However, the ground fault could be linked back to a voltage drop at the ignition switch. Wire 50 brown is the 12v feed, and it conducts to the light blue wire 900 to the actuator. You will now have access to 2 inverted Torx screws that hold the top column cover in place. Remove or cut these bolts to remove the old mounts. Posted on May 15, 2009 Hi, If you are trying to remove the steering wheel to change the ignition switch, then you may not have to.
The front axle actuator has four circuits connected to it, a front axle feed circuit, front axle ground circuit, front axle control circuit and a front axle switch circuit. When it heats, the pin in the end swells and pushes a shift fork in the front differential. Bottom Line The old, original switch was stuck in the 'on' position which caused the front axle to be engaged regardless if the transfer case was in 4x4 mode or not. Next check the switch on the transfercase connect a continuity tester to the switch and shift the transfercase into 4x4 the stitch should close, if it dose not replace it ifthe switch is functioning properly replace actuator on front axle Mar 01, 2010 On the full size, the front actuator is electric, not vacuum. I replaced the ignition switch and everything worked fine for one month and then the problem reoccurred with errors p1860 p0758 p0753 p0740 and p0785. Heating the end caps with a torch will force the glue out of the side weep holes where it was injected.
Remove the multi function switch if necessary. You then will remove the motor from the truck to make replacing the mounts easier. On January 4, 2008, the service engine light illuminated again and the gears became stuck. If you put the vehicle up on ramps, it will give you ample room to get the job done. It took a little fanagling for me, but i got it.
Now get a Torx bit and a 7mm socket and remove the lower dash panels to get access to the wiring harness. 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. The switch blew about three months ago, and i replaced it with a brand new one, and it blew again, so i am looking for a reason why it keeps blowing on me. The metal brake line is soft enough to form around the head. The 3 vacuum lines will only go on in one position. Check the 4x4 fuse to see if its blown.
Transmission worked ok though so I took the Blazer to a chevy dealership to check it. All power goes out completely, and then returns. Check the vacuum lines on the driverside firewall. However, it requires a small harness addition, a spacer, and a new actuator. With the Transfer Case in 2H, 4H and 4L, there is no difference with the power distribution. Change components which are in poor form to permit your drivetrain to perform with greatest capability or yourself to travel with a confident mind set. How many buttons on the instrument panel 4X4 switch? Try replacing the four wheel drive switch on the dash board.
Go buy an aftermarket remanufactured starter. Remove the large axle nut and loosen the wheel lug nuts. Raise front of vehicle and support safely. I had AutoZone put the code reader on my Blazer, and it said that I have a ground fault in transfer case D. The way this actuator works, is it is a sealed chamber that gets heated by voltage.
The current mileage was 85,465 and failure mileage was 65,000. 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. Put truck in reverse and release park brake. You have a short in one of your wires, on the lock cylinder. Remove the column-to-dash attaching bolts and slowly lower the steering column, making sure that it is supported. Remove actuator and manually engage shifting collar with a screwdriver still does not turn then inner axle is twisted. One thing to be aware of.
If you wish, remove both cables. Errors came up p1860 p0785 and p740 that refer to transmission. Look on the top of the ignition cylinder housing and find the small hole. I'll assume it is the actuator, if the plug to the actuator is getting 12 volts when in 4wd. If it stays on defrost no matter where you put the knob then you have a disconnected or leaking vacuum line to the dash. I purchased a 93 Blazer 4 years ago.