I might be purchasing an 03 DMax with less than 25k miles. Is there anything I should look for on the vehicle to clue me in to any issues? Where is a good place to have it inspected? I am worried about injector issues, should I be? Thanks for any help, Joe (Livermore, CA)

Send a PM to GMCSID or Cobra (see sticky above) with the VIN, they can look up the vehicle history for you.
As for injector issues, I wouldn't be too worried....they're covered under warranty to 100,000 miles. The 03's may end up with the 200,000 mile extension same as 01-02's do for injectors.

Tom