
on the vacuum actuator that is located under the battery tray. There is
a vacuum switch on the top of the transfer case, driver side but when
that fails, your front hub stay's locked in the on position. Good luck
and keep me posted and hope it's a simple fuse that has gone bad. You
can pick up all these parts at Auto Zone or Parts Source and they will
have the step by step instructions for you to get the job done with
common tools.
Check the fuse to the 4x4, if the fuse is good then check the 4x4
electric motor actuator on the transfer case. You should hear it work
from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if
you don't hear it working then check the wire harness at the actuator
motor, look for any damages like corrosion or cracked wire connector
clips. If the 4x4 actuator is working on the transfer case, then the
front hub 4x4 actuator may have gone bad and that's located on the
front differential. It's common for the clip there to corrode and break
and is an easy fix with a new collar pin, at worst it's the diaphragm
on the vacuum actuator that is located under the battery tray. There is
a vacuum switch on the top of the transfer case, driver side but when
that fails, your front hub stay's locked in the on position. Good luck
and keep me posted and hope it's a simple fuse that has gone bad. You
can pick up all these parts at Auto Zone or Parts Source and they will
have the step by step instructions for you to get the job done with
common tools.
Check the fuse to the 4x4, if the fuse is good then check the 4x4
electric motor actuator on the transfer case. You should hear it work
from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if
you don't hear it working then check the wire harness at the actuator
motor, look for any damages like corrosion or cracked wire connector
clips. If the 4x4 actuator is working on the transfer case, then the
front hub 4x4 actuator may have gone bad and that's located on the
front differential. It's common for the clip there to corrode and break
and is an easy fix with a new collar pin, at worst it's the diaphragm
on the vacuum actuator that is located under the battery tray. There is
a vacuum switch on the top of the transfer case, driver side but when
that fails, your front hub stay's locked in the on position. Good luck
and keep me posted and hope it's a simple fuse that has gone bad. You
can pick up all these parts at Auto Zone or Parts Source and they will
have the step by step instructions for you to get the job done with
common tools.
Check the fuse to the 4x4, if the fuse is good then check the 4x4
electric motor actuator on the transfer case. You should hear it work
from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if
you don't hear it working then check the wire harness at the actuator
motor, look for any damages like corrosion or cracked wire connector
clips. If the 4x4 actuator is working on the transfer case, then the
front hub 4x4 actuator may have gone bad and that's located on the
front differential. It's common for the clip there to corrode and break
and is an easy fix with a new collar pin, at worst it's the diaphragm
on the vacuum actuator that is located under the battery tray. There is
a vacuum switch on the top of the transfer case, driver side but when
that fails, your front hub stay's locked in the on position. Good luck
and keep me posted and hope it's a simple fuse that has gone bad. You
can pick up all these parts at Auto Zone or Parts Source and they will
have the step by step instructions for you to get the job done with
common tools.
there is a vacuum actuator under the battery it could be leaking vacuum. There is also an electric actuator on some models found in the same place. There is a cable that runs from the actuator to the front differential that locks it in. Make sure you have vacuum and the actuator is pulling the cable when 4x4 is engaged. hope this info helps.
Check the fuse to the 4x4, if the fuse is good then check the 4x4 electric motor actuator on the transfer case. You should hear it work from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if you don't hear it working then check the wire harness at the actuator motor, look for any damages like corrosion or cracked wire connector clips. If the 4x4 actuator is working on the transfer case, then the front hub 4x4 actuator may have gone bad and that's located on the front differential. It's common for the clip there to corrode and break and is an easy fix with a new collar pin, at worst it's the diaphragm on the vacuum actuator that is located under the battery tray. There is a vacuum switch on the top of the transfer case, driver side but when that fails, your front hub stay's locked in the on position. Good luck and keep me posted and hope it's a simple fuse that has gone bad. You can pick up all these parts at Auto Zone or Parts Source and they will have the step by step instructions for you to get the job done with common tools.
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