Help!

My tach and clock don't work. The oil gauge seems to run high. Speedo/gas gauge work fine.

How big a deal is it to get the gauge cluster off? Also, the tach cable seems to be intact. Fuses are good.

Thanks!

__________________
83 SD 143 K miles
93 Grand Caravan 130K miles
92 Buick Regal (winter car)