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05-20-2015, 06:10 PM
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I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Suburban Speedo, Need help!
I swapped in a cluster from a 1990 Suburban into my '85 with an LS swap.
I had the PCM programmed for my gear ratio (3.73) and my tire size (315/35-20; 28.68" tall). I have 2 issues, one of which bugs the piss out of me. The Speedo reads slow. Speedo shows 25 mph, by my GPS I am doing 41-42mph. Has only one else had the speed read incorrectly when doing this swap? Second is the turn indicator lamps come on when you turn on the headlights. This only bugs me at night...The signals work but when I turn on the emergency flasher, nothing flashes... If I can get some help with the Speedo, I think I can track down the indicator light problem, I just need some time to think that one thru... Anyone got any ideas on the Speedo?
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Karl  1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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