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Can I disconnect the AWD and make it front wheel only due to high cost to repair

The malfunction light for the AWD is on for weeks, can the car be damaged if I keep driving?

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It depends on what the actual problem is.
If it is something inside the transfer case, you could do more damage if it is not repaired. If it is just a switch, probably not.

Posted on Apr 07, 2015

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Posted on Jan 02, 2017

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1 Answer

Push button for four wheel drive isn't working


Do you have any lights on the dash lit ?
SERVICE indicator (4WD/AWD) Lamp
The SERVICE indicator (4WD/AWD) lamp is an integral part of the cluster and cannot be serviced separately. This lamp is used to inform the driver of the vehicle of malfunctions within the automatic transfer case (ATC) system. The SERVICE indicator (4WD/AWD) lamp is controlled by the transfer case shift control module via CKT 1567. this system will set DTC'S if there is a problem .
Diagnostic Trouble Codes DTC B2725 ATC Mode Switch Circuit Malfunction DTC C0300 Rear Speed Sensor Malfunction DTC C0305 Front Speed Sensor Malfunction DTC C0308 Motor A/B Circuit Low DTC C0309 Motor A/B Circuit High DTC C0310 Motor A/B Circuit Open DTC C0315 Motor Ground Circuit Open DTC C0323 T-Case Lock Circuit Low DTC C0324 T-Case Lock Circuit High DTC C0327 Encoder Circuit Malfunction DTC C0367 Front Axle Control Circuit High DTC C0374 General System Malfunction DTC C0376 Front/Rear Shaft Speed Mismatch DTC C0387 Unable to Perform Shift DTC C0550 ECU Malfunction DTC C0611 VIN Information Error you probably should take this to a repair shop !

This tt

Feb 22, 2015 | 1999 Chevrolet Silverado 1500

4 Answers

Transaxle will not down shift with accelator pedal pressed to the floor


THIS VAN HAS A VERY HIGH TRANSMISSION FAILURE RATE, AND THAT IS WHAT IS WRONG WITH YOUR TRANS, THE AUTOMATIC TRANSMISSION'S FORWARD CLUTCH PACK HAS FAILED, YOU WILL NEED AN OVERHAUL TO REPAIR THIS FAILED PART.

Jul 08, 2009 | 1997 Plymouth Voyager

1 Answer

AWD not working


No 4X4 switch on the instrument panel ?
Automatic Transfer Case
The single speed automatic transfer case system shifts automatically from rear wheel drive to four wheel drive when the transfer case shift control module (TCSCM) senses the difference in rotation speed of the front propeller shaft and the rear propeller shaft . Two vehicle speed sensors, one located at the rear output shaft area of the transfer case, and the other, located at the front output shaft area of the transfer case, send front and rear propeller shaft rotation speed information to the TCSCM.
When the front and rear output shaft rotations remain the same, the TCSCM sends pulse width modulation signals to the encoder/motor to keep the transfer case in rear wheel drive. When the front and rear output shafts rotations are different, the shift control module sends pulse width modulation signals to the encoder/motor to engage the transfer case into four wheel drive.
The system will automatically transfer a percentage of torque to either the front or rear axles as required to stop all wheel slip. When the front and rear output shafts rotations return to the same speed rotation, the shift control module sends pulse width modulation signals to the encoder/motor to position the transfer case back into rear wheel drive.
When the transfer case is engaged into four wheel drive, a lamp indicator on the instrument cluster will light. The automatic transfer case system is completely automated, no transfer case control button switching system is required.

Do you know what DTC'S - diagnostic trouble code's are ?
Auto part stores can't read these , your best bet take it to a qualified repair shop . One that has the knowledge an diagnostic equipment .
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error
DTC C0895 Device Voltage Malfunction
Without proper factory service an repair info. an diagnostic tools

Jan 08, 2018 | 1998 Oldsmobile Bravada

1 Answer

99 silverado 4wd switch lit up like Xmas tree was in 2whl now? 4wd service popped in for a second then all lights indicator lights went out. Disconnected battery a few times and light reset and was ab


4wd switch lit up , DTC'S - diagnostic trouble codes stored in the 4X4 control module . Which 4X4 system ?
Transfer Case - NVG 246-NP8 (Two Speed Automatic)
Transfer Case - NVG 261-NP2 (Two Speed Manual)

DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

Nov 12, 2017 | 1999 Chevrolet Silverado 1500

1 Answer

Awd disable and anti lock light is on and a grinding noise in the front end


Hi, I can help

You have a bad wheel bearing assembly.
The bearing is starting to seize up, and it is telling computer there is a problem in ABS system, as well as AWD system.

First thing is to locate which bearing it is in the front end of the vehicle.

1)Jack up each side of the front end, place a safety support stand or jack stand under frame of vehicle.
2)Once vehicle wheel is free from ground spin the wheel and listen for grinding.
3)Compare each wheel as you spin and make your best judgment on which is more noisy.
4)This is your problem wheel you need to remember which side of the vehicle is the source of problem when ordering the part from your local auto parts store.

To repair: Remove wheel, remove brake caliper, then brake caliper bracket, then the rotor, remove center axle nut, then remove bolts for wheel bearing hub assembly.
Your ABS and AWD lights will reset themselves upon successful test drive following repair.
Let me know if you need more assistance or pictures.
Good Luck, have a great day.

May 07, 2011 | 2006 Buick Rendezvous

1 Answer

99 Chevy Silverado 4x4 not working No light on 4x4 Selector Panel


Your brake an CV joint issue can't an won't cause your 4X4 problem . The 4x4 system has a control module which supply's B+ voltage to the switch . Checking for codes in the 4X4 control module should have been the first step . Your best bet , take it to a qualified repair shop . You don't have the knowledge or test equipment to fix this.
SERVICE indicator (4WD/AWD) Lamp
The SERVICE indicator (4WD/AWD) lamp is an integral part of the cluster and cannot be serviced separately. This lamp is used to inform the driver of the vehicle of malfunctions within the automatic transfer case (ATC) system. The SERVICE indicator (4WD/AWD) lamp is controlled by the transfer case shift control module via CKT 1567.

Transfer Case Shift Control Module
The transfer case shift control module uses the VIN information for calculations that are required for the different calibrations used based on axle ratio, transmission, tire size, and engine. The system does not know which calibration to use without this information.
The direct battery supply line (CKT 1640) provides the power to the module and motor circuitry.
Transfer Case Encoder Motor
The transfer case encoder motor consists of a permanent magnet (PM) DC motor and gear reduction assembly. It is located on the left hand side (drivers side) of the transfer case. When activated it turns the sector shaft of the transfer case (clockwise or counter clockwise) to shift the transfer case. The encoder motor is controlled with a pulse width modulated (PWM) circuit within the transfer case shift control module. This circuit consists of a driver on both the Motor A and Motor B circuits. The encoder motor is bi-directional to allow the motor to shift the transfer case from 2HI or 4HI to NEUTRAL and 4LO positions.
Do you know what DTC'S are ?
DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

Aug 27, 2017 | 1999 Chevrolet Silverado 1500

1 Answer

AWD Light stays on


3rd dealer stated that the problem was in the differential pump valve, when the temperture sensor was giving a false reading and disconnecting the rear wheel drive. Replaced with GM Part 88896067, and it solved the problem. Mechanic stated that if it is ONLY the AWD light, then this is usually the problem. If the ABS Disable light also goes on, then it is the harness on the wheel sensor.

Jul 28, 2009 | 2002 Buick Rendezvous

2 Answers

2004 Ford F-150 extended cab FX4. 4WD problem


The malfunctioning part in my case is what ford calls the "integrated wheel end" which locs the weel hub on the four wheel drive in or out as need. Part is available from Ford and cost about $110.00. I will do this repair myself.

Apr 08, 2009 | 2004 Ford F150

1 Answer

Check 4 wheel drive light keeps coming on.....


Not true that GM dealer is the only one that can fix it . There are other independent repair shops that can, Transmission repair shops like AAMCO . You could too if you had access to a scan tool that can read DTC'S - diagnostic trouble codes for the 4X4 system . There is a 4X4 control module that can store DTC'S when problems happen . When a warning like check 4 Wheel Drive light's up ,it's not meant for you to do anything except take it to the dealer ,well ,that's what the dealer would like .
Would need to know which 4X4 transfer case your's has ? Two speed manual , two speed selectable , two speed automatic ?
Their are a few different one's
Transfer Case - BW 4401 (Two Speed Manual)
Transfer Case - BW 4470 (Two Speed Manual)
Transfer Case - NVG 241-NP2 (Two Speed Manual)
Transfer Case - NVG 243-NP1 (Two Speed Selectable)
Transfer Case - NVG 246-NP8 (Two Speed Automatic)

Two speed Automatic system can set a number of codes
DTC B0768 Service Indicator Circuit High
DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0357 Park Switch Circuit High
DTC C0362 4LO Discrete Output Circuit High
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error
Without having this info you could go round an round an never find the problem .

Sep 15, 2017 | 1999 GMC Sierra

1 Answer

Cost of repairs 2006 Sienna Limited AWD


your talkin a good chunk of money definitly over 100 dollars i would think after the labor cost probably around $350.....

Oct 01, 2008 | 2006 Toyota Sienna

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