Reading engine codes


Posted by AlfrmVaBch on December 20, 00 at 05:41:53:

I know this has been covered before, but the search function doesn't work, so I'll ask again...

Can anyone tell me how to read the engine codes for a 94 K1500? I recall a post about jumpering some terminals and counting the flashing lights....
My gas mileage has dropped from 16.5 to 13 on trips, no other symptons, no SES light, etc... Wondering if maybe she's staying in the open loop mode, dumping more fuel?
Thanks, Al

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