2003 H2 Hummer 4x4 rear differential lock only 100,000 original miles no mechanical issues no overheating no leaks shift smooth California SUV no rust at all always serviced on time just recently gave it. It’s 100,000 miles service one of the best drive trains and engines GM produced. is equipped with the 4 x 4 rear differential lock very hard to find them with low miles. Please do research usually send them with over 200,000 miles and above and ran down. This wasn’t recondition well taken care of adult driven non-pet vehicle non-smoker vehicle. Everything works power windows power door locks navigation system tilt will keyless entry from any more questions or information. Please let me know. Thank you so much.