Experience says it could be tons of things but it's usually the sensor or motor. One of the most common trouble codes with the Chevy Silverado is the P0442 code. I have a 2004 Sierra 1500 4wd and I am having problems with the 4wd. . This clutch pack is designed to deliver a variable amount of torque, normally delivered to the rear wheels, and transfers it to the front wheels. Especially since they have the Tahoe in their shop already swapping the motor long story.
Torque is ramped up to the front wheels until the front propshaft speed sensor matches that of the rear propshaft speed sensor. There was no need to remove the driveshaft and no need for reprograming afterwards. Disconnect the wiring from the sensor. Now you can remove the encoder motor assembly. This is especially true right after you fuel up. The transfer case shift control module supplies 5 volts on all the channels.
We may not have this issue either. There are a few clips that you need to find and remove. Align the casting and output gear timing marks at the same time you align the two encoder phasing posts, while inserting the shaft into the bushing and verifying that the output gear and the idler gear are engaged properly. And still nothing what fuses are there that control the 4wd. I am just going to call voltage, 12 volts rather than mess with 12. Again, I haven't seen what is exposed myself, but have a strong premonition that if anything is movable inside a hole in the encoder motor, it shouldn't be moved carelessly.
Sep 16, 2018 You'll need to get a good auto electrician to look at this. There is no solid fact behind that caution, other than the clocking mojo that is inside the encoder and front drive line actuators. In an attempt to help keep water out. Look for these values: When the switch is set to 2 Hi, you should see 2. And I tested them on my other 2004 Sierra.
Accelerator Pedal Position Sensor 1 Circuit Low and P2127 - Accelerator Pedal Position Sensor 2 Circuit Low would lead you to suspect a defective accelerator pedal position sensor. I have read where a lot of people have had no luck trying to fix this and the delaers charge big bucks for it. To get them off, you'll need a thin flat bladed screwdriver to pry. I just put the front of the truck on ramps and crawled underneath. These sensors provide a path to ground when a magnet, which is part of the shift rail, passes over them.
The five hours is probably because I'm a musician and not a mechanic! I did not need to get my truck reprogrammed. If you get a flashing light condition for a switch selection, then the problem could be the actuator on the Transfer Case. This is an intermittent problem - it comes and goes. No shifting into 4h or auto 4 on it own. It was just a thought anyhow.
These sensors provide a path to ground when a magnet, which is part of the shift rail, passes over them. The encoder houses 4 Hall effect sensors that are used for channels P, A, B, and C. Engine Code Search Search engine trouble codes. Improper installation of the encoder could result in a repeat failure. Look up the other , please use the search box.
My only suggestion would be to make the location of the gears on the inside of the motor when you have it disassembled. What transfer case does your have? A lot of people say you don't need it reflagged or programmed that's why I switched out the tccm. It's simply removing the motor from the transfer case, removing the motor housing, unplugging the old sensor, plugging the new sensor in, and reinstalling the motor. I told them not to do the repair, that I wanted to do some research on it before proceeding. Thats a pretty hard thing to guess at when you can't make it happen. I opened up the old sensor and found some oil in it, my shift shaft seal is leaking just enough to drip into the sensor and cause this problem.