Hi, your guage problem has to do with these little whats called motors. Mine was doing that speedo temp, oil pressure and such. I found out the cluster needed to be rebuilt with new motors. What I found on E Bay a place in Glendale, Az. GM guage Guys, (WWW.GMGuageGuy.com) I talked to a Mike there I pulled the guage cluster (very easy) about 8 minutes to take out. I boxed with good padding not to damage in anyway sent to them and had it back with in 10 days. Also they upgraded all the guage lights to LEDS in any color you like. Hope that helps
