Was that the Isuzu/Chev pickup with the 125hp 2.5l Isuzu engine? /QUOTE]
No, I don't think so.
I'm almost certain that it was the 2.8L V6, which I remember because when I had to make the choice between that and the new 4.3L V6, my dad talked me into getting the 2.8L because he thought it would save me some gas.
But very shortly afterwards, I was unhappy about having chosen the 2.8L, because in reality, the 4.3L provided both better torque and essentially equal MPG, because of the gearing and rear-end changes available with it.
I traded it in for a 1991 Chevy Cavalier for my then fiance [now SWMBO] to drive while i was away in PA [for PA school ironically], and that was THE single worst vehicle transaction I have ever made.
I should have taken the time to teach her to drive standard/manual tranny instead and kept the truck instead.