Re: 1989 gmc s15 pickup gives only 12 miles per gallon
What motor does this have? 2.5L, 2.8L or a 4.3L? Is the service engine soon light on?
As far as tune-up parts, I stick with AC delco on most everything but the wires for wires, I prefer Taylors.
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69 Chevy C10
88 Sierra
02 2500 Suburban
And too many S10s to list!
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