Hey i just tried the paper clip trick on my 91 LO5, and got code 12, then 24, what is a code 24?
i have the FSM at home (currently in college)
but if i had to guess it would be the ABS one because the light is lit...
But also the SES light comes on ocassionally when driving... and i suspect EGR, if it only throws a code occasionally do i have to read it when the light is lit?
also when the EGR valve goes does it ever make a sound sort of like a diesel engine?