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GM OPTION Codes- G through M
All codes are in alphabetical order.


GM RPO Codes

G11 : RATIO, TRANSAXLE FINAL DRIVE 2.56

G31 : SPECIAL REAR SPRING

G32 : REAR SPRINGS

G33 : REAR SPRING, LEFT SIDE

G34 : REAR SPRING, RIGHT SIDE

G44 : AXLE REAR 3.07 RATIO

G50 : SPRING REAR, HEAVY DUTY, VAR 1

G51 : SPRING REAR, HEAVY DUTY, VAR 2

G52 : SPRING, RR, 15000 LBS

G5O : SPRING REAR, HEAVY DUTY, VAR 1

G60 : SPRING REAR, AUXILIARY

G66 : LEVEL CONTROL, MAN, AIR

G67 : LEVEL CONTROL, AUTO, AIR

G69 : LEVEL CONTROL, AUTO, AIR, HD

G72 : AXLE REAR, 2.14 RATIO

G74 : HEAVY DUTY SUSPENSION

G75 : AXLE REAR, 3.62 RATIO

G76 : POSITRACTION REAR

G80 : AXLE POSITRACTION, LIMITED SLIP

G81 : POSITRACTION REAR AXLE

G82 : AXLE REAR, 4.56 RATIO

G84 : AXLE REAR, 4.10 RATIO

G86 : AXLE, REAR, LIMITED-SLIP

G87 : RING GEAR, 8.50 INCH

G89 : RING GEAR, 7.50 INCH

G91 : SPECIAL HIGHWAY REAR AXLE RATIO 3.08

G92 : AXLE REAR RATIO, PERFORMANCE

G94 : AXLE REAR, 3.31 RATIO

G95 : AXLE REAR RATIO, ECONOMY

G96 : AXLE REAR, 3.55 RATIO

G97 : AXLE REAR, 2.73 RATIO

GH0 : AXLE REAR, 3.54 RATIO

GH2 : AXLE REAR, 2.29 RATIO

GH3 : AXLE REAR, 2.77 RATIO

GH4 : AXLE REAR, 2.92 RATIO

GK9 : AXLE REAR, 4.63 RATIO

GL3 : AXLE REAR, 6.17 RATIO

GM1 : AXLE REAR, 2.59 RATIO

GM3 : AXLE REAR, 3.45 RATIO

GM8 : AXLE REAR, 2.56 RATIO

GMC : PLANT CODE PONTIAC, MI, USA

GN9 : AXLE REAR, 4.11 RATIO

GQ1 : AXLE, STD RATIO

GS1 : AXLE REAR, 2.73 RATIO

GS3 : AXLE REAR, 3.73 RATIO

GS4 : AXLE REAR, 3.70 RATIO

GS5 : AXLE REAR, 4.11 RATIO

GS6 : AXLE REAR, 4.56 RATIO

GT1 : AXLE REAR, 2.56 RATIO

GT2 : AXLE REAR, 2.29 RATIO

GT4 : AXLE REAR, 3.73 RATIO (DUP WITH 5 X 1)

GT5 : AXLE REAR, 4.10 RATIO (DUP WITH GT8)

GT7 : AXLE REAR, 3.33 RATIO

GT8 : AXLE REAR, 4.10 RATIO (DUP WITH GT5)

GTY : AXLE, WIDE TRACK

GU1 : AXLE REAR, 2.41 RATIO

GU2 : AXLE REAR, 2.73 RATIO

GU4 : AXLE REAR, 3.08 RATIO

GU5 : AXLE REAR, 3.23 RATIO

GU6 : AXLE REAR, 3.42 RATIO

GV1 : AXLE REAR, 2.73 RATIO

GV2 : AXLE REAR, 5.83 RATIO

GV3 : AXLE REAR, 3.08 RATIO

GV4 : AXLE REAR, 3.36 RATIO

GV5 : AXLE REAR, 3.55 RATIO

GV7 : AXLE REAR, 4.11 RATIO

GV8 : AXLE REAR, 2.72 RATIO

GW2 : AXLE REAR, 2.56 RATIO

GW3 : AXLE REAR, 2.56 RATIO

GW4 : AXLE REAR, 3.31 RATIO

GW5 : AXLE REAR, 2.73 RATIO

GW6 : AXLE REAR, 3.27 RATIO

GW8 : AXLE REAR, 4.10 RATIO

GW9 : AXLE REAR, 2.93 RATIO (DUP WITH GU3)

GWL : SPRING, RR, 9000 LBS CAPACITY

GX1 : AXLE REAR, 3.70 RATIO

GX2 : AXLE REAR, 3.07 RATIO

GX3 : RATIO,TRANSAXLE FINAL DRIVE 3.33

GY2 : AXLE REAR, 3.31 RATIO

GYS : RATIO TRANSAXLE FINAL DRIVE 3.65

H01 : AXLE REAR, 3.07 RATIO

H04 : AXLE REAR, 4.11 RATIO, SINGLE SPEED

H05 : AXLE REAR, 3.73 RATIO

H12 : AXLE REAR, 21000 LBS, EATON 21065S, SINGLE SPEED

HA3 : AXLE REAR, 5.29 RATIO, SINGLE SPEED

HC4 : AXLE REAR, 4.56 RATIO

HC7 : AXLE REAR, 5.13 RATIO, 7500 LBS, SINGLE SPEED

HC8 : AXLE REAR, 3.21 RATIO, SINGLE SPEED, TRUCK

HE3 : AXLE REAR, 3.07 RATIO, 3500 LBS, SINGLE SPEED,

HF7 : AXLE REAR, 4.56 RATIO, 10000 LBS, DANA 70, SINGLE

HF8 : AXLE REAR, 4.88 RATIO

HK1 : AXLE REAR, 2.87 RATIO

HK9 : AXLE REAR, 5.86 RATIO 10000 LBS, SINGLE SPEED

HOT : APPEARANCE PACKAGE GMC “HOT TRUCK”

HPR : HEADLAMPS, DUAL, RECTANGULAR

I5J : TRIM COMBINATION, CLOTH, MED SLATE GRAY (J) (91)

I5Q : MOLDING COLOR, MED GRAY MET (91)

IF3 : TRIM, INTERIOR DESIGN

IFD : TRIM, INTERIOR DESIGN

IL2 : TRIM-INTERIOR DESIGN

IL3 : TRIM-INTERIOR DESIGN

ILC : TRIM-INTERIOR DESIGN

ILD : TRIM-INTERIOR DESIGN

IPC : TRIM-INTERIOR DESIGN

ISE : TRIM COMBINATION, CLOTH, OK CHARCOAL, (E)

ISZ : DISCOUNT OPTION PACKAGE (VALUE GROUP)

J1F : BRAKE PROVISION SPECIAL TO SUIT FOREIGN REGULATION

J41 : BRAKE SYSTEM, PWR, FRT DISC, RR DRUM, CAST IRON

J42 : BRAKE SYSTEM, PWR, FRT DISC, RR DRUM, ALUMINUM

J50 : BRAKE SYSTEM, POWER

J52 : FRONT DISC BRAKES

J55 : BRAKE SYSTEM, HEAVY DUTY

J56 : SPECIAL HEAVY DUTY BRAKE PACKAGE

J61 : DRUM BRAKES

J65 : BRAKE SYSTEM, PWR, FRT & RR DISC

J81 : INDICATOR SWITCH, EXPORT

J85 : BRAKE SYSTEM, PWR, FRT & RR DISC

JA1 : BRAKE, LIGHT WEIGHT DISC DRUM

JA2 : BRAKE, HEAVY WEIGHT DISC DRUM

JA3 : BRAKE, SYSTEM, WAGON DISC DRUM

JA4 : BRAKE, SYSTEM, PWR FRT DISC, RR DRUM, CAST IRON

JA5 : BRAKE, SYSTEM, SPORT COUPE DISC DRUM

JA6 : BRAKE, EXTRA LIGHT WEIGHT DISC DRUM

JA7 : HANDLE, PARK BRAKE RELEASE, LEATHER

JA8 : BRAKE, MEDIUM WEIGHT DISC DRUM

JAF : BRAKE, PROVISIONS EUROPE

JB1 : BRAKE, MANUAL, DISC/DRUM, 4300 LBS

JB3 : BRAKE, POWER, DISC/DRUM, 4600 LBS

JB5 : BRAKE, POWER, DISC/DRUM, 6400 LBS

JB6 : BRAKE, POWER, DISC, DRUM 7200 LBS

JB7 : BRAKE, POWER, DISC, DRUM 8400 L85

JB8 : 8RAKE, POWER, DISC, DRUM 10000 LBS

JC4 : BRAKE, POWER, DISC, DRUM 5600 LBS

JC5 : BRAKE, VAC POWER, 4-WHEEL DISC, 7200 LBS

JC7 : BRAKE, POWER, DISC/DRUM, 12000 LBS

JCB : BRAKE, POWER, DISC/DISC, 20000 LBS

JD3 : BRAKE, HYD POWER, DISC/DRUM

JD5 : BRAKE, DUAL POWER, DISC/DRUM, 6400 LBS

JD6 : BRAKE, HYD POWER, DISC/DRUM, 7200 LBS

JD7 : BRAKE, HYD POWER, DISC/DRUM, 8400 LBS

JE1 : BRAKE, SYSTEM, EUROPE

JE5 : BRAKE, SYSTEM, PWR, ANTILOCK, FRT & RR WHL

JF9 : BRAKE, HYD POWER, 4 WHEEL DISC

JG1 : SHAFT, PROP, ALUMINUM

JH5 : BRAKE, HYD POWER, 4-WHEEL DISC, 7200 LBS

JH6 : BRAKE, HYD POWER, 4-WHEEL DISC, 9900 LBS

JL2 : BRAKE, FRT DISC, SINGLE PISTON

JL4 : ACTICE HANDLING

JL6 : BRAKE, SYSTEM, MAN, FRT DISC, RR DRUM, CAST IRON

JL8 : FRONT & REAR DISC BRAKES

JL9 : BRAKE, SYSTEM, PWR, FRT a RR OISC, ANTILOCK, FRT W

JM3 : BOOSTER, BRAKE, 240MM TANDEM, HIGH FLOW

JM4 : BRAKE, SYSTEM, PWR, FRT DISC, RR DRUM, CAST IRON,

JM5 : BOOSTER, BRAKE, 200MM TANDEM, HIGH FLOW

JM7 : BOOSTER, BRAKE HYD HI PERF, DELCO-MORAINE

JM8 : BRAKE SYSTEM PWR, FRT DISC RR DRUM, ALUMINUM,

K01 : FAN, CLUTCH DRIVE, ON/OFF

K02 : CLUTCH FAN

K05 : HEATER, ENGINE BLOCK

K06 : FAN, ENG COOLING

K07 : HEATER, FUEL

K09 : GENERATOR, 120 AUP

K10 : CORD, ENG BLOCK HTR ----- DELETE

K15 : LINES, FUEL VAPOR RETURN

K19 : REACTOR SYSTEM, AIR INJECTION

K20 : MODULE, ELECTRONIC COHTROL

K21 : ENGINE CONTROLLED COMBUSTION SYSTEM

K22 : GENERATOR, 94 AMP

K24 : CLOSED VENTILATION PCV

K30 : CRUISE CONTROL, AUTOMATIC

K34 : CRUISE CONTROL, AUT0MATIC, ELECTRONIC

K35 : CRUISE CONTROL, VACUUM RESUME

K42 : GENERATOR,124 AMP

K45 : AIR CLEANER, HEAVY DUTY

K46 : AIR CLEANER, HEAVY DUTY, PRE-CLEANER

K47 : AIR CLEANER HIGH CAPACITY

K53 : FUEL SENDER ASSEMBLY, ROBUST FUEL SYSTEM

K60 : GENERATOR, 100 AMP

K61 : GENERATOR, 97 AMP

K64 : GENERATOR, 78 AMP

K65 : GENERATOR, 95 AMP

K66 : TRANSISTOR IGNITION SYSTEM

K68 : GENERATOR,105 AMP

K69 : KEY ADDITIONAL IGNITION

K70 : PULSAIR, AIR INJECTION, ENGINE

K72 : EMISSION CONTROL DELETE

K73 : GENERATOR, 70 AMP

K75 : EMISSION CONTROL DELETE

K76 : GENERATOR, 61 AMP

K77 : GENERATOR, 56 AMP

K79 : GENERATOR, 42 AMP

K81 : GENERATOR, 66 AMP

K82 : GENERATOR, 75 AMP

K85 : GENERATOR, 37 AMP

K90 : GENERATOR, 108 AMP

K91 : GENERATOR, 65 AMP

K96 : GENERATOR, 55 AMP, BUILT-IN REGULATOR

K97 : GENERATOR, 80 AMP, BUILT-IN REGULATOR

K99 : GENERATOR, 85 AMP

KA1 : HEATER SEAT

KB2 : HEADS ENGINE CAST IRON

KB9 : CONTROL, ELECTRONIC, TRANS SHIFT

KC4 : COOLING SYSTEM, HEAVY DUTY ENGINE OIL

KD1 : COOLING SYSTEM, TRANS OIL

KD5 : HEATER, ENGINE BLOCK

KG0 : GENERATOR, 74 AMP

KG6 : GENERATOR, 96 AMP

KG7 : GENERATOR, 125 AMP

KG8 : GENERATOR, 130 AMP

KG9 : GENERATOR, 140 AMP

KL5 : CONVERSION, NATURAL GAS

KL7 : CONVERSION, PROPANE GAS (LP GAS)

KM9 : MANIFOLD, INLET, ALUMINUM

KNB : AIR CLEANER, DRY

KNP : COOLING SYSTEM TRANS, HD

KP2 : TIMER, RETAINED ACCESSORY POWER

KUP : THROTTLE CONTROL ELECTRONIC

KW2 : GENERATOR, 94 AMP

L01 : ENGINE, GAS, 4 CYL 1.6L MFI, OHC

L01 : ENGINE, GAS, 6 CYL, 3.4L, MFI, OHC, V6, HO

L02 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC

L02 : ENGINE, GAS, 4 CYL, 2.0L, MFI

L03 : 5.0 LITER V-8 TBI ENGINE

L03 : ENGINE, GAS, 8 CYL 5.0L TBI

L04 : ENGINE, DIESEL, 4 CYL, 3.0L

L05 : ENGINE, GAS, 4 CYL, 2.0L, 1 TBI

L05 : ENGINE, GAS, B CYL, 5.7L, 1 TBI, V8

L06 : ENGINE, GAS, 8 CYL, 4.5L, MFI, HO

L08 : ENGINE EMISSION CHI

L09 : ENGINE, GAS, 6 CYL, 2.5L, FUEL INJECTION

L11 : ENGINE, GAS, 4 CYL, 1.9L, PREMIUM FUEL

L14 : 307 CID V8

L17 : ENGINE, GAS, 4 CYL, 1.6L, 2BBL

L18 : ENGINE, GAS, 8 CYL, 8.1L, MFI

L19 : ENGINE, GAS, 8 CYL, 7.4L, 1TBI, VB

L22 : ENGINE, GAS, 6 CYL, 4.1L, 1BBL

L25 : ENGINE, GAS, 6 CYL, 4.BL, 1BBL

L26 : ENGINE, GAS, 8 CYL, 4.9L, MFI, V8

L27 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6, HO (3800 SERIES)

L30 : 327 CID V8 275HP

L31 : 409 CID V8 400HP (SPECIAL HIGH PERFORMANCE-SOLID LIFTER CAM)

L32 : ENGINE, GAS, 6 CYL, 3.4L, MFI, V6

L33 : 409 CID V8 340HP ( LOW PERFORMANCE-HYDRAULIC CAM)

L34 : ENGINE, GAS, 4 CYL, 2.0L, MFI, DOHC

L35 : ENGINE, GAS, 6 CYL, 4.3L, CPI, V6, 90 DEG

L36 : 427 CU. IN. ENGINE – 390HP

L37 : ENGINE, GAS, 8 CYL, 4.6L, V8 OHC

L38 : ENGINE, GAS, 4 CYL, 2.SL, 1 TBI, HO



L40 : ENGINE, GAS, 4 CYL, 2.3L, MFI SOHC

L44 : ENGINE, GAS, 6 CYL, 2.8L, MFI V6, HO

L46 : 350 CID V8

L47 : ENGINE, GAS, 8 CYL, 4.0L, MFI, OHC

L48 : ENGINE, GAS, 4 CYL, 1.4L, MFI, PREMIUM FUEL

L49 : ENGINE, DIESEL, 8 CYL, 6. SL

L54 : ENGINE, GAS, 4 CYL, 1.8L, MFI, REG FUEL

L56 : ENGINE, DIESEL, 8 CYL, 6.5L, TURBO

L57 : ENGINE, DIESEL, 8 CYL, 6.5L HO

L5J : TRIM COMBINATION, CLOTH, MED SLATE GRAY (J) (91)

L5Q : MOLDING COLOR, MED GRAY MET (91)

L61 : 230 CID 6 CYLINDER

L62 : 250 6 CYLINDER (HIGH PERFORMANCE)

L63 : 250 6 CYLINGER (SPECIAL HIGH PERFORMANCE)

L64 : ENGINE, FLEXIBLE FUEL, (GAS/ALC), 6 CYL, 3.1L, MFI

L65 : ENGINE, DIESEL, 8 CYL, 6.5L. TURB0, HO

L66 : 396 CID V8 265HP (2 BARREL)

L67 : ENGINE, GAS, 6 CYL, 3.8L, YFI, V6, SUPERCHARGED

L68 : ENGINE, GAS, 4 CYL, 2.5L, 1 TBI, SHORTER LENGTH

L69 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL, HO

L71 : 427 CU. IN. ENGINE – 435HP

L72 : ENGINE, GAS, 4 CYL, 1.3L, TBI

L73 : ENGINE, GAS, 4 CYL, I 6L, T8I, REGULAR FUEL

L74 : 327 CU. IN. ENGINE – 300HP

L74 : 327 CU. IN. ENGINE – 360HP (FUEL INJECTION)

L75 : 327 CU. IN. ENGINE – 300HP

L76 : 327 CU. IN. ENGINE – 340HP

L77 : 283 CID V8 220HP (4 BARREL CARB)

L78 : ENGINE, ALCOHOL, 4 CYL, 2.0L, MFI, OHC

L79 : 327 CU. IN. ENGINE – 350HP

L80 : ENGINE, GAS, 6 CYL, 2.5L, MFI, HO

L82 : ENGINE, GAS, 6 CYL, 3.lL, MFI, V6, HO

L84 : 327 CU. IN. ENGINE – 360HP

L85 : 250 CID L6 (4 BARREL CARB)

L87 : 250 CID 6 CYLINDER (TURBO CHARGED)

L88 : 427 CU. IN. ENGINE – 430HP

L89 : ALUMINUM CYLINDER HEADS FOR L71

L90 : 250 CID 6 CYLINDER (LOW COMPRESSION)

L91 : ENGINE, GAS, 4 CYL, I.6 L, UFI, WHC

L92 : ENGINE, DIESEL, 4 CYL, 1.9 L, TURBO

L93 : ENGINE, DIESEL, 6 CYL, 2.5L, TURBO

L96 : ENGINE, GAS, 8 CYL, 5.7L, MFI

L98 : 5.7-LITER V8 TPI ENGINE

L99 : ENGINE, GAS, 8 CYL, 4.3L, MFI

LA2 : ENGINE, GAS, 8 CYL, 4.5L, MFI

LA5 : ENGINE, GAS, 4 CYL, 1.8L, MFI, OHC, TURBO

LA7 : ENGINE, DIESEL, 4 CYL, 1.5L, ISUZU

LAP : WHEEL COLOR, CHARCOAL MET (91)

LAS : ENGINE, GAS, 6 CYL, 3.0L, TURB0

LAW : TRIM COMBINATION, VINYL, DK CHARCOAL, (W)

LB1 : ENGINE, GAS, 6 CYL, 4.3L, 4BBL, V6, 90 DEG

LB4 : ENGINE, GAS, 6 CYL, 4.3L, TBI, V6, 90 DEG

LB6 : ENGINE, GAS, 6 CYL, 2.8L, UFI, V6, TRANSVERSE

LB7 : ENGINE, DIESEL, 8 CYL, 6.6, DI, V8, TURBO, HO, DURAMAX

LB8 : ENGINE, GAS, 6 CYL, 2.8L, MFI, V6, LONGITUDINAL

LB9 : ENGINE, GAS, 8 CYL, 5.0L, TPI, HO

LC0 : ENGINE, GAS, 4 CYL, 1.8L, UFI, TURBO

LC1 : ENGINE, GAS, 6 CYL, 2.8L, 2B8L, V6, LONGITUDINAL

LC2 : ENGINE, GAS, 6 CYL, 3.8L, 4FI, V6, TURBO, HO

LC3 : ENGINE, GAS, 6 YL, 3.8L, 2B8L, V6, 90 DEG

LC5 : ENGINE, GAS, 4 CYL, 1.5L, 2B8L

LC6 : ENGINE, GAS, 6 CYL, 2 0L, MFI, OHC

LC7 : ENGINE, GAS, 8 CYL, 4 IL, MFI

LC9 : ENGINE, GAS, 4 CYL, 1.6L, 2BBL, TOYOTA

LD2 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC

LD4 : ENGINE, GAS, 6 CYL, 4.1L, 4FI

LD5 : ENGINE, GAS, 6 CYL, 3.8L, 2B8L, V6

LD8 : ENGINE, GAS, 8 CYL, 4.6L, MFI, V8, OHC

LE2 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, V6, TRANSVERSE

LE3 : ENGINE, GAS, 6 CYL, 4.1L, 2BBL, VARAJET STANDARD

LE4 : ENGINE, GAS, 4 CYL, 2.0L, MFI, OHC

LE8 : ENGINE, GAS, 8 CYL, 7.4L, 4BBL, HO

LE9 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL, HI COMP

LF3 : ENGINE, GAS, 8 CYL, 5.0L, TRUCK

LF5 : ENGINE, GAS, 8 CYL, 5.7L, 2BBL, HO

LF6 : 400 CID V8 225HP (2 BARREL)

LF7 : ENGINE, DIESEL, 4 CYL, 3.6L

LF8 : ENGINE, GAS, 6 CYL 3.0L, MFI, V6, REGULAR FUEL

LF9 : ENGINE, DIESEL, 8 CYL, 5.7L

LG0 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC, HO

LG2 : ENGINE, GAS, 6 CYL, 3.8L, SFI, V6

LG3 : ENGINE, GAS, 6 CYL, 3.8L, MFI V6, HO

LG4 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL

LG6 : ENGINE, GAS, 6 CYL, 3.1L, TBI, V6,

LG7 : ENGINE, GAS, 6 CYL, 3.3L, MFI, V6

LG9 : ENGINE, GAS, 6 CYL, 2.8L, MFI, V6, TURBO

LGB : ENGINE, GAS, 8 CYL, 5.OL, 4BBL, HO

LGS : ENGINE, GAS, 6 CYL, 3.1L, 4FI, V6, TURBO

LH0 : ENGINE, GAS, 6 CYL, 3.1L, MFI, V6

LH6 : ENGINE, DIESEL, 8 CYL, 6.2L

LH7 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, 60 DEG, TRANSVERSE

LH8 : ENGINE, GAS, 4 CYL, 1.8L, 1 TBI, OHC

LIP : WHEEL COLOR, SILVER (91)

LJ5 : ENGINE, DIESEL, 4 CYL, 1.8L

LK9 : ENGINE, GAS, 6 CYL, 3.0L, 2BEL, V6

LL2 : ENGINE, GAS, 6 CYL, 2.8L, 1 TBI, V6, 60 DEG, HO

LL4 : ENGINE, DIESEL, 8 CYL, 6.2L, HEAVY DUTY

LL8 : ENGINE, GAS, 4 CYL, 2.0L, 1 TBI, HO

LM1 : ENGINE, GAS, 8 CYL, 5.7L, 4BBL

LM3 : ENGINE, GAS, 4 CYL, 2.2L, 1 TBI

LM7 : ENGINE, GAS, 8 CYL, 5.3L, MFI, IRON, GM

LM9 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6, TURBO

LN2 : ENGINE, GAS, 4 CYL, 2.2L, MFI

LN3 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6 (3800 SERIES)

LN7 : ENGINE, GAS, 6 CYL, 3.0L, MFI, V6, HO

LN8 : ENGINE, GAS, 4 CYL, 2.5L, 1 TBI LONGITUDINAL

LP2 : ENGINE, GAS, 3 CYL, 1.0L, TBI, OHC, SUZUKI

LPS : ENGINE, GAS, 8 CYL, 5.7L, 2BBL, HO

LQ1 : ENGINE, GAS, 6 CYL, 3.4L, MFI, OHC, V6, HO

LQ2 : ENGINE, GAS, 4 CYL, 2.0L, MFI

LQ4 : ENGINE, GAS, 8 CYL, 6.0L, MFI, IRON, GM

LQ6 : ENGINE, GAS, 8 CYL, 4.5L, MFI, HO

LQ7 : ENGINE, DIESEL, 4 CYL, 2.2L, ISUZU

LQ9 : ENGINE, GAS, 8 CYL, 6.0L, MFI, IRON, GM, HO

LR1 : ENGINE, GAS, 4 CYL, 1.95L, 2BBL

LR2 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, V6, 60 DEG, TRUCK

LR4 : ENGINE, GAS, 8 CYL, 4.8L, MFI, IRON, GM

LR6 : ENGINE, GAS, 8 CYL, 4.5L, 2TBI

LR8 : ENGINE, GAS, 4 CYL, 2 .8L, 1 TBI,

LR9 : ENGINE, GAS, 4 CYL, 2.0L, 2BBL

LS1 : 5.7L GEN III V8 ENGINE

LS3 : ENGINE, GAS, 3 CYL, 1.0L, MFI, OHC, TURBO, SUZUKI

LS4 : 454 CID V8 235HP (4 BARREL)

LS5 : ENGINE, GAS, 4 CYL, 1.6L. I TBI, OHC, ALUMINUM

LS6 : 454 CID V8 450HP (SPECIAL HIGH PERFORMANCE & 4 BARREL)

LS7 : 454 CID V8 (HEAVY DUTY & 4 BARREL)

LS9 : ENGINE, GAS, 8 CYL, 5.7L, 4BBL

LSA : ENGINE, DRESS KIT, 4.3L, UPS RETROFIT

LST : ENGINE, DIESEL, 4 CYL, 3.9L, CUMMINS MBT

LT1 : ENGINE, GAS, 8 CYL, 5.7L, TPI, HO

LT2 : ENGINE, GAS, 4 CYL, 2.0L, TBI, OHC

LT3 : ENGINE, GAS, 4 CYL, 2.0L, MFI, OHC, TURBO

LT4 : 5.7L GEN III V8 ENGINE

LT5 : ENGINE, GAS, 8 CYL, 5.7L, MFI, OHC

LT6 : ENGINE, DIESEL, 6 CYL, 4.3L, V6, LONGITUDINAL

LT7 : ENGINE, DIESEL, 6 CYL, 4.3L V6, TRANSVERSE

LT8 : ENGINE, GAS, 8 CYL, 4.1L, 2T8I

LT9 : ENGINE, GAS, 8 CYL, 5.7L, 4BBL, HD

LU2 : ENGINE, GAS, 6 CYL, 4.3L, TBI V6, 90 DEG, HO

LU3 : ENGINE, GAS, 6 CYL, 4.3L, MFI, V6, 90 DEG

LV2 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL

LV4 : ENGINE, GAS, 4 CYL, 1.6L, OHC, TURBO, PREMIUM FUEL

LV6 : ENGINE, GAS, 4 CYL, 1.8L, MFI

LW0 : ENGINE, GAS, 4 CYL, 1.6L, MFI, OHC, HO

LW2 : ENGINE, GAS, 8 CYL, 4.5L, MFI

LW5 : ENGINE, GAS, 6 CYL, 3.0L, TURBO

LX8 : ENGINE, DIESEL, 4 CYL, 2.OL TURBO

LY5 : ENGINE, GAS, 4 CYL 1.6L 2BBL REGULAR FUEL

LY9 : ENGINE, GAS, 3 CYL 1.0L 2BBL OHC, SUZUKI

M08 : TRANSMISSION, MAN 4 SPD, BORG WARNER, 77MM, 3.50

M10 : TRANSMISSION, AUTO 4 SPD, ISUZU, ELECTRONIC CONV

M11 : FLOOR SHIFT TRANSMISSION

M13 : TRANSMISSION, AUTO 4 SPD, HMD 4T60-E, ELECTRONIC

M15 : TRANSMISSION, AUTO 4 SPD, HMD, 4T65 – E, ENHANCED

M17 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.31 1ST

M20 : TRANSMISSION, MAN 4 SPD, 117MM, 6.55 1ST

M21 : TRANSMISSION, MAN 4 SPD, 82MM, 2.43 1ST

M22 : 4 SPEED H.D. TRANSMISSION (MUNCIE)

M26 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.50 1ST

M27 : TRANSMISSION, MAN 5 SPD, GETRAG, 84MM, 2.46 1ST

M28 : TRANSMISSION, MAN, 6 SPD, BORG WARNER

M29 : TRANSMISSION, MAN 6 SPD, BORG WARNER 85MM, 2.97

M30 : TRANSMISSION, AUTO 4 SPD, HMD, 4L60E, ELECTRONIC

M31 : TRANSMISSION, 4 SPD, AUTO THM 250 CONV CLUTCH

M32 : TRANSMISSION, MAN 5 SPD, ISUZU, 76MM, 3.72 1ST, .70

M33 : TRANSMISSION, AUTO 3 SPD, TORQUE CONV

M34 : TRANSMISSION, AUTO 3 SPD, THM 125

M35 : POWERGLIDE AUTOMATIC TRANSMISSION

M38 : TURBO 350 AUTOMATIC TRANSMISSION

M39 : TRANSMISSION, MAN 5 SPD B0RG WARNER, 77MM, 2.95

M40 : TRANSMISSION, AUTO 3 SPD, TORQUE CONV VAR 1

M49 : TRANSMISSION, MAN 5 SPD, BORG WARNER 77MM, 3.75

M50 : TRANSMISSION, MAN 5 SPD, NVG

M51 : TRANSMISSION, MAN 6 SPD, ISUZU

M55 : TRANSMISSION COOLER

M62 : TRANSMISSION, MAN 3 SPD, 76MM, 2.85 RATIO

M63 : TRANSMISSION, AUTO 4 SPD, ZF, NON ELECTRONIC

M64 : TRANSMISSION, MAN 3 SPD, 76MM, 3.5O RATIO

M73 : TRANSMISSION, MAN 4 SPD, ISUZU, 77.5MM, 4.09 RATIO

M75 : TRANSMISSION, MAN 5 SPD, 77MM, 3.40 1ST

M77 : TRANSMISSION, MAN 4 SPD, BORG WARNER, 77MM, 4.07

M79 : TRANSMISSION, MAN 5 SPD, ISUZU, 72MM, 3.41 1ST

MAE : MARKETING AREA, EUROPE

MAG : MARKETING AREA, GULF STATES

MAI : MARKETING AREA, ISRAEL

MAJ : MARKETING AREA, JAPAN

MAK : MARKETING AREA, ENGLAND (UNITED KINGDOM)

MAQ : MARKETING AREA, IRAQ

MAS : MARKETING AREA, SAUDI ARABIA

MAU : MARKETING AREA, UNREGULATED

MB1 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 76MM, 4.03

MB4 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.76

MB6 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 76MM, 4.03

MC0 : TRANSMISSION, MAN 4 SPD, GETRAG, 64MM, 1ST, 4.00

MC1 : TRANSMISSION, AUTO 4 SPD, AISIN

MC4 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.35

MC5 : TRANSMISSION, MAN 5 SPD, B0RG WARNER, 774M, 2.55

MC9 : TRANSMISSION, MAN 4 SPD, B0RG WARNER, 77MM, 4.03

MD2 : TRANSMISSION, AUTO 3 SPD, STRASBOURG, THM 180C

MD3 : TRANSMISSION, AUTO 3 SPD, STRASBOURG, THM 180, OPEN

MD5 : TRANSMISSION, MAN 5 SPD, GETRAG, 76MM, 3.92 1ST

MD8 : TRANSMISSION, AUTO 4 SPD, THM 700 R4

MD9 : TRANSMISSION, AUTO 3 SPD, THU 125 CLUTCH

ME2 : TRANSMISSION, MAN 5 SPD, NEW PROCESS 5500, 6.29

ME9 : TRANSMISSION, AUTO 4 SPD, THM 440 T4

MF2 : TRANSMISSION, MAN 4 SPD, B0RG WARNER, 774M, 3.76

MF4 : TRANSFER CASE, NP205, 1.96 LO RANGE

MG1 : TRANSMISSION, MAN 5 SPD, MUNCIE, 76MM 3.50 1ST

MG2 : TRANSMISSION, MAN 5 SPD, GETRAG, 76MM 3.50 1ST

MG3 : TRANSMISSION, MAN 5 SPD, MUNCIE, 76MM, 3.92 1ST

MG4 : TRANSMISSION, MAN 5 SPD, ISUZU, 72MM, 3.41 1ST

MG5 : TRANSMISSION, MAN 5 SPD, GETRAG, 84MM, 4.00 1ST, O/D

MH1 : TRANSMISSION, AUTO 4 SPD, THM F-4, ELECTRONIC CONV

MH2 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.50

MH3 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.50

MH5 : TRANSMISSION, MAN 4 SPD, DOUG NASH CO, 83MM, 2.88

MK2 : TRANSMISSION, MAN 4 SPD, DOUG NASH CO, 83MM, 2.88

MK4 : TRANSMISSION, MAN 5 SPD, B0RG WARNER, 77MM, 3.76

MK5 : TRANSMISSION, MAN 5 SPD, B0RG WARNER, 77MM, 3.50

MK6 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 2.95 1ST , O/D

MK7 : TRANSMISSION, MAN 5 SPD, ISUZU, 3.91 IST, 1.45 3RD,

ML2 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 4.03

ML3 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.76

ML6 : TRANSMISSION, MAN 6 SPD, ZF, 105MM, 5.79 1ST, .72 6TH, O/D

ML8 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM , 3 SO

ML9 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.53 1ST

ML9 : TRANSMISSION, MAN 6 SPD, ZF, 90UM, 2.66 1ST, O/D

MM3 : MERCHANDISED TRANS, MAN 3 SPD PROVISIONS

MM4 : MERCHANDISED TRANS, MAN 4 SPD PROVISIONS

MM5 : MERCHANDISED TRANS, MAN 5 SPD PROVISIONS

MM6 : TRANSMISSION, MAN 6 SPD, BORG WARNER

MN6 : MERCHANDISED TRANS, MAN 6 SPD PROVISIONS

MO1 : H.D. CLUTCH

MPW : TRANSMISSION, MAN 4 SPD, BORG KARNER, 109MM, 4.02

MR2 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.50 1ST

MR3 : TRANSMISSION, MAN 5 SPD, ISUZU, 76MM, 3.73 1ST

MR6 : TRANSMISSION, MAN 5 SPD, ISUZU

MR8 : TRANSMISSION, MAN 5 SPD, ISUZU, 76MM, 3.73 1ST

MS7 : TRANSMISSION, AUTO 4 SPD, TOYOTA, ELECTRONIC CONV

MT1 : TRANSMISSION, 4 SPD, AUTO W/ELECT CONTROLS H.D. (HYDRA-MATIC

4L80-E)

MT2 : TRANSMISSION, MAN 5 SPD, ISUZU 76MM, 3.72 1ST, .74

MT8 : TRANSMISSION, MAN 5 SPD, NEW PROCESS, 109MM, 6.34

MU1 : TRANSMISSION, MAN 5 SPD, HMD, 76MM, 3 77 1ST, 1.03

MV2 : TRANSMISSION, MAN 5 SPD, 3.42 1ST

MV4 : TRANSMISSION, AUTO THM 350, CONV CLUTCH

MV5 : TRANSMISSION, MAN 5 SPD, HMD, 76MM, 3. SO 1ST, 1.03

MV9 : TRANSMISSION, AUTO 3 SPD, THM 200, CONV CLUTCH

MW1 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 4.03

MW3 : TRANSMISSION, MAN 5 SPD, NVG, 1109MM, 5.61 1ST, O/D

MW4 : TRANSMISSION, MAN 5 SPD, GETRAG, 84MM, 1ST 3.54

MW9 : TRANSMISSION, AUTO 4 SPD, THM 200, CONV CLUTCH

MX0 : MERCHANDISED, TRANS, AUTO PROVISIONS, O/D

MX1 : MERCHANDISED, TRANS, AUTO PROVISIONS

MX2 : TRANSMISSION, AUTO 3 SPD, THM 350, CONV CLUTCH 3

MX6 : TRANSMISSION, MAN 4 SPD, MUNCIE, 76MM, 3.31 1ST

MY1 : TRANSMISSION, MAN 4 SPD, BRASIL, 70MM, 3.75 1ST

MY2 : TRANSUISSION, MAN S SPD, HMD, 85MM, 4.D2 1T, O/D

MY5 : TRANSMISSION, MAN 5 SPD, HMD, 3.50 1ST, 1.03

MY6 : TRANSMISSION, MAN 4 SPD, NEW PROCESS, 89MM, 3.09

MY7 : TRANSMISSION, MAN S SPD, ISUZU, 3.92 1ST, 1.33 3RD

MY8 : TRANSMISSION, MAN 4 SPD, MUNCIE, 75MM, 3.53 1ST

MZU : TRANSMISSION, MAN 4 SPD, NEW PROCESS, 435

 

This list is as complete as possible at this time. Some options may be missing/mislabeled.