Quote Originally Posted by pcmcobra View Post
hmmm another guy on fsc said he just repinned his speedo connector for 91 burb elec speedo and his worked fine.
I'm using the same speedo, (91 Suburban)...Maybe I have wrong info on the pulses per mile on the early style electric speedo heads???

Could someone double check my research???

4000 pulses per mile out of the ECM to the speedo, late model C/K?

2000 pulses per mile out of the DRAC's module to the speedo head, R/V model?