Also, the rear back up lights would not function. Today when my husband was driving the car he had shut it off and just for kicks put it in 4 wheel high and it worked!! It is ridiculous that every one tells you that you did not check the oil underneath the truck when the transfer case is all blown out, if they can't put and indicator showing it somewhere it should have a big sign saying this truck you crawl underneath to check oil in some cases every time you chang … e the motor oil. A quick test of the system is to ground the F4 pin, recycle the ignition, and try shifting the transfer case into and out of 4 wheel drive. Some may not and this could lead to unsafe trucks being on the road. Sometimes, it would shift into gear but wouldn't shift from 3rd to 4th engine speed would stay between 2000 and 2500 at 60 mph when it normally would have shifted and dropped to 1500-1800 rpm at that travel speed. C1728 Transfer Case Unable to Transition Between 2H and 4H.
I have replaced many switches and shift cables for this issue, but not many modules. Lift the drive shaft upward, out of the way, and lower the axel housing as far down as it will go. The transfer case fill plug is located on the housing cover. Injector pulse duration is determined by the measured rail pressure and the target injection fuel into each cylinder. When the dealer was contacted, I was told the service department could not look at the problem for 10 days. The dealership reprogrammed the tcm module, but the problem recurred. Then, the engine immediately dropped power.
This happened 5 times currently. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for State of Health monitoring. I believe the temp ratings are different for each. If the operating lever does not move, you have a broken shift cable or it has popped of it's attachments at the operating lever or gear shift handle. I figured this one out today. The speed will dramatically slow to around 15 mph. Trans control modules do go bad.
Thank you for using FixYa, have a nice day. . This pin should be high or 12 volts when in 2 wheel drive, and low or ground when in 4 wheel drive. Fortunately, the cross tube exhaust pipe runs just rear of the bell housing, and I didn't have to disturb the rusted exhaust bolts. I don't know about the 4 wheel drive light blinking, but it could signal trouble in that system, as well, as far as the electronic control of 4 wheel drive or the Transmission Range selector Also, does the transfer case have enough fluid in it? Maybe and lets just leave it at that for now.
While the vehicle was idling at a red light, the contact depressed the accelerator pedal, but the vehicle failed to accelerate. He is figuring out how to get reimbursed and reimburse me. Operating information and commands are exchanged among the modules. It has three connectors two large blue and one small black. It will destroy pets liver in 24 hours if they drink it. The speed will dramatically slow to around 15 mph. If the vehicle is started and driven in 2 hi, the vehicle operates normally.
Also, always ask for any parts that you pay for. The selection switch does not light up. For more information go to. But code have a few others as well. I used an air impact wrench. If the driver attempts to switch the transfer case into any other mode, the transfer case makes noise as it shifts, the service 4x4 light comes on and the newly selected mode indicator light starts to flash.
When this occurred, it rendered the 4 wheel drive inoperative. It was hard to get enough torque on the bolts otherwise with limited access. I used an extention on the air wrench to reach out and avoid interference. Just go ahead and call the phone number at the top of the page and a friendly specialist will help you out. Also the lower coverings will need to be removed as well.
The manufacturer has been contacted, and the customer service department was very unwilling to help or provide the address to the regional office. Sometimes, it would shift into gear but wouldn't shift from 3rd to 4th engine speed would stay between 2000 and 2500 at 60 mph when it normally would have shifted and dropped to 1500-1800 rpm at that travel speed. The bolts were rusted, but a little liquid wrench and the impact driver broke them free. To start viewing messages, select the forum that you want to visit from the selection below. The motor mount brackets never had to completely 'clear' the frame mount brackets.
At first, Chevy service guy thought it might be covered under 5 yr power train warranty, but discovered it wasn't. Takes about 10 minutes to connect the scan tool and diagnose the problem. In this module, the resistor is required to operate near it's limits, and I believe that the conformal coating trapped heat and caused the resistor to fail. I called gm immediately when he came home and they said they would contact me dealership and the best they could do is pay for half of the repair!! This was caused by a failure in the tcm module. Trans control modules do go bad. Some will take advantage of someone stuck and from out of town. At least it happened while we were in a campground where we planned to stay for several days and didn't have to make major changes to our plans.