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WHERE IS THE TRANSFER CASE CONTROL MODULE ON 2004 CHEVROLET TRUCK

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: where is the transfer case control module located

It is located under the driver side dash, on the steering column. See diagram below:
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Posted on Oct 18, 2009

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clifford224
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SOURCE: i need a wiring diagram for a dodge ram 2500 quad

I have given you the wiring for the control module itself. Not sure if you need everything in that area or what. If you need anything else, feel free to email me csautomotivecars@att.net with what you need but please be detailed so I'm sure I send the correct stuff. I hope this is what you need and I hope it helps. Good luck.


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Posted on Jun 01, 2011

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1 Answer

Replaced 4wd switch on dashboard, did not solve problem. 4wd doesn't connect.


Which of these transfer case's does your truck have ?
Transfer Case - NVG 149-NP3 Transfer Case - NVG 246-NP8 Transfer Case - NVG 261-NP2 Transfer Case - NVG 263-NP1
The NVG 263 transfer case features a three button shift control switch located on the instrument panel.
DTC B0790 DTC B2725 DTC C0306 DTC C0327 DTC C0359 DTC C0379 DTC C0550

The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel.
DTC B0790 DTC B2725 DTC C0300 DTC C0305 DTC C0306 DTC C0321 DTC C0327 DTC C0359 DTC C0374 DTC C0379 DTC C0550
Regardless both of these switch's are input's to a control module . There are probably DTC'S - diagnostic trouble codes stored . You should have the vehicle checked for DTC , That means taking you vehicle to the repair shop .

Mar 26, 2016 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

Have 2004 Chevy1500z71&service 4wd message comes onafter it in 4H but it still worksHad fluids changed 2 yrs ago.Goes into 4wdfine&seems like it runs good. Comes on sometime even not in 4wd. Thanks


Which transfer case does your truck have ?
SERVICE 4WD
Refer to
?€¢
Transfer Case Description and Operation for the Transfer Case - NVG 149-NP3


?€¢
Transfer Case Description and Operation for the Transfer Case - NVG 246-NP8


?€¢
Transfer Case Description and Operation for the Transfer Case - NVG 261-NP2


?€¢
Transfer Case Description and Operation for the Transfer Case - NVG 263-NP1


The SERVICE 4WD indicator is located in the instrument panel cluster (IPC), and shares the common power and ground of the IPC. The transfer case shift control module controls the service indicator by sending the IPC a Class 2 message. This indicator may be controlled with the scan tool using the IPC device controls.
You should take it to the dealer an have it checked for DTC'S -diagnostic trouble codes

Jan 07, 2016 | Cars & Trucks

3 Answers

Can not get out of 4 wheel drive


Check your Actuator to see if its working, or it could be your push button control.

May 27, 2014 | 2004 Chevrolet Tahoe

1 Answer

2002 envoy code co550


you need to replace the tccm and get it programmed.


2-04-21-006E: Inoperative 4WD/AWD Lamps, Inoperative 4WD/AWD System, DTC C0550 Set No Communication with TCCM (Reprogram Transfer Case Control Module) - (Jul 20, 2006)
999999995.gif Subject: Inoperative 4WD/AWD Lamps, Inoperative 4WD/AWD System, DTC C0550 Set, No Communication with TCCM (Reprogram Transfer Case Control Module) Models: 2004 Buick Rainier 2002-2004 Chevrolet TrailBlazer, TrailBlazer EXT 2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2002-2004 GMC Envoy, Envoy XL 2003-2004 GMC Sierra, Yukon, Yukon XL 2004 GMC Envoy XUV 2002-2004 Oldsmobile Bravada with Electronic Shift or Active Transfer Case (RPOs NP1, NP4 or NP8)

This bulletin is being revised to add Subject information and change the labor operation. This bulletin cancels and supersedes Bulletin Number 03-04-21-006. Please discard Corporate Bulletin Numbers 02-04-21-006D and 03-04-21-006 (Section 04 -- Driveline/Axle).
ConditionSome customers may comment that the 4WD/AWD indicator lights on the selector switch do not work, or the 4WD/AWD system may be inoperative and/or the service 4WD light is illuminated. The condition is typically intermittent and always occurs at key-up. Upon investigation, the technician may find DTC C0550 set.
CauseThe Transfer Case Control Module (TCCM) has not received the wake-up call during key-up and has remained in the "sleep mode".
When the TCCM is in the "sleep mode", it will not communicate with the class II bus or the Tech 2®.
Correction
  1. Try to communicate with the TCCM. If no communication, go to step 2. If communication is possible, go to step 5.
  2. Remove the underhood (ATCM or TREC) TCCM fuse.
  3. Wait 30 seconds.
  4. Reinstall the fuse. The module should "wake up" and communicate with the Tech 2®.
  5. Check for codes in the TCCM. If a C0550 is found current or in history with or without other codes, replace the module and go to step 6.
  6. Reprogram the TCCM with the latest TIS software using normal SPS procedures.
  7. Verify operation and that no codes are present.
Important: For the 2002 model year, the TCCM must be replaced and reprogrammed.
Warranty Information

Jul 29, 2011 | 2002 GMC Envoy

1 Answer

Where is the transfer case shift motor located on 2004 dodge dakota


The transmission control module and the transfer case control module are separate parts. The transmission control module is mounted under the hood and controls only transmission functions. The transfer case control module controls only the transfer case, and is located inside the truck. If you remove the trim panel under the steering column you will find the transfer case control module mounted just to the right of the opening.


The shift motor is located just behind the axle tube to prevent damage.
There is a shift motor on the right front axle that is vacuum operated.
The shift motor (1) is an electromechanical device consisting of a DC permanent magnet motor, a motor brake, a gear train and an analog position sensor. The shift motors' overall function is to move and lock a gear that moves the mode fork found in the transfer case. This allows the transfer case to be shifted electrically to multiple operating positions (4LOCK and AWD). The operating current of the shift motor under
stall conditions is 30 amps maximum at 72° F with 13.5 volts, at the motor leads.
OPERATION
Shifting in the transfer case occurs when the shift motor brake is released and a Pulse Width Modulated (PWM) voltage is supplied to the shift motor by the Front Control Module (FCM). A linear analog position sensor located inside the shift motor, provides the FCM with the motors' angular, rotational position. With this information, the FCM
continuously knows the motors' position, and therefore allows it to accurately control the motors' operation, including voltage polarity which is used to control motor direction.

REMOVAL :---Note: New shift motor assemblies are shipped in the AWD position. If a new shift motor assembly must be installed, it will be necessary to shift the transfer case to the AWD position prior to motor installation.
Raise the vehicle on a suitable hoist.Remove the front propeller shaft. Disengage the wiring connectors from the shift motor and mode sensor.Remove the front output shaft companion flange from the transfer case.Remove the bolts (Remove the Shift Motor and Mode Sensor Assembly Bolts) holding the shift motor and mode sensor assembly onto the transfer case.Separate the shift motor and mode sensor assembly from the transfer case. See fig below:-- helpmech_19.gif
1 - TRANSFER CASE.2 - SHIFT MOTOR AND MODE SENSOR ASSEMBLY.3 - BOLT.-- This should help.Thanks.Helpmech.

Feb 26, 2011 | 2004 Dodge Dakota

1 Answer

Four-wheel drive not working. No light on swtich. New transfer case motor. Checked the fuses and the four-wheel drive switch. What can it be?


Was the transfer case fluid changed every 50K miles? This very important on these trucks. The Transfer Case Control Module (TCCM) could be at fault, especially since you have no lights on the selector switch. Is the Service 4x4 light on? When you switch from 2H to any of the 4 wheel drive selections, do you hear any actuator noises coming from under the truck?

Dec 07, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

My truck was engaged into 4 wheel drive lo and now it will not engage into anything else. It is a 2004 silverado with push button 4 wheel drive.need to know where my acuator and module is located to see if...


Your transfer case encoder motor [the thing that shifts the transfer case] is located on the LH side of the transfer case. I believe the control module should be located behind the dash near the light switch area.
If it stays in 4-Lo and the push button indicator just flashes for a while when you select, say, 2 Hi then stops blinking and goes back to the 4-Lo position then I would have someone hook up and check to see what service codes are present. I see a lot of encoder position sensors go bad but you really need a scan tool hooked up to the system to be able to watch what is happening as the shift is attempted. There aren't any vacuum controls on this system.
Hope this helps you out a bit!

Nov 28, 2010 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

2004 silverado 4 wheel drive does not work, 4 wheel high button remains lit, will not change to any other button


1. Inspect Transfer Case Control Module (TCCM) and encoder/motor wiring, terminal contact, grounds.

2. Install updated TCCM calibration.

3. Inspect for TCCM water intrusion.
4. Replace transfer case encoder/motor. 1. Check voltage on pin A, Light Blue wire at the engage switch.

2. The voltage should remain near 1.0v with no buttons pushed, compare to the value on the scanner when the problem happens.

3. Back close to the switch by hand and check for a glitch.

4. Wiggle tug test harnesses at the switch and TCCM.

5. Check terminal to pin grip. could be your transfercase control module locater under drivers side of dash. or the encoder motor

Oct 23, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

4wd wont work


You need to get it scanned for codes, if you have a B2725 then you have a 4WD switch problem, otherwise the fault is probably in the transfer case control module.

Jan 03, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

3 Answers

Blazer stuck in 4 wheel high


Well I replaced the Transfer Case Control Module and the 4 button selector swith on the dash, and my 20001 Chevrolet Blazer Lt is still stuck in 4whl. drive high. Does anyone have any advice on this, Ive also already checked all fuses under the hood and in the truck, all are ok.

Nov 24, 2008 | 2001 Chevrolet Blazer

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