I found this in another thread:

1SA option package was the following:

A/C, Door mouldings, power windows, & locks, 4 way seat adjuster, Cruise, remote Deck lid release, mirror with reading lamps, and power outside mirrors.


I do not have:

Power windows
Power locks
Cruise
Remote deck lid release
Power seat
Mirror with lamps
Power mirrors


All I have is the molding and the AC. wtf??

 

RPO decoder is wrong. 1SA is the RPO code for the lowest level option group. All you got was a radio with this group. AC was seperately available option, probably the moulding too.

 

Ok, so what was the exact description of the RPO code? I want to know so I can add it to my list:

16A : STRIPE COLOR, ACCENT, TWO TONE, BLACK/GARNET RED
19Q : MOLDING COLOR (BLACK)
1SA :
41U : PRIMARY COLOR, EXTERIOR, BLACK
6ZW : SPRING, COMPUTER SELECTED, FRONT, LEFT HAND
729 : SEAT BELT COLOR, DK CARMINE (9) (91)
72B : TRIM COMBINATION, CLOTH, DK CARMINE (B)
72I : INTERIOR TRIM, DK CARMINE (91)
72W : TRIM COMBINATION, VINYL, DK CARMINE (W)
89A : STRIPE COLOR, ACCENT, TWO TONE, RED/LT GRAY (91)
8NL : COMPUTER SELECTED REAR LEFTHAND SPRING
9NL : COMPUTER SELECTED REAR RIGHTHAND SPRING
A01 : WINDOW, TINTED, ALL SHADED, W/S
AR9 : SEAT, FRT BKT, EUROPEAN STYLE, PASS A DRIVER RECL
B3E : NOISE CONTROL
B6R : RED IROC-Z ROCKER AND BUMPER EMBLEMS
B84 : ORNAMENTATION, EXTR MLDG, B0DY SIDE
C49 : DEFOGGER, RR WINDOW, ELECTRIC
C60 : HVAC SYSTEM, AIR CONDITIONER FRT MAN CONTROLS
D34 : MIRROR, VISOR VANITY
D35 : MIRROR, OUTSIDE REAR VIEW
D72 :
D80 : SPOILER, RR END PNL
D88 : DECAL, STRIPE, SPORT
E5Z : SPEEDOMETER ADAPTER (DELETE)
E72 : BODY LENGTH, INCR I8 INCH
E9Z : SPEEDOMETER KEY (DELETE)
FE2 : SUSPENSION SYSTEM, RIDE HANDLING
G80 : AXLE POSITRACTION, LIMITED SLIP
GU4 : AXLE REAR, 3.08 RATIO
J50 : BRAKE SYSTEM, POWERD72
K68 : GENERATOR,105 AMP
LB9 : ENGINE, GAS, 8 CYL, 5.0L, TPI, HO
M39 : TRANSMISSION, MAN 5 SPD B0RG WARNER, 77MM, 2.95
MM5 : MERCHANDISED TRANS, MAN 5 SPD PROVISIONS
N65 : WHEEL & TIRE,SPARE, SPACE SAVER, STEEL
N90 : WHEEL, 15 X 7, ALUMINUM CAST, 4.75 INCH BOLT CIRCLE
NA5 : EMISSION SYSTEM, FEDERAL, TIER O
NP5 : STEERING WHEEL, LEATHER WRAPPED
PB4 : LOCK CONTROL, WHEEL
QYZ : TIRE ALL, P215/65R15/N BL R/PE ST TL HWY
T93 : LAMP, TAIL & STOP, SPECIAL
T96 : LAMP, FOG
U79 : SPEAKER SYSTEM, 4, DUAL FRT COAX, DUAL EXT RGE PKG
UM6 : RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV CASS
UQ1 : RADIO PROVISIONS, FOR STEREO
V73 : ANTENNA, FIXED
VAN : ASSEMBLY PLANT, VAN NUYS, CA
W62 : ORNAMENTATION, AERO PACKAGE
WW4 : APPEARANCE PACKAGE, AERO #4
Z28 : MERCHANDISED PKG, SPECIAL PERFORMANCE

 

The Camaro white book for 1988 lists it as FZA1 Iroc-Z base group. But it is the same as RPO 1SA.

Basically it says FZA1 had RPO UM7 radio. Obviously the radio could be upgraded, as yours was, to UM6.

There is no more description than that, in the book.

 

Here is your 1SA RPO code.

1SA- Option Group #1 (1988) N33, AO1, CD4 (Non-GT)

Are you sure that your RPO D72 isn't D7Z?

D7Z=Gear, Speedo driven

The Trickster!!!!!!!!!!!