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Drives

Found 4 results

  1. Have an 03 gmc 2500hd that ive been slowly rebuilding and just passed inspection it used to have service 4wd untill i cleaned up the driver side grounds and started to shift fine atleast long enough to pass, until today it shifted by itself into 4low by itself once i turned the truck on now it will not come out even in neutral tried going R-N-D-R-N...etc to kick it back on but no luck, confirmed it wasn't the 4x4 selector buttons, its not pulling any codes at least on my scan tool. hitting up the junk yard tomorrow just going to grab a used tccm, actuator off the front diff and transfer case shift encoder since they are all super easy to pull and dirt cheap at my local junk yard and i have nothing but time at the moment. just wondering if any of you guys have had good/bad luck with any of those parts failing on you and causing the truck to get stuck into 4low/hi or the truck shifting into those selections by itself. and what your fixes and problems were. thanks guys!
  2. Have an 03 gmc 2500hd that ive been slowly rebuilding and just passed inspection it used to have service 4wd untill i cleaned up the driver side grounds and started to shift fine atleast long enough to pass, until today it shifted by itself into 4low by itself once i turned the truck on now it will not come out even in neutral tried going R-N-D-R-N...etc to kick it back on but no luck, confirmed it wasn't the 4x4 selector buttons, its not pulling any codes atleast on my scan tool. hitting up the junk yard tomorrow just going to grab a used tccm, actuator off the front diff and transfer case shift encoder since they are all super easy to pull and dirt cheap at my local junk yard and i have nothing but time at the moment. just wondering if any of you guys have had good/bad luck with any of those parts failing on you and causing the truck to get stuck into 4low/hi or the truck shifting into those selections by itself. and what your fixes and problems were. thanks guys!
  3. Hello, Let me start by saying I have almost zero mechanical aptitude. Engines are magical beings to me that somehow have been transported into our world from a parallel universe by an alien race. I once thought I had to put oil into the engine through the dipstick hole... Hopefully that paints a clear enough picture... I have a 2003 Chevy Silverado 2500HD that is having issues with switching in and out of 4 wheel drive. I took it to a mechanic and they told me the Transfer Case Control Module needed to be replaced as it was no longer communicating with... something, I seriously don't remember what exactly they said. I do remember they said it was going to be just over $500.. now numbers, I do understand; and that's a higher number than I am comfortable with. My truck's 4 wheel drive selection switch has 3 buttons (2wd, 4hi, and 4lo). The TCCM for the three button model is over $300, but the TCCM for a 4 button switch (auto 4wd plus my three) is like $160, much better for my numbers. Here is my question... If it's a stupid just scroll back up and read about the dipstick hole; Can I use the TCCM for the 4 button in my truck even though I only have the 3 button switch? Or can I use the TCCM for the 4 button switch and replace my switch with the 4 button switch? The back of the TCCMs appear to be the same, only 3 connector ports for the wiring harness, so I thought I'd ask. In case anyone is cringing over the thought that I might attempt this repair myself, take a breath, I'm going to pay a colleague at work to do the install and hopefully save a little money. Thanks, Chris
  4. hello all, I am sure this issue has been beat to death multiple times, but I cant find the answer. I have a 2005 Silverado 1500 z71, I have had this issue for about 2 years now. the issue being that no matter what part I replace my 4wd wont reliably work. here is a list of what parts have been replaced. Drivers side wheel hub- twice Passenger Side wheel hub- three times Diff. actuator- twice 4 button switch on dash- once TCCM- once Transfer case motor- once So what is happening is, the dash will read service 4wd, i have taken it in to a shop where they have been replacing the parts, and i have come to the conclusion they are just throwing parts at it to find a fix. Every time they would replace a part it will work about 2-3 days but then give me the same service 4wd message. if i push one of the 3 4wd buttons on the switch the light will blink for a while then stop and it seems like it doesn't shift into 4wd. But i have crawled under the truck while someone else selects a 4wd button, I can hear and feel the transfer case changing into to 4wd mode. but the front diff actuator does not engage. I have checked and cleaned the ground wire under the drivers door twice but that doesn't seem to help. I am done throwing money at the shop to fix it, so this is my last resort. any help or ideas is greatly appreciated, Thank you,
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