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1-7 of 7 Results
  1. Gauges, Electronics and Wiring.
    2001 GMC Sierra 2500HD CCLB, stock tire size, EFI Live, 160K miles. I'm wanting to recal my speedo and wondering if there is a cheap tuner/programmer or something out there that will do so (under $300?). I'm not looking for a tune or anything as I already have EFI Live. The speedo works fine and...
  2. Gauges, Electronics and Wiring.
    I have a 2006 lbz. the speedometer doesn’t work (not the stepper motor) the abs light and break light are on. dash says service break system, check engine light reads “U0100 Lost Communication with ECM/PCM A” truck shifts around 2500 rpm. Also i have a 30 sec wait to start even in summer. and i...
  3. Drivetrain
    Click this to see the Video of what’s going on. This is a 2007 Sierra 2500HD classic with an LBZ. It’s always done this since I’ve had it and I would like to fix it. When I drive the truck in low range, I will get an ABS / Service Brake System warning and the speedometer drops to zero...
  4. 2020+ (Non Powertrain)
    Hello group. I just traded in my 04 duramax on a 21. I used a Diablo sport tuner on my old ride to change tire size when I switched between my chrome summer wheels and my factory aluminum winter wheels. I am looking to buy a new scan tool to do the same on my new truck. Any suggestions? Thanks
  5. 06-07 LBZ & LLY Duramax Powertrain
    Ok sorry for the wall of text, but there is a lot of info for my problems, Thank you for reading. So I posted a few days ago about an oil leak on the passenger side and found that there was a fair amount of oil pooled in the ERG cooler. After it all drained out and I re-tightened the bolts to...
  6. Gauges, Electronics and Wiring.
    After, I had left the ignition on and ran the battery down. I had to jump it off, of course. Now the speedometer, max's out to 85 and I assume the governor kicks in. The truck thinks I'm doing 85mph, but the fast as it will go is 37 mph. I know this by GPS, I disconnected the batteries...
  7. Gauges, Electronics and Wiring.
    For a while now my speedometer has been reading random speeds, it started by reading 20mph above my actual speed, and now it's pretty much stuck on 120mph. from time-to-time, it would read the correct speed, but it was a crap shoot if it was right everytime I drove my truck down the road...
1-7 of 7 Results