Benny1000
Newbie
I have a 91 gmc that originally came with sweeper style gauges, the tach quit working then the speedo went out. I tried finding another cluster but it hard to find the proper replacement. I grabbed the clister and drac out of a 93 and wired in the new harness and drac harness. all my gauges seem to work and tach is working, I followed a recalibration formula for the drac and the speedo also seems to work ,but the problem I’m having is that as soon as I get moving maybe 20 kph( Canadian, lol) my torque converter locks up. If you tap the brake it unlocks then locks again.Not sure if there was something I missed or maybe the original vss doesn’t have the same signal? Scratching my head on this one.