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  1. Chevy Silverado Forum (GMC Sierra)
    I have a 2005 Silverado 2500hd, recently I had a PO756 code come up, so I replaced the B solenoid which I assumed was causing all my troubles and the code to throw. After I replaced it and the filter/fluid I’m still having the same issues…. Won’t shift in D will shift up/down in manual once or...
  2. GM Powertrain
    Hello, Swapping out a 700r4 for a 4L80E in a 92 RCSB. Using a TCI EZ-TCU as the Trans controller. Want to keep the factory gauges, etc. The VSS coming off the 700 is a 2 wire twisted pair. Can I tap into the rear output wires on the 4L80E to keep the DRAC happy? The TCI unit has a single...
  3. General Chevy & GM Tech Questions
    I have a 2005 2500hd Sierra crew can 4x4 6.0 with a 4l80e that’s over heating and can’t figure out why. I’ve replaced the rad trans cooler cooler lines tranny temp sensor and the torque converter. Tranny shifts great just over heats flushed three times three different filters nothing on the...
  4. Chevy C/K Truck Forum
    I just bought a 1997 k2500 5.7l Vortec 4l80e Trans. 243c Trans. Case Push button 4x4 When I go to engage the 4x4 (hi & lo) it clicks underneath the truck (sounds as if it engages), but the lights continuously blink. I replaced the front actuator, and also replaced the 4x4 switch on the dash...
  5. Chevy C/K Truck Forum
    We recently needed to buy a reliable 4x4 and found a deal on a seeming great shape, high mileage but well cared for, 2007 Suburban K2500 LS 6.0. Previous owner seems to have done well, caring for it mechanically. But it recently began a strange problem. At highway speeds, without need, it...
  6. Chevy C/K Truck Forum
    Ok so I'm new to chevys, new to California and this is my first rebuild. I got a 95 chevy k1500 Silverado 5.7L V8 350 with TBI, taking old motor out, still runs but want a bit more power. Am I able to put vortec heads from a 96 on my 95 block? Or just swap out with the 96 and be able to pass the...
  7. GM Powertrain
    I’ve been told my transmission is going out but also that it could just be a bad the torque converter when I’m driving the rpms will go up till about 4000 put the speedometer won’t move at all it feels and sound as if I was in neutral
  8. Chevy Suburban Forum (GMC Yukon XL)
    I have a 2001 suburban 2500 4x4 build with lift and big tires, I am considering lowing differential gear ratios, to maybe 4.56 with a 6.0 and 35 inch tires (has 3.73 now). I noticed the first gear in the 6 speed is much deeper and would be much peppier on the street and a lot better at off road...
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