You may also have a ground problem. I had to run a ground to one of the posts on the gauge itself. I've never had a problem since. That metal backplate has a tendency to rust and after several times on and off, will not fit tightly.
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1970 Chevy C-10 350,3 spd
1998 Pontiac Firebird
1999 GMC Envoy
Harvest,AL 35749
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1981 K5 Blazer 305, 4spd, 4x4, 4" Lift, custom bumpers, Warn 9.5 Ti Winch
1995 T10 Blazer 4.3L 4x4 (Son's)
2004 GMC Envoy 4.2L 2WD
2005 GMC Sierra Crew Cab Z71 4x4 5.3L
240 Fun Finder Travel Trailer
Harvest, AL 35749
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