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Super Moderator
2003 Express Van 6.0L Drive by Cable 4L80E OS 12579405
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HD Emissions Calibration
I hope this helps everyone learn about the rear O2 sensor effect on the fueling.
O2 flyback
Code Description Code Description
1SA -- BASE DECOR INCLUDES: * AIR COND, DUAL ZONE MANUAL * 40/20/40 SEATING
1SZ -- PREFERRED EQUIPMENT SAVINGS
50U -- SUMMIT WHITE/LT PEWTER MET
69I -- DK PEWTER INTERIOR TRIM
69V -- DARK CHARCOAL-VINYL 6GK FRONT SPRING
7GK-- FRONT SPRING
9W9 -- PICK-UP BOX DELETE
AE7 -- 40/20/40 SPLIT BENCH RECLINING FRONT SEAT
AM7 -- FOLDING REAR SEAT
B71 -- WHEEL OPENING FLARES
C6W -- GVW RATING - 9,200 LBS
CJ3 -- AIR COND., DUAL ZONE MANUAL
DF2 -- OSRV EXTENDABLE CAMPER STYLE MIRRORS
FE9 -- FEDERAL/NY/VT EMISSIONS
FT2 -- ARM TORS BAR SPRING ADJ
FT3 -- ARM TORS BAR SPRING ADJ
G80 -- LOCKING DIFFERENTIAL-REAR AXLE
GMC -- ASSEMBLY PLANT-PONTIAC EAST
GT5 -- REAR AXLE - 4.10 RATIO
HVY -- IDEN 2 INCH BODY RAISE,HD MODEL
JH6 -- 4 WHEEL POWER DISC BRAKES, HD
K68 -- 105 AMP DELCOTRON GENERATOR
KC4 -- ENGINE OIL COOLING SYSTEM
KNP -- HD AUX TRANSMISSION COOLING SYS
KUP -- THROTTLE CONTROL ELECTRONIC
LQ4 -- VORTEC 6000 V8 SFI GAS ENGINE
MT1 -- HD 4-SPD AUTOMATIC TRANSMISSION
NA4 -- HEAVY DUTY EMISSIONS
NT9 -- EMISSION SYSTEM FEDERAL TIER 2 PHASE OUT
QIZ -- LT245/75R16/E ALS BW TIRES
R6C -- COMMERCIAL UNITS IDENTIFIER
R8A -- LAM INVOICE EXEMPTIONS
R9Z -- POMS EXPEDITE-SOLD ORDERS
SLM -- STOCK ORDERS
UM7 -- AM/FM STEREO W/4 SPEAKERS
UQ5 -- EXT RANGE SOUND FRT&RR SPKRS
V73 -- STATEMENT OF VEHICLE CERT.-U.S. /CANADA
VF7 -- REAR STEP BUMPER DELETE
VG3 -- FRONT DELUXE CHROMED BUMPER
VXT -- INCOMPLETE VEHICLE LABEL
X88 -- CHEVROLET CONVERSION
XHH -- LT245/75R16/E ALS BW TIRES-FRNT
YD3 -- BASE EQUIP FOR SCH GVW PL-FT AX
YD6 -- BASE REAR SPRING
YHH -- LT245/75R16/E ALS BW TIRES-REAR
YK6 -- SEO IDENTIFICATION
Z85 -- HEAVY DUTY SUSPENSION
ZY1 -- SOLID PAINT ~BO
Last edited by Caleditor; 03-14-2014 at 06:13 PM.
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03 Silverado 1500 5.3L stock
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