Few RPO's decoded
AJ1- Deep window tent RR
KC4- Engine oil cooler
GT5- 4.10 gears
LQ4- 6.0
M32- AT 4 speed HMD 4L60E HD
NP3- AWD transfer case
NYS- 4 wheel steer
Y91- Luxury edition
Z82- Trailer provisions special equipment HD
Z88- Brand GMC
The rest of the RPO's are not that interesting to me.
David,
2003 GMC Sierra Denali, LQ4, AWD, AWS, 4.10, Wheatley 93 tune, LT headers, GMPP CAI, BBK 80mm TB, MSD wires, E3 plugs, 160* T-stat, Flowmonster DI/DO, cutouts. Working on 4.8 heads, just purchased Comp 228R cam, 918 Springs, TI retainers, 7.4 hardend pushrods,