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Old February 3rd, 2010, 09:07 PM   #1
don4life
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Default eletrical problem with dash?

GOTTA LOVE NEW/OLD VEHCILES!!

ok just bought 95 k2500 suburban and it only shows around 10-12 volts on the voltage gauge, but i get over 14 at the battery, also the fuel gauge moves around like its possesed and now the speedometer works then doesn't work the starts to work and then doesn't work at all.

So i wanted to check and see if anyone has had same problem, is it electrical or just need to change the dash cluster out??
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Old February 3rd, 2010, 09:10 PM   #2
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Check from chassis ground to pos terminal on the battery. Or test resistance from the negative on the battery to the chassis.
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Old February 3rd, 2010, 10:51 PM   #3
86scottsdalek10
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i had a 1990 sierra that had a bad chassis ground that threw off my voltage but the gas gauge was a sticking float on the sending unit
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Old February 4th, 2010, 12:59 AM   #4
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Quote:
Originally Posted by 86scottsdalek10 View Post
i had a 1990 sierra that had a bad chassis ground that threw off my voltage but the gas gauge was a sticking float on the sending unit
x2

Had the same issue on 90 k1500, was a bad ground. I would recommend checking/cleaning all ground attachment points. Replace any bad cables with 4ga wire if needed. Took care of my problem.
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Old February 4th, 2010, 01:45 AM   #5
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Is this with it running?? Seen gauges fruit out like this when the alternator was on the way out too.

If not prob is your ground somewhere.
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Old February 6th, 2010, 11:07 AM   #6
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thank you guys very much!! Just added a ground from motor to frame and everything seems great it even feels like it runs alot stronger!!!
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