Kennedy's LB7 tune should come stock from the factory on every Duramax from 2001 - 2004.5, in my opinion.
Highly recommended...I towed over 200K miles with this tune. Better than stock in every measurement!
Kennedy's LB7 tune should come stock from the factory on every Duramax from 2001 - 2004.5, in my opinion.
Highly recommended...I towed over 200K miles with this tune. Better than stock in every measurement!
2011 Chevrolet Tahoe 5.3L daily driver
- Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
- Total GM diesel miles to date : ~950K