If so, proceed to next step. The wire colors at the actuator should be light blue, and black, is that correct? When I switch to 4wdh the 4wdh light flashes and only that light. It seems like forums for any vehicle tend to turn into a lifesaver for me when it comes to issues with the cars that I've had and this one won't be any different. Thanks Lee Another question would the tps have anything to do with this porblem of 2 much fuel vs air. This is the switch you are talking about.
I wouldunbolt it from the rear u-joint and then pull it out and set itaside. At the end there will be be a spot to stick a wrench on, that's the actuator, just take a crescent wrench and unscrew it out and unplug the wire. Next take off the tire. My problem is when put it in4 wheel there is a problem like a rely in the line or something and not giving the actuator full 12 volts? Put the shifter in 4wd, can you spin the front driveshaft by hand? To make it short the light on the buttons will flash but the front end will not lock in to 4wd. Later I tried to put it back in 4wd and it would not engage. But for example my truck is 11 years old and have never needed to replace the actuator, it always works, and i also have the pushbutton 4wd and never had a problem. I vote for the posi lock.
I also did the same test on the three wires on the top of the transfercase right by the shifter. I recently bought a 1995 Chevy half-ton 4x4 to get me through the unpredictable weather and back roads of Nebraska. Should have full 12 volts at all times key on. Ive checked the 4wd system think the front actuator didnt release but all is fine there aswell as shaft disengagment. Ordered new actuator installed that one did the same thing. Feb 11, 2018 This is something you can do yourself if you have ever worked on a vehicle before. When you are in 2wd sitting at a stop, in park or neutral, and you press four high, do you hear anything, and does the light continuously flash or revert back to 2wd.
I am not certain if this upgraded part and procedure address just the complaint as stated, or if it is necessary in the case of any actuator replacement. If not you probably installed something incorrectly while the axle was removed. They are not flashing any codes it is just a constant flash. First off, this is my first post and probably won't be the last. First off, this is my first post and probably won't be the last. Slide the new pads in.
If this stops the lights from flashing, and you are getting the signal to the actuator, then I would suggest a bad actuator. Transmition Fluid Has The Color Added. The light on the 4H or the 4L will flash on the button that is pressed. The symbol in the actuator shows that it is a coil of wire, or a resistor of some sort. I suggest not removing anything other thanthe set-screw, the peg thing, and the C-clips from inside thatmiddle section.
Dec 31, 2009 Hi my name is Juan and I do own a trailblazer with the same year 2002 and I read the problem you have let me try to help you Have you try to shift to 4hi with your transmission in neutral? The actuator may have been damaged when the axle broke?? When the regulator blows, it dumps raw fuel down into the engine. I would go with what the dealer told you. Then bolt the calipers back on. I believe the case of the actuator is plastic, so if it was shorted to the case it would not find a path to ground. Do any of you have any advice or recommendations? Do any of you have a recommendation for what I should replace it with? Is there an actuator out there that is of better quality and will last longer or would I just be better off going and getting the 4X4 Posi-Lok? If not, replace transfer case switch. I recently bought a 1995 Chevy half-ton 4x4 to get me through the unpredictable weather and back roads of Nebraska.
Had one in my 89 and loved it. Do any of you have a recommendation for what I should replace it with? If the original thermal linear actuator failed on you, you may want to replace it with a mechanical one like the cable operated posi-lok T : Answer. Plus, you can use 2wd lo range. With ignition on, connect test light to ground and backprobe Brown wire terminal at transfer case switch connector. I think that is it.
As for the spacer, I think I pushed that into the opening in the housing before I threaded the new actuator in, but I can't remember for sure. How about four lo, you should definitely hear and feel that shift, as well as the gear reduction, does it continue to flash, or revert back to 2wd. Lift the door upwards and it will come out of the window compartment quite easily. The old thermal design used to wear out quickly and was replaced with a new electric one you need the actuator and an additional harness. There is a bulletin, and a revised schematic, if the new style front axle actuator has been installed. I want something that is going to last a while and be reliable.
From what I've read so far, the posi-lok is pretty reliable but if there's an actuator that is just as reliable and easier to install, why take the time and effort to install the posi-lok right? If it does'nt, then check for power. The entire actuator unit, with the wire running into it, is threaded into a housing on the axle tube. Since 1918, Dorman Products has supplied the automotive aftermarket with high-quality replacement parts, hardware and fasteners. What is keeping my 4wd from activating? I want something that is going to last a while and be reliable. The truck has a seperate shifter for the 4x4.
Replacement brand parts are the most affordable solution for your replacement needs! If test light lights, replace front axle solenoid and proceed to next step. From what I've read so far, the posi-lok is pretty reliable but if there's an actuator that is just as reliable and easier to install, why take the time and effort to install the posi-lok right? Please help we have a big storm on the way Thank you all so much Steve Pull the Accuator out tape 2 lug nuts to the end of the plunger and screw it back in. If so, proceed to next step. There is also 1 splice you have to make I made mine in the cab to keep it protected. I tried the Actuator direct to the battery and it worked fine.