Service 4wd message may be displayed on chevrolet silverado 1500. A look at the new mp transfer case i f youve had the opportunity to look under a new 4wd truck lately, youve probably noticed something new. Highrange fourwheel drive, marked as 4 on most transfer cases, is designed for use on loose or slippery surfaces. For trucks equipped with a manual transfer case, an indicator within the gauge. Chevy silverado and gmc sierra 4x4 questions car forums. Video on how to replace the transfer case select switch, or some people call it the 4 wheel drive switch, on a 2005 gmc sierra 1500. I have a 2007 silverado 1500, purchased as certified used from a chevy dealer and now with less than 40,000 miles on the vehicle. Gmc sierra 1500 transfer case switch transfer case switch. A fourwheel drive actuator is a component of your fourwheel drive 4wd system that automatically locks the hubs. Automatic transfer control fuse ask the gm technician gm. T tocas 60 amp circuit breaker amp breakers with switch manual reset for. Turn the ignition switch while observing the transfer case shift control switch indicators. The transfer case looks a little different than those youve become used to working with for the last decade or so.
Shop gmc sierra 1500 transfer case switch finding the right gmc sierra 1500 transfer case switch mustnt be a hassle. Gmc sierra 4wd with manual shift transfer case 2007, gm original equipment transfer case shift fork by acdelco. Transmissiontransfer case output speed sensor application summary. Symptoms of a bad transfer case manifest themselves differently depending on the extent of damage within this important driveline component. Unlike the manual transfer case, this system has a transfer case motor. The power created in your gmc sierras engine is useless without a transfer case because power must be channeled from the engine, through the transmission and to. Id look at the dash switch, the transfer case solenoid that controls the 4wd, and the solenoid that controls the engagement of the front differential. The transfer case control module symptoms make you aware of any problem. Replacing push button transfer case with manual transfer.
Replacing push button transfer case with manual transfer case discussion in 1st gen. A transfer case is a part of the drivetrain of fourwheeldrive, allwheeldrive, and other multiple powered axle vehicles. We have more than 15 years of oem parts experience. You will probably see 3 possible switches, one right above the encoder motor this one actualy goes to the encoder motor there is also another one behind the transfer case to the rear of the truck this one is the over drive switch the one you need is directly on top of the. To engage the fourwheeldrive system the vehicle must be moving at a lower speeds. Keep this manual in the vehicle, so it will be there if it is ever needed.
From the driver side door go underneath to the transfer case. In this setting, the front axle is engaged, and the transfer case then sends power to. Index a good place to quickly locate information about the vehicle is the index in the back of the manual. The 4wd transfer case encoder motor position sensor or the selector switch may fail causing the service 4wd message to be. According to aamco, the most obvious sign of transfer case failure is the complete loss of fourwheel or allwheel drive. When you engage your fourwheel drive, the transfer case shifts to also drive the front wheels. It is an alphabetical list of what is in the manual and the page number where it can be found.
Gmc sierra 1500 transfer case best transfer case parts for. If the vehicle is sold, leave this manual in it so the new owner can use it. The atcm monitors inputs from the transfer case control switch, front and rear driveshaft speed sensors pro. Mar 26, 2009 check the fuse panel on the driver side dash, open door its in the corner of the dash. Gmc sierra 1500 transfer case best transfer case parts. Another sign of extensive damage to the transfer case is the inability to switch. The truck intermittently loses all electrical power while parked, even after being driven for many miles and then stopped for only a few minutes. Tri city transmissions 1591 strasburg road kitchener. All of its functions involve the shift processing the shift request, executing it, and verifying the completion. Power outlet 110120v alternating current if equipped. Gmc sierra 1500 transfer case switch transfer case.
I have also had to replace the heater control already. Chevy silverado electrical nightmare maintenancerepairs. Chevrolet silverado tahoe gmc sierra transfer case shift. These actuators are either vacuum operated or electronic, and take the place of manual locking hubs. Aug 09, 2017 video on how to replace the transfer case select switch, or some people call it the 4 wheel drive switch, on a 2005 gmc sierra 1500.
Automatic transfer control fuse ask the gm technician. Fourwheel drive also known as 4wd or 4wheel drive systems allow the engine to drive all four wheels of a vehicle simultaneously at the same speed. Need help with 4x4 transfer case switches tacoma world. It also synchronizes the difference between the rotation of the front and rear wheels, and may contain one or more sets of low range gears for offroad use. The dashmounted transfer case mode control is a set of normally open switches that vary the voltage supplied by the transfer case module when closed. The 4wd transfer case encoder motor position sensor or the selector switch may fail causing the service 4wd message to be displayed. Shop here and enjoy a wide selection of highquality parts at affordable prices. On many transfer cases, this shifter is the same as the one that selects 2wd or 4wd operation. Faulty transfer case control module transfer case control module harness is open or shorted transfer case control module circuit poor electrical connection. Gmc sierra 4wd 2nd generation with aluminium shift transfer case with manual shift transfer case with switch activated transfer case with 1 speed fulltime transfer case 2008, gm original equipment transfer case input shaft. Note that your vehicle may not include all the features described in this booklet. Acdelco 88962315 gm original equipment transfer case range.
Its got the push button engage on the handle, i was offroad one day, found myself in a sticky situation sliding down a muddy hill, i put it in neutral, hit the button like youre supposed to. This was used on 2007 new body style only with np8 nvg246 or nqh mp30233024 transfer case only. To access the dtcs, you will need to hook up a vehicle diagnostic scanner utilizing the service port under the driver side portion. This listing is for a new genuine gm 15284155 transfer case selector switch. Designed utilizing the latest technology, this product by acdelco features premium quality and will perform better than. The code was for the transfer case encoder motor function, so we. The most commonly reported 2007 gmc sierra 1500 problem is. The door must be opened with a key rather than the remote.
Chevrolet silverado 1500 questions 4x4 help cargurus. Jan 10, 2019 the transfer case control module tccm is a specialty of the general motors 4wd operation. Chevrolet 200089, gmc 200089, oldsmobile 199796, oldsmobile 199491 application attributes. A transfer case is a part of the drivetrain of four wheeldrive, allwheeldrive, and other multiple. The transfer case shift motor is a part of some vehicles fourwheel drive 4wd system and is responsible for switching between the vehicles different two and fourwheel drive options.
Transfer case control module symptoms you should not ignore. Buy 4wd wheel drive switch 4x4 transfer case selector dash switch 15709327 901062 for chevy gmc sierra silverado. Check out free battery charging and engine diagnostic testing while you are in store. The atcm then sends a signal to the encoder motor assembly, fully engaging the transfer case clutch assembly, which provides torque application to the front drive axle. The specifications of a 2007 gmc sierra 2500hd duramax. On some vehicles this may be electronically operated by a switch instead. Wonder how to put your transfer case into neutral and you dont wanna read your manual. It controls the electronicallyoperated 4wheeldrive system.
Chevy silverado and gmc sierra 4x4 questions car forums at. The transfer case is a critical component on vehicles that have all wheel or four wheel drive. With a simple press of the transfer case control switch, the driver has the option of selecting auto 4wd, 2hi, 4hi, 4lo or neutral. The only related fuse at that location is marked 4wd. U0102 gmc tech notes there is a factory service bulletin for the following gmc models. The transfer case control module tccm is a specialty of the general motors 4wd operation. Guidelines staff calendar leaderboard online users more. The transfer case transfers power from the transmission to the front and rear axles by means of drive shafts. On vehicles equipped with a magna transfer case rpo nqf. Using this manual to quickly locate information about the vehicle, use the index in the back of the manual. I changed the actuator on the differential and also changed the encoder transfer case motor like some peo read more. Apr 08, 2017 service 4wd light was on in the dash of this 2006 silverado 1500, we took it to the local chevy dealership and got the code read. In this setting, the front axle is engaged, and the transfer case then sends power to both the front and rear axles and to all four wheels.
When one dtc is stored in memory, that code will blink that number of times followed by a. Fault codes stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed. This is for np8 nvg246 or nqh mp30233024 transfer case only if you are uncertain of yours confirm prior to buying. The external dimensions of the 2500hd line vary by cabin, trim level and bed length. The 4wd transfer case encoder motor position sensor or the selector switch.
The worst complaints are engine, seat belts air bags, and transmission problems. The transfer case module sends 8 volts to the switches, then monitors the return circuit to determine whether any of the switches is depressed. Electronic shift onthefly esof transfer cases have a dashmounted selector switch or buttons with front sealed automatic locking axle hubs or drive flanges. U0102 gmc lost communication with transfer case control. The transfer case encoder detects the position of the shift shaft assembly on the transfer case. Service 4wd light was on in the dash of this 2006 silverado 1500, we took it to the local chevy dealership and got the code read. Please read this information about your vehicles features and your owner manual to ensure an outstanding ownership experience.
The transmission has one of the ears broken off of it for the upper rear bolt of the bell housing but the part is with the transmission and could be welded back on. Check the fuse panel on the driver side dash, open door its in the corner of the dash. Taking the electric 4x4 actuator off a gm 99 blazer or most gm trucks transfer case and making it manual for a cheap, reliable, permanent fix. Danger, warning, and caution warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce. Keep this booklet with your owner manual for easy reference. Nov 04, 2007 ok, so the other day my truck got stuck in 4lo, after a few cycles of the ignition, the truck allowed me to get out of 4 lo, and into 2hi. Since i was getting scan data and encoder motor operation, the fuse had to be good. All of its functions involve the shift processing the shift request. It is an alphabetical list of what is in the manual. If the transfer case shift control switch buttons all blink only once and then stop, no fault codes are stored in the transfer case shift control module. I think theres less chance of a problem with the tires. Compatible vehicles this power 4wd switch fits for 20062007 cadillac. Safety warnings and symbols there are a number of safety cautions in this book.
But as two separate cases on gms 4wd system reveal, these codes are not. Chevrolet silverado 1500 service 4wd light on repairpal. While repairs tend to be more severe than average, the number of those issues is low, so major repairs are uncommon for the sierra 1500. Another possible cause for dtcc0327 could be a mechanical concern within the transfer case shift assembly. Canadian owners a french language copy of this manual can be obtained from your dealer or from. The power created in your gmc sierra s engine is useless without a transfer case because power must be channeled from the engine, through the transmission and to the axles in order for the vehicle to move at all. I replaced the switch on the transfer case twice the dash switch once and the control module for the 4x4 and mine is still putting itself into auto 4 wheel drive when i start it. Passenger airbag onoff switch if equipped out of view. Gmc sierra 1500 1500 hd 4wd with manual shift transfer case with new process np 261gm series transfer case 2006, remanufactured transfer case assembly by dahmer powertrain.
Using the window switch, press to open or pull to close the window. Transmission transfer case output speed sensor application summary. Heated and ventilated front seats 0 65 if equipped. Above size for manual measurement, due to personal measurement technique is different, there may be cm error of the physical.
U0102 gmc lost communication with transfer case control module. Automatic transfer case functions are totally disabled in 2hi mode. Highrange four wheel drive highrange fourwheel drive, marked as 4 on most transfer cases, is designed for use on loose or slippery surfaces. Dtcc0327 will set when the transfer case control module detects a variation in the specifi ed voltage for the transfer case encoder circuit. Gmc sierra 1500 transfer case motor transfer case motors. If your vehicle has the duramax diesel engine, refer to the duramax diesel supplement for additional and speci.