Well my only help would be to think it out this way. Test the wire/switch. That being said I do not access to a diagram but a simple tester should do this with Key on as it should only be hot when key is on. You just have to work backwards from the Switch i.e. when does it blow ? If it blows immediately it possible the in the hot wire to the switch or the switch itself. If it blows when the switch is activated it may be the Switch it self or the line through to the light. That is how I'd look at it. Hope I helped.
SOURCE: What model transmission is on my 92 4x4 Suburban 5.7 1500. (350)
Output shaft is generally a different lenght on the 2wd vs the 4wd.
SOURCE: 05 f150 4x4. 4 wheel drive lights come on but it is not engaged?
change actuator in front hub water gets in there freezez and ruber seal rips part only 120.00 bucks not hard to change beat upper ball joint take of spindle nut think it was 5/8 3 bolts in back should fall out
SOURCE: 2005 Ford F150, 5.4L V8, 4x4; The transfer case
Encoder motor located on the transfer case is usually the problem. It is the motor that shifts the transfer case.
Testimonial: "Will look into this and report .Thanks so much"
SOURCE: 1995 gmc yukon wiyh 6.5 diesel 4 wheel drive will
On the full size, the front actuator is electric, not vacuum.
When in 4wd mode, a switch on top of the transfer case conducts 12
volts out to the actuator. Wire #50 (brown) is the 12v feed, and it
conducts to the light blue wire (#900) to the actuator.
When shifted out of 4wd, the switch opens up and no voltage goes to the actuator.
Check voltage at the connector for the front actuator (at the
front differential - it looks like a large bullet that threads into the
front diff.) If it has 12 volts, the actuator is the problem. If it
does not have 12 volts, check the transfer case switch and the power
feed to the transfer case.
I'll assume it is the actuator, if the plug to the actuator is getting 12 volts when in 4wd.
The way this actuator works, is it is a sealed chamber that gets heated
by voltage. When it heats, the pin in the end swells and pushes a shift
fork in the front differential. The shift fork engages a spline on the
passenger side of the differential, and boom! you have 4WD.
GM offered an upgrade to this actuator that is a motor instead of a
heated device. However, it requires a small harness addition, a spacer,
and a new actuator. It is about a $150 to $200 option.
If I were you, I would buy a new heated actuator. They are available at
most auto parts stores, and are about $90. They are also on eBay for
about $55 plus shipping. These are very easy to change - just thread out the old one, and thread in a new one.
Good
luck. The actuator is usually the problem 90% of time but recheck all
of the wire harness just to maker sure there is no short before
replacing any parts.
Testimonial: "This is exactly the info i need to troubleshoot and repair efficiently complete with wire numbers and colors thanks for the help buddy"
SOURCE: 96 tahoe 4x4 not engaging the front wheels
then the seloniod actuator if the front diff may be bad, this is common,heres a diagram to show you what it is and where it is, hope this helps.
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