This 1997 Chevrolet K1500 pick up came in with the speedometer, tach and shift indicator not working sometimes. In testing I also found that there were codes stored related to the TCC (Torque Convertor Clutch) and transmission. P0740, P0785 and P1860. This is a pretty common problem but I was looking for a quick simple … Continue reading 1997 Chevrolet K1500 Pick Up, Tach and Speedometer Inoperative