I posted in the wanted section for a speedometer for my '90 Suburban. I didn't post that it need to be electric because I was told that all '90-'91 Suburbans and Blazers had electric speedometers. I've had a few responses, but they were for cable type speedometers that were supposed to have come from a '90 Sub's. Were there both types in '90? Mine is electric, with trip odo.,100,000 mile odo. 85 mph.