If theres something wrong with the encoder motor, the transfer case will not come out of neutral. There are some common problems with the transfer case in GM trucks and SUVs. An expert diagnosis can help you narrow down the main culprit. A transfer case comes in handy in a four-wheel-drive truck or SUV. (Buyers Guide! Solution - Reprogram the TCM with TIS version 6.0 or higher. 1. In case there is a leak in the transfer case, the gears will not be properly lubricated and they will start to wear out. The problem with many of these transfer cases is the pump design in relation to the case. This little part moves around the inner part of the transfer case. The NP208 transfer case is similar to the NP203 and NP205 cases, sharing a number of applications between them, though on the 208 the casing is made out of aluminum rather than iron.. Usage: Chevy Blazer, Suburban, and Tahoe from 1981-1988. DESCRIPTION. So, the only way to get rid of this annoying problem is to replace the switch itself. One of the most common lines of transfer cases from the 2000s had an embedded weak point that is costing many customers thousands to repair if not proactively addressed before a failure becomes present. When fluid is leaking from a broken seal, it reduces . When the gears are worn out, they will start to grind and eventually fail. The vehicle was taken to a dealer where it was diagnosed that the u-joints needed to be replaced. I just noticed the problem a couple of weeks ago. The next time it happens to you, get the transfer case checked. You may confuse it with the differential. Repair cost approx. The pump within my trucks transfer case has worn a hole through the casing. Thank you. Top GMC Sierra 2500 HD Problems Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail 169 people have reported this 79 Speedometer or Other Instrument Panel Gauge May Work Erratically 147 people have reported this 76 4WD Transfer Case Position Sensor/Selector Switch May Fail 105 people have reported this 38 This should not be happening on vehicles this new with little miles on them. See Avoid costly repairs to your transfer case by preventing the Pump Rub Issue before it happens. The holding clip for the oil pump inside of transfer case broke which allowed the oil pump to shake inside of case and consequently rubbed a hole thru t case which effectively emptied all the lubricating oil from t case ruining most of the parts inside. For a better experience, please enable JavaScript in your browser before proceeding. I have 2001 Chevrolet 2500 hd 4x4 crew cab short box, with a 5 speed allison automatic with push button 4 wheel drive on the dash. On December 27, 2014 while driving away from my house, once again the engine would rev up and the truck just coasted until it engaged causing a loud thump. Sometimes the light would disappear or the buttons would not respond. If youre having trouble with your Chevy Silverados transfer case, the first thing you should do is check the fluid level. Be sure to ask for a transfer case flush and refill specifically. Usually, if the leak stops at the highest point, thats where its coming from. Top Chevrolet Silverado 2500 HD Problems Speedometer or Other Instrument Panel Gauge May Work Erratically 257 people have reported this 142 Fuel Level Sensor Failure 167 people have reported this 92 4WD Transfer Case Position Sensor/Selector Switch May Fail 105 people have reported this 38 Inside Door Handles May Break 86 people have reported this These parts are bound to wear out as well, and a malfunction can lead to the production of grinding or humming noises whenever you are driving. Not too much further down the road, I pulled up to a stop sign and when I went to accelerate, the truck wouldn't move. I have not yet had a problem with the brakes, yet, but I tell you, it will be looked into. If you miss out on timely maintenance, the transfer case might fail to function, and you will have to replace it altogether. Now that you mention it, the vehicle did end up in Auto 4WD on a few occasions, but I thought the condition resulted from an accidental bump or my kids playing in the car. You can tell if the fluid is dirty by looking at it. There are several things you can do to fix Chevy Silverado transfer case problems. Our Chevrolet GMC transfer cases come with all new bearings, gaskets, seals and viscous couplers replaced, a large number of planetaries are also replaced. It is the sole responsibility of the viewer to assume this risk. Identified numerous complaints online on duramax trans missions, and identified an aftermarket product was made to prevent further cracks from occurring. It isnt uncommon for trucks to vibrate a little during driving. The vehicle was not repaired. Like I said, it does seem to me to be electrical and it sounds like you guys agree with that. If you havent replaced it before, theres a good chance its dirty. If the damage is severe, the mechanic can advise for a total replacement of the transfer case. The technicians at Advanced Transmission Center can install a case saver that will prevent the pump from moving around and rubbing against the inside of the case. 8AM 5:30PM Mon-Fri. Sounds like this is a very common problem with gm owners with this type of transfer case. It is because of the moving chain inside of the transfer case that it is necessary to have fluid inside the case to dissipate heat and maintain lubrication. The NP263 can be followed by and "HD" or "XHD". Cause The Transfer Case Control Module (TCCM) has not received the wake-up call during key-up and has remained in the "sleep mode". By doing so, you will remove the contaminants affecting the system. At Four Wheel Trends, we are passionate about vehicles and love sharing everything we learn about them.Four Wheel Trends aims to be the ultimate resource for learning everything about your vehicle or information when trying to find the right one. I plowed the last 2 days and toggled bewteen 2wd and 4wd with no issues. These are just some of the most common symptoms of a bad transfer case. Be sure to use the correct type of fluid for your Chevy Silverado. You may realize a decrease in the Duramax power and performance. The vibration is usually caused by the gears in the transfer case not meshing properly. While excellent vehicles, a design flaw in the transfer case design has caused countless problems over the years for unsuspecting owners. Certain types of problems can be annoying to deal with. Sounds like gm is ignoring this problem. Another common culprit is leakages. Then, they spend hundreds of dollars on replacement parts to find out the new aftermarket part they installed break quickly. The fluid can become contaminated over time and cause problems with the gears. If you notice that the truck is vibrating when youre driving, it could be a sign of a problem with the transfer case. Where older transfer cases were gear driven and had only a single gear ratio, modern transfer cases usually use a chain drive and have 2 gear ratios to provide more power options depending on driving conditions. all problems of the 2005 Chevrolet Silverado 2500 When you put your truck or SUV into 4-wheel drive, the transfer case splits the torque from the transmission by engaging both the front and rear driveshafts, meaning, power is going to both the front and rear differentials. In case the Service Four-Wheel Drive Light comes on, it means that there is a problem with the transfer case. However, if the issue persists, it can result in a damaged transfer case. In the following paragraphs, we will discuss some common issues with a Chevy Silverado transfer case. Rusting is another common issue with transfer case units. It may be a wiring issue or a connection problem. My Car Will Not Come Out Of Neutral 2.8 08. When that happens, you will have to replace half of the case. As a result, the truck wont come out of neutral. Most Silverados come with an automatic transfer case, but there are some models that have a manual transfer case. Amazon Services LLC Associate program is known as an affiliate advertising program which supports sites to earn additional income, which is also known as advertising fees when they advertise and connect to Amazon.com, and other brands of Amazon.com, Inc. How To Remove Broken Oil Dipstick (With DIY Methods : 2023). U-joints can be a pain in the neck to deal with. If the level of that fluid falls, the gears will grind and eventually fail. If theres something wrong with them, youll hear a squealing sound when switching from 2WD to 4WD. 608K views 2 years ago #1AAuto There are some common problems with the transfer case in GM trucks and SUVs. The contact owns a 2005 Chevrolet Silverado 2500. Severe shake when braking at high speeds, fuel tank failed (vehicle was spewing diesel) - it took 3 months to get a new tank, transfer case has failed multiple times. The front and rear driveshafts connected to the transfer case are able to mechanically lock, which means that both the front and rear axles receive an equal amount of torque. 8AM 5:30PM Mon-Fri, Manual/Standard Transmission Repair & Service, Advanced Transmission Center Lakewood 1194 S Pierce St Lakewood, CO 80232, Advanced Transmission Center Westminster 3686 W. 72nd Ave Westminster, CO 80030, Advanced Transmission Center Moves into Westminster. A leak in the transfer case can result in severe damage. Easy to use parts catalog. Any mechanical part on your car is vulnerable to wear and tear. 2003 Chevrolet silverado. The best way is to take your time.,Set Emerg brake,start vehicle and put into neutral..Engage 4 wheel drive,look at your dash gauge area for 4 wheel drive light to come on..Put truck in reverse and release park brake..,Back up . At most, you will pay $300 for a new one. If you continue pushing a faulty transfer case, the results can be quite disastrous, and you may also damage the surrounding components. The vehicle was not taken to the dealer for further inspection. After getting this part replaced, your vehicle should work as intended. Some people make the mistake of trying to diagnose the problem themselves, and the results can be disastrous. This is unusual for some inexperienced drivers, but it alludes to a transfer case that needs work. The encoder motor on tcase has a high failure rate. Transfer case/differential,service 4x4 lights keep coming on, brakes, shocks, bumper pad falling off, transmission clunking noise, would not start. Can You Put 33 Inch Tires on a Stock Sierra? Dirty fluid is dark in color, and it has a gritty texture. all problems of the 2004 Chevrolet Silverado 2500 General Motors and Chevrolet, NP (New Process) 246 Transfer Case Common Problems and Solutions. Now at 279,000 miles my transfer case goes out again this time leaving me stranded on the wv turnpike. The hole in the image may seem inconsequential, but the reality is grave. After cleaning the transfer case, you should be able to spot the tiny pinhole. Hope this helps. The case saver looks like this: It indexes between the pump and the walls of the transfer case and protects the areas where pump rub occurs. The most recently reported issues are listed below. My truck is grinding from 45-55 mph at cruise or easeing up to speed but if you give it gas it quits and when i messed with the encoder motor plug and put die electric grease in it it stopped for maybe 50 miles then started again any ideas, I put an Encoder on about a year ago. Without it, you would have to lock the wheel hubs manually. The most common cause of this problem is a broken shift fork. What problems does the Chevy Silverado transfer case have? Check the fluid level, and pour in some more if necessary. You can check the fluid level by removing the dipstick from the transfer case. You should also know that its never a good idea to assume new parts are in great shape just because theyre new. Can A Bad Coil Cause Knocking? Sounds like this is a very common problem with gm owners with this type of transfer case. When you go through the above signs of a failing Duramax transfer case, you will realize that most of them are signs of a bad transmission. How Do You Use a Wheel Stud Installer Tool? Sometimes, you hear grinding noises when shifting to a four-wheel mode. Was told by gm that there was no fix. This then results in the transfer case fluid to leak out, and causes the gear box to come apart inside the transfer case. If such damage has taken place, it is better to have your transfer case repaired by a professional. This will include replacing the case half that has the hole in it and is not an inexpensive repair. 1194 S. Pierce I have since replaced both problems but still nothing back from gm. 1995 Chevrolet Silverado cesspool. Changing this fluid is childs play. Alternatively, you can take your car to the dealer. This is a problem that is common in older Duramax engines. You can reach out to either location that is most convenient for you. It can also be caused by a few other things. After that, get in the car. 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