Looks like if you have a DRAC you can make 2000 and feed it to your 91 gauges. Just stash it behind your radio or in the glovebox where it goes and have it for nothing else but the gauges. If you want me to email you the 2meg DRAC2.pdf, its got lots more good info. Or see if you can still find it on the net, its been floating around for a good while. hope this helps.
Last edited by r6z4o6; 05-21-2008 at 07:29 PM.
1991 Silverado ECLB
LM7-T56
Well my little trauma over ppm's was all for nothing.
I installed my 91 Suburban cluster tonight.
I took the speedometer wire from my 2000 ECM and hooked it to my 91 cluster...no DRAC's...just hooked it up direct.
Works great...dead nuts on...very accurate.
The rest of the gauges work good also...temp, alt, fuel, oil pressure.
The temp reads a little low (190 on the scanner reads about 160-170 on the gauge.)
I'll post some pics of the repinning of the connector and some wiring diagrams on Tues. (Just for future search and reference sake.
Thanks again to all who helped. listless, pcmcobra, RedHeartbeat, thanks.
Mike.
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