2001 Duramax equipped vehicles, VIN code 1, 8th digit is “1”.   Choose from refurbished/used and pre-tested A or B-Grade, as well as Factory New:  applicable warranty is included when purchased with programming.  Contact us with any fitment questions before placing order.  A $99 (Refundable) core charge will be applied at checkout, return shipping instructions provided.

GM service number 09388505 or 97780077