Detail: 2004 Silverado 2500HD 6.6 litre Duramax What fluid, and how much to change the transfer case fluid? The truck is automatic (Allison Transmission) and has push button 4WD. Also, I am going to change the transmission fluid and spin on filter, is there another filter inside the tranny sump?
Solution: Most companies that produce oils and fluids for the consumer market publish an application catalogue which is often found online. These provide type and grade recommendations and quantities for many models so choose your favourite brand and search... , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck! , I had the same problem and it ended up being the EGR Valve that was sticking. , Make sure you have the proper amount of tranny fluild in it and get that Valvoline fluid out of it. Allison transmissons have there own type of tranny fluid and you want to use it. You can buy the right stuff from a Allison dealer. Most Detroit Diesel dealers are also Allison dealers. Look them up in your phone book and they will tell you the quanity and sell you five gallon pails of the fluid. Just get the serial number off of the side of the transmisson before you call. Change the fliters again too. Believe me, this is important. My company has Yard horses with Allison transmissions and you don't want to screw with the small stuff. Service them right and they work as hard as you want. , above were your electrical plugin plugs up on the rear left of transmission. that is your output shaft speed sensor. , This model always this problem, usually after about 90,000 miles and the other instruments will eventually follow. There are companies that will repair this for you just use google (instrumentclusters.com) to find them. I was charged 185.00 for the repair... GM wanted over 500.00! , Clicking, especially while turning usually more so points to a problem with the CV joint, or axel, the easiest way to test a wheel baring is to jack up that side of the truck until the tire is off the ground, leave the lug nuts on and try to wobble the tire in all directions, if everything seems solid it is not likely the bearing casuse the sound, another note when a bearing starts to go bad, it usually hums opposed to clicks. Im sorry i dont have a diagram, but this proceedure should get you on the right track in diagnosing the issure, good luck!!