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  1. #1
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Jacksonville, FL
    Posts
    16

    Default Broken speedo on a 1999 2500 Suburban...help?

    The speedometer and odometer are not working on my 1999 Suburban 2500 4x4 gov't issue. I replaced the sensor thingy at the transmission, replaced the speedo itself, and I'm at a loss. These don't have a cable, so I don't know what to do - thoughts?

    Thanks,

    Stevo

  2. #2

    Default

    Maybe the fuse? When I first wired in accessories, I used that fuse and it blew out while my wife was driving, which shut the truck down.

    Is yours still running, just no speedo?

    1999 Chevy K2500 Suburban 350
    K&N, reworked cai, Thrush cat-backs
    Vinyl, cranks, floor shift, and rear air!

  3. #3
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Jacksonville, FL
    Posts
    16

    Default

    It runs like a champ, I should have mentioned- it comes 'on' about every 100 miles, just for a few miles and works fine, then dies off...weird......

    stevo

  4. #4

    Default

    Well, I always say "it's a ground issue", but I haven't had the dash apart on mine yet. Something's loosing signal somewhere - I'll see what I can come up with...

    Good luck,

    1999 Chevy K2500 Suburban 350
    K&N, reworked cai, Thrush cat-backs
    Vinyl, cranks, floor shift, and rear air!

  5. #5
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Jacksonville, FL
    Posts
    16

    Default

    Yeah, I wish I could track it.....thanks!

    Steve

  6. #6
    Jr. Apprentice
    Join Date
    Mar 2010
    Location
    Jacksonville, FL
    Posts
    16

    Default Speedo still not working!

    Alright, replaced the dash 3 times, took it to chevy and they say possibly the ECM. But they are not sure and want to charge $700. What to do here? I can get a used ECM this weekend, but will it fix a speedometer?

    Thanks,

    Stevo

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