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    Hydroboost pedal question?

    I am doing a hydroboost swap on my 91 gmc c2500 with all 94 parts. My truck is a automatic but I found a brake pedal that came from a 5 speed. Will the pedal swap right in or do I need one from a auto? I know the 5 speed pedal pad is smaller.
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    Correct fittings?

    I have searched and can't get a correct answer. I have a 1991 GMC Sierra C2500 with the 4L80e. The radiator has the transmission and oil cooler built in. I want to add a external transmission cooler. I am adding AN fittings and lines. The output side of the stock radiator for the transmission...
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    Speedo not working correctly

    My truck is a 91 c2500 with the 4l80e. The trip odometer on my Speedo doesn't work but the overall mileage odometer on the vehicle does. What could the issue be? Sent from my SAMSUNG-SM-N920A using Tapatalk
  4. P

    Microphone placement

    I have a 91 GMC c2500. I just bought a Kenwood CD player with Bluetooth. What would be the best place to mount the external microphone? Sent from my SAMSUNG-SM-N920A using Tapatalk
  5. P

    Transmission issue

    I have a 91 C2500 5.7L 2wd. From what I looked up it has the 4l80e in it. When the transmission warms up after about 5 miles, it will downshift into 3rd gear and won't shift back into 4th. After I park and turn the truck off and then start going again. It will shift fine into 4th then after a...
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    Check engine light

    Today in was on the freeway and I went to pass some and under wot I heard a loud and quick tapping sound. Then the service engine soon light came. I got home and I noticed also that the a.c. compressor clutch was engaged all the time and not cycling on and off like normal. My truck is a 91 c2500...

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