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Several new guys on the forum might find this interesting it was hidden in an old thread about manual recommendations.


For RPO Codes look in glove box for the letter schemes below to find out what options you have, these are listed in front of the GM Service manual. IMO an essential piece of your toolbox is the GM manual, especially with the 6.5 as the dealers no longer school their techs in 6.5, it's all DMAX now.


The manual is pricey $150 new set avg www.helminc.com can also be found online at ebay and book seller sites for less sometimes, $150 is about 2-3 hrs GM troubleshooting time, you can get your codes scanned for free at Autozone & others if you don't have a scanner $75 I think is GM avg scan charge, won't take many trips not made to GM to recoup investment, plus gives a sanity check if your dealer lacks integrity and is feeding you a line.

Also FYI in addition you can have your VIN checked here http://www.dieselplace.com/forum/forumdisplay.php?f=72 to give you a little more info on your ride in addition to RPO coded info below

AG2 -- 6-WAY Passenger seat
B35 -- Rear carpet floor mat
B39 -- Carpeted floor
B71 -- Wheel well moulding
B85 -- Body side moulding

C5I -- GVW RATING, 8050 LBS
C5M -- GVW RATING, 6100 LBS
C5P -- GVW RATING, 6250 LBS
C5Q -- GVW RATING, 6300 LBS
C5R -- GVW RATING, 5800 LBS
C5S -- GVW RATING, 6600 LBS
C5U -- GVW, 6800 LBS
C5Z -- GVW, 7200 LBS

C6P -- GVW RATING, 8600 LBS/3900 KG
C6U -- GVW RATING, 9000 LBS
C6W -- GVW RATING, 9200 LBS
C7A -- GVW RATING, 10000 LBS

DD0 -- Left & rt heated power mirror
DF5 -- Inside mirror compass/outside temp

FG5 -- Delco/Bilstein gas shocks
F44 -- CHASSIS, HEAVY DUTY
F60 -- SPRING FRONT, HD


GQ1 -- AXLE REAR, STD RATIO
GT4 -- AXLE REAR, 3.73 RATIO
GT5 -- AXLE REAR, 4.10 RATIO
GU4 -- AXLE REAR, 3.08 RATIO
GU5 -- AXLE REAR, 3.23 RATIO
GU6 -- AXLE REAR, 3.42 RATIO
G80 -- AXLE REAR, LIMITED SLIP (POSITRACTION)


HC4 -- AXLE REAR, 4.56 RATIO


JB6 -- BRAKE, POWER, DISC/DRUM 7200 LBS
JB8 -- BRAKE, POWER, DISC/DRUM 10000 LBS
JD5 -- DUAL POWER, DISC/DRUM 6400 LBS
JD7 -- BRAKE, HYD POWER, DISC/DRUM 8400 LBS

KA1 -- Heated leather bucket seats
KNP -- HD TRANSMISSION COOLING
K05 -- HEATER, ENGINE BLOCK
K34 -- CRUISE CONTROL, AUT0MATIC, ELECTRONIC
K47 -- AIR CLEANER, HIGH CAPACITY
K60 -- GENERATOR, 100 AMP
K68 -- GENERATOR, 105 AMP
KW2 -- GENERATOR, 124 AMP
KC4 -- COOLING SYSTEM, ENGINE OIL


L49 -- ENGINE, DIESEL, 8 CYL, 6.5L
L56 -- ENGINE, DIESEL, 8 CYL, 6.5L, TURB0
L57 -- ENGINE, DIESEL, 8 CYL, 6.5L, HO
L65 -- ENGINE, DIESEL, 8 CYL, 6.5L. TURB0, HO
L76 -- ENGINE, DIESEL, 8 CYL, 6.6L, V8, DI, TURB0, ISUZU
LH6 -- ENGINE, DIESEL, 8 CYL, 6.2L


MM4 -- MERCHANDIZED TRANS, MAN 4 SPD PROVISIONS
MT1 -- TRANSMISSION, AUTO 4 SPD, HMD, THM R2 (4L80-E)
MW3 -- TRANSMISSION, MAN 5 SPD, NVG, 109MM,, 5.61 1ST, O/D
MX0 -- TRANSMISSON, AUTO PROVISIONS, O/D
M20 -- TRANSMISSION, MAN 4 SPD, 117MM, 6.55 1ST
M30 -- TRANSMISSION, AUTO 4 SPD, HMD, 4L60-E, ELECTRONIC


NA1 -- EMISSION SYSTEM, GVW < 8500 LBS
NA5 -- EMISSION SYSTEM, FEDERAL, TIER O
NB8 -- EMISSION SYSTEM, CA/NY/MA/CT EMISSIONS OVERRIDE (REQ FE9)
NC7 -- FEDERAL EMMISIONS OVERRIDE (REQ YF5 OR NG1)
NF2 -- EMISSION SYSTEM, FEDERAL TIER 1
NG1 -- EMISSION SYSTEM, NY/MA/CT
NG5 -- REGISTRATION, EMISSION SYSTEM (50 STATE)
NK3 -- STEERING WHEEL, SPORT, SOFT RIM, SIMULATED LEATHER
NP1 -- TRANSFER CASE, ELECTRONIC SHIFT CONT, TWO-SPEED
NP5 -- STEERING WHEEL, LEATHER WRAPPED
NRQ -- EXHAUST, CLOSE COUPLED



PF4 -- WHEEL, 16x7 ALUMINUM
PO6 -- RALLY WHEEL/TRIM RING


RO4 -- WHEEL, SINGLE RR
RO5 -- WHEEL DUAL RR





MSL -- Mexico city code
UG1 -- 3 channel homelink
X88 -- Chevrolet
ZM9 -- Suburban comfort package
11U -- Primary color metallic peweter
13I -- Lt grey interior
132 -- Leather
 

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Of interest, I found discrepencies between my glovebox codes, my original window sticker, and what is actually on the truck:


G80: Limited Slip. My truck has the LOCKING diff option (sticker).


K05: Block Heater. NOT in the glovebox, but I have it.


K47: Air Cleaner, Hi-capacity. Not in my codes, shouldn't it be? or for big 7.4 gasser?


KC4: Oil Cooling. NOT in glovebox, my truck has it.


JD7: Hydro Power Disc/Drum 8400 lbs. That is in my glovebox. Why have 8400 lb rating for an 8600 lb GVW truck?


NO Emissions codes, so my truck has no EGR, but what about a Catalytic converter??


Thanks!
 

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Just a tickler to bounce this back up to front, sorry. Any other comments on my questions?? Thanks!
 

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Mine weights much more than it should. Afaik, GVWR means max. allowed weight, and I´m already very close to the limit with an empty truck.

Anyone with the correct weight ratings?
Edited by: 0lee
 

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Since I have no life outside of trying to get a job I figured I'd start compiling pro codes that I've found....


AAB - MEMORY PACKAGE
AE7 - SPLIT BENCH RECLINING FRT SEAT
AG1 - 6-WAY POWER DRIVER SEAT
AG2 - 6-WAY POWER DRIVER & PASS SEATS
AG9 - 6-WAY POWER SEAT
AJ1 - DEEP TINTED GLASS
AJ3 - DRIVER'S SIDE AIRBAG (SIR)
AK5 - DRIVER & PASSENGER SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM
AM7 - FOLDING REAR SEAT
AN3 - FRONT BUCKETS WITH POWER ADJ.
A07 - BODY GLASS - 6 WINDOWS
A08 - RH SIDE BODY GLASS-2 WINDOW **7 - SWING OUT LH SIDE BODY GLASS **8 - SWING OUT REAR DOOR GLASS **9 - SWING OUT SIDE DR GLASS
APD - BELT PROVISIONS-BENCH SEATS
AR7 - FRONT BUCKET SEAT-STANDARD
AR9 - BUCKET SEATS WITH LEATHER TRIMMED SEATING SURFACES
AS3 - CENTER AND REAR SEATS
AT5 - CENTER SEAT
AU0 - KEYLESS REMOTE DOOR LOCK AND TRUNK OPENER
AU3 - POWER DOOR LOCK SYSTEM
AU6 - REMOTE TAILGATE RELEASE
AXP - MPV VIN IDENT POSITION
A20 - SWING OUT QUARTER WINDOWS
A28 - SLIDING REAR WINDOW
A31 - POWER WINDOWS
A52 - FRONT BENCH SEAT
A95 - 6-WAY POWER BUCKET SEATS


BAG - EXPORT PARTS PACKAGING
BGR - BOWLING GREEN PLANT
BVE - SIDE RUNNINGBOARD STEPS
B3J
B3P - BAILMENT COMMERCIAL ORDERS
B30 - WHEELHOUSING & FLOOR CARPETING
B32 - FRONT COLOR-KEYED FLOOR MATS
B33 - REAR COLOR KEYED FLOOR MATS
B35
B37 - COLOR-KEYED FLOOR MATS FOR FRONT AND CENTER SEAT
B38 - FULL FRT & REAR FLR COVERING
B39 - COLOR KEYED FLOOR MATS/ CARPETED
B58 - COLOR-KEYED FLOOR MATS, CARPETED
B71 - WHEEL OPENING FLARES CMD - ASSEMBLY PLANT - FLINT, MI
B84 - BODY SIDE MOLDINGS
B85 - BRIGHT BODY SIDE MOLDINGS
B96 - WHEEL OPENING MOLDINGS


CJ2 - AIR CONDITIONING-ELECTRONIC DUAL ZONE
CJ3 - AIR COND., DUAL ZONE MANUAL
CMD - ASSEMBLY PLANT-FLINT, MI
C25 - REAR WINDOW WASHER & WIPER
C3F - GVW RATING - 7,700 LBS
C36 - REAR HEATER
C49 - ELECTRIC REAR WINDOW DEFOGGER
C5B - 15,000 LB GVW RATING
C5I - 8,050 LB GVW RATING
C5S - 6,600 LB GVW RATING
C5U - 6,800 LB GVW RATING
C5Z - 7,200 LB GVW RATING
C6P - 8,600 LB GVW RATING
C6W - 9,200 LB GVW RATING
C60 - AIR CONDITIONING WITH AIR FILTRATION SYSTEM
C69 - AIR CONDITIONING-FRONT & REAR
C7A - 10,000 LB GVW RATING
C7I
C7W - GVW RATING - 11,400 LBS


DD0 - ELECTROCHROMIC MIRRORS: ISRV & LH OSRV


DD7 - ELECTROCHROMIC ISRV MIRROR/COMP
DD8 - OSRV
DE2 - EXT FOLDING B-E-L MIRRORS
DF5 - INT R/V MIRROR, LIGHT SENSITIVE W/OUTSIDE TEMP & COMPASS
DH2 - LIGHTED LH & RH VISOR MIRRORS
DK6 - OVERHEAD CONSOLE
DK7 - INTERIOR CUSTOM ROOF CONSOLE
DL5 - ROADSIDE SERVICE INFORMATION DECAL
DL8 - DUAL PWR HEATED OSRV MIRRORS
DPF - OSRV RETRACTABLE CAMPER STYLE POWER MIRRORS W/TURN SIGNAL AND HEAT
DR2 - MIRROR O/S ELECTRIC, HEATED DRIVER SIDE ELECTROCHROMIC WITH DUAL GROUND ILLUMINATION
DT4 - ASHTRAY MUFFIN
D07 - CUSTOM FRONT FLOOR CONSOLE
D44 - EXTERIOR BELOW-EYE-LINE MIRRORS - PAINTED FE9
D48 - ELECTRIC EXTERIOR MIRRORS
D55 - CONSOLE


EF1 - DELETE REAR BUMPER
EXP - EXPORT ORDER
EVA - EVAP EMISSION REQUIREMENT
E2C - ORDER TO DELIVERY - EXPEDITE
E23 - 9,500 LB GVW RATING
E24 - DOOR SIDE CARGO, HINGED
E55 - BODY STYLE TAILGATE
E63 - FLEETSIDE BODY


FE4 - RIDE & HANDLING SUSPENSION SYSTEM
FE9 - FEDERAL/NY/MA/ME/VT EMISSIONS
FF6 - TORSION BAR SPRING ADJUSTMENT
FF7 - TORSION BAR SPRING ADJUSTMENT
FF8
FF9
FK2 - TORSION BAR SPRING ADJUSTMENT
FK3 - TORSION BAR SPRING ADJUSTMENT
FLT - FLEET PROCESSING
FT2 - ARM TORS BAR SPRING ADJ
FT3 - ARM TORS BAR SPRING ADJ
F44 - HEAVY DUTY CHASSIS EQUIPMENT
F60 - HEAVY DUTY FRONT SPRINGS


GK9 - REAR AXLE - 4.63 RATIO
GMC - ASSEMBLY PLANT-GM TRUCK & COACH
GT4 - REAR AXLE - 3.73 RATIO
GT5 - REAR AXLE - 4.10 RATIO
GU6 - REAR AXLE - 3.42 RATIO
G65 - LEVEL CONTROL MAN,SELF AD
 

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Does anyone know the glovebox code for fueltank size?

I filled my tank the other day for the first time.

The guage said 1/2 full and it took about 80 litres and $62.50.

Just moved up from a Mazda so I had a slight case of sticker shock.

I would like to know if my guage is reliable, though.
 

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Here, the shorbed trucks are 26 gallon, longbed 34 gallon.
 

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thanks jac,

On checking my receipt, it was 71 litres which is about 17 1/2 US gallons, which seems to say that my guage is pretty accurate.
 

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Here is a link to a pdf holding just about every RPO you can think of. Not all of them pertain to the 6.5 obviously but they are in alphabetical order so it should be easy to find what you are looking for.

aplsweb.com/Topics/TopicPix/RPO.pdf
link not working...
 
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Discussion Starter #10
Cheater posting a link :D :D :D

I wasn't sure with new forum it would work glad it does a lot of good info there; Thanks for sharing with us
 
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