How to reset transfer case control module

How do I know if my transfer case control module is bad?

What are the Symptoms of a Bad Transfer Case?
  1. Shifting Issues. …
  2. Hard to stay in 4WD? …
  3. 4WD Won’t Engage or Disengage. …
  4. Fluid Puddle Under the Transfer Case’s Location. …
  5. Strange Grinding, Growling or Humming Noises. …
  6. Possible Causes of a Bad Transfer Case. …
  7. So why S&G?

Where is Transfer Case Control Module?

The transfer case control module is located on the driver side dash, on the steering column.

How do I wake up Tccm?

Remove the underhood TCCM fuse (labeled ATCM or TREC). Wait 30 seconds and then reinstall the fuse. This should “wake up” and communicate with Tech 2.

How do you clear a 4WD Service Code?

How To Clear Service 4wd Light – Step by step guide
  1. Step 1 : Inspect your service forward light. …
  2. Step 2 : Remove the dash bezel and knee bolster. …
  3. Step 3 : Pull-on switch assembly. …
  4. Step 4 : Unplugging transfer case control module. …
  5. Step 5 : Undo the negative cable on battery.

How do I know if my 4WD actuator is bad?

You will know your 4WD actuator is bad when the 4WD (either 4H or 4L) becomes difficult to engage, gets stuck, or fails to activate. Any of these symptoms means that your actuator is faulty and it should be checked immediately.

How much does a transmission control module cost?

The replacement cost of a transmission control module will be anywhere from $500 to $900. You can expect the parts costs to be around $450 to $700 while the labor costs will be around $50 to $200.

How do I reset my 4×4?

Is it OK to drive with service 4WD light on?

The 4WD switch light will indicate 2WD or Auto when drive engaged. … Cause: If the light stays on, or the “Service 4WD System” message is displayed, there is a problem with the 4WD system. The “Service 4WD System” message does not mean routine maintenance of the 4WD system is required.

Why is 4WD light on?

When the 4WD light appears, it is letting you know that there is an issue with the 4WD system and it must be handled promptly. Another reason why this light may occur is an incomplete shift in gears. … In order to prevent damage, it is important to switch your gears completely while the car is not in motion.

What does a transfer case control module do?

The Transfer Case Control Module (TCCM) is a specialty of the General Motor’s 4WD operation. It controls the electronically-operated 4-wheel-drive system. All of its functions involve the shift – processing the shift request, executing it, and verifying the completion.

Why is my truck stuck in 4 high?

Four-wheel drive vehicles can become stuck in four-wheel mode due to improper lubrication or lack of use. … It is important that you switch to two-wheel drive when you transition to a hard dry surface, as operating in four-wheel drive mode on the highway will decrease fuel efficiency and can lead to damage.

What does a flashing 4×4 light mean?

A lot of the time, a flashing 4WD light is no reason to be alarmed, because it simply means that the system is working as designed. On vehicles where four-wheel drive is only activated on demand — that is to say, when traction conditions require it — this light shows up to tell you that it’s been activated.

What is 4×4 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.

How do you test a GM Tccm?

A quick and easy test for the 4WD light system is to ground TCCM terminals #C11, C12 & C13 individually and see if each 4WD light illuminates. If each 4WD light illuminates, the 4WD light circuits are intact. Suspect a possible TCCM problem. Refer to the TCCM connector views to determine the correct terminal locations.

Can you drive with a broken transfer case?

Should you drive your car with a bad transfer case? Driving your car with a bad transfer case is a bad idea. If you continue to drive with a transfer case that has a serious mechanical problem, you could destroy it beyond the point of repair, and possibly damage your transmission, driveshafts and axles in the process.