Where is the encoder motor on a GM transfer case?

Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.

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.

What makes up a sys-tem transfer case?

The basic sys- tem consists of a transfer case motor and encoder, front differential actua- tor, transfer case module, speed sen- sors, switches and park input and out- put to the PCM. It seems logical to use case studies to show how these systems can be repaired.

What does DTCs stand for in GM transfer case?

DTCs will stay in memory for 100 key cycles. 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.

Where is the front output shaft located on a transfer case?

Determine which side of the vehicle the front output shaft is situated on. Some models of transfer cases come in right and left hand drive versions for the same vehicle line. (Figures 10, 11)

What kind of switch does a transfer case use?

Type and location of switches. Many transfer cases use electric or vacuum switches to indicate shifter position to operate vacuum diaphragms or solenoids to shift the unit or engage and disengage the front differential. Knowing the type and location of switch is mission critical. Length of Switch threads Figure 15-16

Where do you find the ID number on a transfer case?

Typical ID tags are shown here (Figures 1 & 2) with an explanation of what the information means. Record this information on your work order along with the previously gathered vehicle specs. On late model units you will find barcode decals on the cases with OEM part numbers attached.

How many different types of transfer cases are there?

Today, there are over 40 different models of transfer cases of American manufacture plus a number of offshore units. The two major transfer case manu- facturers are Borg Warner Torque Transfer Systems, and the New Venture Gear Co.

Why does my transfer case make a grinding noise?

Transfer Case grinding noise – FIXED! Discussion in ‘ Mechanic’s Corner ‘ started by stadt11, May 23, 2010 . My transfer case has started making a horrible grinding noise. First I thought it was coming from the driveshaft or the front/rear diff, but wasn’t sure.

Is there an amp in the back of my Blazer?

Well, just before this starting happening, my son and I installed a sub and amp in the back of the Blazer.

Which is the left hand drive of a transfer case?

Figure 10 241 Left Hand Drive Right or left hand drive. Determine which side of the vehicle the front output shaft is situated on. Some models of transfer cases come in right and left hand drive versions for the same vehicle line. (Figures 10, 11)

How are speed sensors used in transfer cases?

Number and location of speed sensors. Some transfer cases are equipped with speed sensors and speedometer drives while others use speed sensors to read vehicle speed. A mismatch means more work and a job delayed. Shift Motor

How does the transfer case module work on a truck?

The transfer case module sends 8 volts to the switches, then monitors the return circuit to determine whether any of the switches is depressed. It can determine this because each switch has a different resistor in series with the circuit. Since both trucks have mode switch trouble codes, it seems logical to start there.

What kind of transfer case does Gm K 1500 have?

We looked at two GM K 1500 trucks that have the NVG 246 two-speed transfer case. One is a 1999 model, the other a 2000. Both use the same controls and happen to have stored the same DTC.

What does ATC stand for in GM transfer case?

The transfer case module data can be accessed with a scan tool such as the Tech 2, which is GM’s official scan tool. To get to the proper screens, you must choose the Power- train selection, then navigate your way to the ATC selections. ATC is the GM acronym for active transfer case.

Why is my Chevy Blazer 98 not working?

Description: This Chevy Blazer 98 4×4 w New venture 233 transfer case had the 4×4 not working. The system can be viewed in 2 parts, the computer controlled parts, which actuate the transfer case and locks the front drive shaft in. And part 2, the mechanical, which involves vacuum actuated and controlled parts.

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.

Why is the shift button not working on my Silverado 4×4?

It is not the auto system with the button,but the manual system with the 4WD shift handle on the floor. I see a linkage on the tranny case to the 4WD shifter,and the electrical actuator on the front differential.

How does the transfer case work on the NV 246?

Operation of the motor on the NV 246 requires the release of the motor brake, which is always receiving power through the transfer-case fuse. The module controls the motor brake by grounding the brake through a circuit driver that limits the current.

How does the encoder work on the NV 246?

The encoder grounds each of the four channels in a specific sequence based on the position requested. When the ATCM sees the right values it will turn off the motor and apply the motor brake to keep the motor and linkage aligned in the selected range. Any incorrect voltage sequence to the ATCM will set a diagnostic code.

Is there a warranty on the GMC 246 transfer case?

There are several variations of the 246, so your assembly number or VIN will be required (see below) when ordering this unit. The unit is remanufactured in our facility and comes with a 24-month, unlimited miles warranty within the 48 contiguous United States. Any questions? Call 1800MUDROAD

What kind of transfer case does GM venture 246 have?

This month’s candidate is the New Venture 246 transfer case, which is found in GM full-size four-wheel-drive vehicles, from 1998 to present. This transfer case is one of the so-called “automatic transfer cases,” or “active transfer cases.”

Where can I get a GMC transfer case?

For five decades strong. we build new and remanufactured vehicle parts that meet or exceed OE designs at a fraction of the cost. Our global team supports a full spectrum of products and services for a diverse customer base, including OEMs, warehouse distributors, fleets and retailers.

How does transfer case switch to 4 wheel drive?

In order for the transfer case to switch into four wheel drive, 4×4 mode a gear must be turned inside the transfer case. The 4WD Transfer Case Shift Encoder motor is the part that turns the gear inside the transfer case, allowing your vehicle to be switched into 4×4 mode.

Is the 4WD transfer case shift encoder motor OEM?

OEM Fit, Quality, Finish – The 4WD Transfer Case Shift Encoder motor is manufactured to the same specifications as the factory actuators. The actuator features a redesigned housing to insure it lasts longer than the factory part. While this is NOT a genuine OEM part, it is a direct replacement for the factory 4WD actuator.

When did the Chevy Avalanche go out of production?

The Chevy Avalanche is a four-door full-size sport utility truck manufactured from 2002 to 2013. If you are in need of high-quality Chevy Avalanche repair parts, check out our wide catalog of high-quality products made by leading manufacturers.

What are the solenoids on a Chevy Silverado?

The shift solenoids on your Chevrolet Silverado control fluid flow and transmission shift. Years of service take a toll on these solenoids, interfering with proper shifting or even preventing the transmission from shifting.

What are the sensors in a transmission solenoid?

The computer activates various solenoids to achieve this, including shift, TCC, and pressure control solenoids. The engine associated sensors include the TP (Throttle Position) sensor, ECT (Engine Coolant Temperature) sensor, MAP (Manifold Absolute Pressure) sensor, and MAF (Mass Air Flow) sensor.

Is the 241 transfer case right or left hand drive?

241 Left Hand Drive Right or left hand drive. Determine which side of the vehicle the front output shaft is situated on. Some models of transfer cases come in right and left hand drive versions for the same vehicle line. (Figures 10, 11) Figure 11

What kind of transmission do I need for a 1994 Dodge 5.9L Cummins?

Put the ultimate transmission in your 1994-1998 Dodge 5.9L Cummins 4WD with the CA Conversions Allison Conversion Kit. Custom Automatic (CA) Conversions has put years of research and development into providing you with the components needed to put a 5 or 6-speed Allison 1000 or 2000 series transmission behind your Cummins.

What is the name of the Dodge 2500 transfer case?

The NV241DLD , NP241DHD. Starting in 1994, the Ram 2500 transfer case was the NV241DLD (Dodge Light Duty). Optional on the 2500 and standard on the 3500 was the NV241DHD (Heavy Duty).

What kind of transmission does 2nd generation Cummins have?

Late 2nd Gen Cummins trucks are available in a high-output configuration. The High Output 24V 5.9L Cummins comes with a 6-speed manual transmission. This is slightly different than what we’ve seen Ram do in current times. Manual transmissions are much less capable than Aisin automatic transmissions or even the standard 68RFE.

Can you put an Allison Transmission behind a Cummins truck?

The Allison 1000 found in a Duramax pickup is the same transmission found in an International, Freightliner, and many other medium duty trucks. No other pickup manufacturer can make the same claims! Putting an Allison Transmission behind your Cummins gives you a “Million Mile Solution”.

Can a transfer case be changed in a 4WD truck?

The entire motor can be replaced, or just the less expensive encoder inside can be changed. The transfer case encoder motor moves the transfer case selector automatically. In Auto 4WD, it continually moves the input shaft of the transfer case to vary the amount of torque that goes to the front driveshaft.

How to change transfer case on 2004 Chevy Silverado?

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What to do if your transfer case does not move?

If it does not move at all, it could be the motor itself. The entire motor can be replaced, or just the less expensive encoder inside can be changed. The transfer case encoder motor moves the transfer case selector automatically.

How to install a new encoder in a transfer case?

o When installing the motor/encoder unit to the transfer case, make sure that the transfer case is indexed properly and it is flat against the transfer case before tightening the mounting bolts. 1. Install the NEW motor/encoder gasket to the transfer case. 2. Install the motor/encoder to the transfer case. Notice.

We looked at two GM K 1500 trucks that have the NVG 246 two-speed transfer case. One is a 1999 model, the other a 2000. Both use the same controls and happen to have stored the same DTC.

Is there a problem with the GM encoder?

The easiest way to confirm this problem is to tap on the button and watch the scan data along with the switch LEDs. When we did this, it caused all kinds of random lights and data readings. At one point, it even turned on the 4WD warning indicator.

Is the 4WD transfer case encoder motor lifetime?

Lifetime Warranty – The 4WD Transfer Case Shift Encoder Motor comes complete with a Lifetime Warranty. Save hundreds off dealer prices. If the actuator ever fail on your Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon or Ram 1500 and 2500, simply contact us for a replacement. New & Used (9) from $109.20 & FREE Shipping .

Where is the shift encoder motor on a Silverado?

The Shift Encoder Motor is located on the outside of the transfer case and is secured to the transfer case with 3 bolts. If your truck will not switch into 4×4 mode a faulty Shift Encoder motor maybe the cause. 2007 Chevrolet Silverado 1500 Classic & 1500 HD Classic Does this Fit my Truck?

Which is GMC Yukon has a transfer case?

All Wheel Drive (AWD) transfer case for GMC Yukon, Denali, Sierra 2001-2005. Cadillac Escalade Ext. Esv. 2000-2002. Call with your VIN # or Model # (located on rear case half of transfer case) to insure we ship you the right transfer case for you vehicle. 27 spline Input Gear.

Where is the transfer case shift encoder motor?

The 4WD Transfer Case Shift Encoder motor is the part that turns the gear inside the transfer case, allowing your vehicle to be switched into 4×4 mode. The Shift Encoder Motor is located on the outside of the transfer case and is secured to the transfer case with 3 bolts.

What does transfer case encoder do in 4WD?

The transfer case encoder motor moves the transfer case selector automatically. In Auto 4WD, it continually moves the input shaft of the transfer case to vary the amount of torque that goes to the front driveshaft. In 4Hi, 4Lo, or Neutral, it just moves to the proper position and locks in place.

Which is transfer case for General Motors TNT?

TNT Transfer Case. 1 GM NP136 Transfer Case. The NP136 transfer case was manufactured with electrical shift encoder motors, this unit has two different drive ranges 2 high 2 GM NP149 (AWD) Transfer Case. 3 GM NP 207 Transfer Case. 4 GM NP 208 Transfer Case. 5 GM NP231 Transfer Case.

Is the encoder motor part of the motor?

First bought aftermarket 4WD selector switch as guess to fix the message. Then got OBD-II scan which would have saved me $50 on the switch that didn’t correct problem. What I learned after ordering: the encoder motor is a complete assembly.

Where can I find the GM diagnostic trouble code?

Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s). Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other GM diagnostic trouble codes. Manufacturer Specific Codes P1031HO2S Heater Current Monitor Control Circuit Sensors 1

Where can I find the OBD code for my Acura?

If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. If at this point you still need assistance use the “Get Help” link and let us know how we can help.

Where is the encoder motor on a GM transfer case?