THIS IS A 2004 GMC SIERRA EXT CAB 4DR 4X4 SLT2500 ,6.6 DURAMAX DIESEL ENGINE WITH AUTOMATIC TRANS,4X4 WORKS SMOOTH,TRUCK HAS 517.000 MILES AND STILL RUNS GREAT ,YES 517,000 MILES ,THIS IS A ONE OWNER COMPANY TRUCK WELL MAINTAINED AND SERVICED AND A HEAVY DUTY BRUSH GUARD,JUST HAD FRONT TOP BALLJOINTS REPLACED AND A ALIGHNMENT ALONG WITH REST OF FRONT END CHECKED OUT,,,AC BLOWS COLD,PL,PW CRUISE EVERYTHING WORKS AS IT SHOULD,CALLS ONLY WILL NOT ANSAWER TEXTS