Engine VIN code M. With AFM (cylinder deactivation). Use roller followers.
5.3L / 325 OHV V8 16V LS Series Vortec GM 3.780" Bore 99-14
GM, CHEVROLET
5.3L / 5328 OHV V8 16V "P,M" GM 96.00mm Bore 03-06
ISUZU
GM325T-CH | 5.3L / 325 OHV V8 16V LS Series Vortec GM 3.780" Bore 99-14
CHEVROLET,
GMC,
BUICK,
CADILLAC
IS5328T/GM | 5.3L / 5328 OHV V8 16V "P,M" GM 96.00mm Bore 03-06
ISUZU