Is the transfer case controlled by the shifter?
This can be done with gears, hydraulics, or chain drive. On some vehicles, such as four-wheel-drive trucks or vehicles intended for off-road use, this feature is controlled by the driver. This is sometimes accomplished by means of a shifter, similar to that in a manual transmission.
What is a transfer case shift control module?
The Transfer Case Control Module (TCCM) is the brain behind the electronically shifted GM 4WD systems. The TCCM processes the shift request from the dash mounted mode selector buttons, executes the shift, and verifies the shift was completed.
When to use transfer case shift control module?
If no buttons are pressed, and the transfer case shift control module detects a voltage level outside the possible range (approx. 0.5-1.0 volts) for longer than 5 minutes, the transfer case shift control module will set this DTC if a button is held down or sticks for a period longer than 5 min- utes.
How does the transfer case mod-Ule work?
mode control is a set of normally open switches that vary the voltage supplied by the transfer case module when closed. The transfer case mod- ule sends 8 volts to the switches, then monitors the return circuit to deter- mine whether any of the switches is depressed.
How do you remove a fuse from a car?
If a fuse blows again contact a qualified service center. The fuse block access door is on the driver’s side edge of the instrument panel. Pull off the cover to access the fuse block. To remove fuses, hold the end of the fuse between your thumb and index finger and pull straight out.
What is mode control on GM transfer case?
The dash buttons to the right of the air vent identify this system as an NVG 246 automatic two-speed, which means it has DTCs and scan tool capabilities. mode control is a set of normally open switches that vary the voltage supplied by the transfer case module when closed.