Sorry to hear about that Mike! I've never had nothing but stellar track records from all my Isuzus over the past 20 years, but there's bound to be a few "problem children" with anything mass produced. Then again, with the increase of GM-sourced components in many of the last models it shouldn't be so surprising I guess.

Keep us updated, hopefully it turns out to be something simple and hopefully corrected more permanently. You may want to peruse Isuzu TSB's in the meantime, just in case there's an illiterate service manager involved.