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  1. 6.5L Diesel Engine
    I have a 97 k2500 4x4 auto with the 6.5, and I'm toying with the idea of swapping it for a manual. One reason is it seems to not want to shift into overdrive sometimes. It's a stock transmission with 270k on it. I don't know what maintenance has been done to it. Thoughts?
  2. 4L80/85E Transmissions. 6L90 Transmission
    Please tell me about the 4L80Etransmission of my 1994y GMC SUBURBAN 6.5 DIESEL. My SUBURBAN lost reverse gear and rebuilt the transmission. I put that transmission in my car, and I drove it, and all the gears switched normally. However, manually switch to the 2nd gear and pull out the...
  3. 6.5L Diesel Engine
    I have a 1997 k1500 that I recently bought and pulled the blown 5.7 out and put a 6.5 in. Used differentials, trans, transfer case, and engine from another truck and all the wiring. Swap went great and truck runs well, but for the first drive it has no speedo and is stuck in 1st. It can only go...
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