what does do these mean? these are off my new bonneville

F83?
MX0 - trans, merchandised, overdrive (whats this mean)
M15?
NV8 - steering, magnetic speed, variable assist (explain)
R6J - not on code list.
R6L- not on code list
R9D -?
T37 - ?
28U not on code list
6KJ - component front LH, computer sel susp (explan)
7KJ - component front RH, computer sel susp (explain)
8RW - component RR LH, computer sel susp (Explain)
9RW - component RR RH, computer sel susp (explain)
931 not on list
932 not on list




thanx jim

M15 is a transmission RPO. F83 is as well, but I'm not sure.

I can tell you that the 28U is most likely a paint code.

as for the suspension they are the spring rates that are selected for the car. From what i understand there are multiple spring rates for cars that have the same spring ie FE1. SO that means that FE1 is not the same on all cars. I think the weight of the car and the wheels and a few other things are factored in the to exact spring rate

M15 is the trans.....F83 I thihk is suspension packages. I', not sure on the F83 but I know the M15 for fact.