I have a 1995 gmc sierra and the 4wd is not working. I don't want to just start swapping parts. The right parts installed correctly. We'll fast forward through putting the skid plate on. Make sure you get it straight in. If it were the 4x4 actuator the lights would still illuminate on the selector switch, it just wouldn't engage the 4x4. I received the part, and installation was pretty easy.
More than likely it will be one of those 3 things. Online parts stores like PartsGeek. Obviously, reinstallation is just the reverse. If you light continues to blink but does not engage or takes a long time to engage more than 10 seconds then this actuator is the problem. Sometimes these actuator just plain don't work in extreme cold weather as the gas actually does not get hot enough to expand.
If it hasn't ever been replaced then ther is a updated part it come as a kit witha harness spacer and actuator. This has solved the cold temperature problem. For more information, go to www. No need to waste a part when it's still working well. You just grab onto it and rotate it counterclockwise. Our parts are 100% tested to verify both mechanical and electrical switching performance.
When I push the 4 wheel high or 4 wheel low button the light on the switch just blinks. Age, damage, and lack of consistent use are the most common reasons for these actuators to go bad. A little extra work to install the extra wire but well worth the effort. The front wheels are not locked in as far as I can tell. Our parts are 100% tested to verify both mechanical and electrical switching performance. Make sure they don't go anywhere.
That's going to plug in the same and everything. Pull the front axle actuator. You will probably be able to spin the right tire. I have tried shifting into 4wd Hi at both a standstill and while moving. That switch sends power to the front axle actuator when you try to enagage 4wd inside the truck.
Next, you're going to want to unplug the actuator you're just going to use a little screwdriver, pry up on the little latch and then unplug it. Here's how you can test the actuator. You don't have to pull extremely tight you don't want to strip the plastic threads. Once it gets going, it comes right out. Its on the pass side of the pumpkin, on the extension housing.
I would take it back to whoever did the work on the transmission. Where do I start looking for the problem? It was very easy to install using the online video. Robust design and high grade materials meet the stringent demands of today's service professional. With the case in 2Hi, you should be able to spin the front driveshaft. I then traced the wire to the top of the transfercase and tested both the end of the wire and also where it plugs into the transfer case. The front wheels are not locked in as far as I can tell. Robust design and high grade materials meet the stringent demands of today's service professional.
Not an auto repair expert? By continuing to browse our site you agree to our use of data and cookies. Also, you may have a damaged transfer case. If you have voltage, and the actuator isn't working, it's toast. Many times these actuators are not used for 9-10 months or more during warm weather. I know for a fact that these will throw a service 4x4 code if they are unplugged or shorted. Just so you know the two actuator may be diffrent.
I have disconnected the battery, waited awhile and then reconnected but this has not resolved the issue. This prevents tire scuffing when going around corners and premature wear on internal axle parts. Has two wires connected to it, and a big hex. The differential carrier assembly uses a conventional ring and pinion gear set to transmit the driving force of the engine to the wheels. Now, this is a 2500, so your skid plate may be a little different. The shop might of nicked wire thats grounding out. Back side, near the top.
To check the transfer case, put the truck in 4wd without it running and then crawl underneath and see if you can turn the front shaft by hand. If the switch is ok and the wiring that attaches to it is ok, then you can move up to the axle. Often, these issues can be corrected by substituting aftermarket replacements, which often address defects and problems found in the original factory parts. Hook the wires back up. Now in this truck this one is working fine, so I'm going to reinstall it. Hook the wires back up. The actuator is probably not going to move.