This listing is for 12574976 PCM that will be programmed to your VIN. This PCM fits/
2003-2005 4.2L GMC Envoy/Envoy XL
2003-2005 4.2L  Chevy TRAILBLAZER
2003-2005 4.2L OLDSMOBILE BRAVADA

-NO core charge. 
-Programmed to your VIN.

-IMPORTANT:
match your PCM/ECM service number before purchase.
This module needs 30 minute security key relearn, and may need crankshaft variation relearn (code P0315/P1336 ). You will need a scan tool capable of doing this relearn.
send your 17 digit VIN through ebay massage or at the time of the payment. 

 We offer 1 year warranty on this item.
 Shipped via USPS Priority Mail.