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Cool, thank you for your help. I appreciate it.

@davesterThe sticker is completely rubbed off. Is that RPO defining the same gvwr that would have been on that sticker?

@davester When I look up the VIN it says 2500 HD, I didn't realize that even a non-HD 2500 would say HD when decoded. I got two build sheets, one from a local dealership and one from the email listed above. While they both say HD, you guys where right. Between the lack of the 2" body raise and a semi float rear end, it not a HD. Not sure why I questioned you guys lmao. Lastly: Does having the towing package increase my GCWR or my GVWR? Does anyone know my GVWR off hand? (as a non-HD 2500) From_Email.pdf From_Dealer.PDF

Sent them a email, hopefully they respond because even if it's not a "full HD" I would imagine the towing would be higher due to the other non-HVY RPO codes, and I would like to know what this truck is capable of. Still confused as to why the Vin would say 2500HD if it's not. We'll see

Interesting. So I'm trying to understand, not argue, but If the vin states the truck is a HD, is it not? Is the HD aspect of the truck determined by one RPO code? Because I have the Z85, Z82, and KNP which to me would imply that it is in fact a HD (in addition to the vin) @Formulabruce Not sure what you meant by "...big straight 'C" channel at the rear". But here is the frame if that helps Also my MT1 code specifies HD. I swear I'm not trying to convince y'all I have the HD lol, I just want to confirm. I appreciate the insight guys

Thanks, I kind of guessed, but just wanted to make sure. According to badging and VIN it is a HD. Would the K-2500 table not be better indicator as to towing limit? It looks like (according to the 8100 row) that the 3.73 gears reduce the capacity by 10%. which would put me at 14,400#? Really just trying to make sure I'm looking at this right lol

Ok so maybe a new newbie questions but I've got a few questions regarding my new to me 2004 2500HD 4x4 6.0/4l80e First, looking through the manual for towing capacity and limits I noticed the models of the trucks are C-1500, C-1500, K-2500.... I though after 1999 everything was a Silverado, why are the models (in my 2004 Silverado's manual) 5 years old? I know the C designated 2wd and K 4wd in the older models, so i'm guessing my truck is being classified as a K-2500 Crew cab short box HD? Second, on that same chart it shows the engine options, and their respective limits. The chart shows the K-2500 Crew cab short box HD 6000 V8, with only the 4.10 axle ratio. According to my RPO codes, I've got 3.73 rear gears. Even in all the research I've done I've only found 4.10 as a option in my truck, does my RPO indicate a special ordered truck or? Third, does having the towing package increase the payload or GCWR at all? Really I just want to know what this truck is rated to tow Below is my decoded RPO codes and a picture from my manual Thanks for any answers you guys can provide David AE7 SEAT FRT SPLIT DRIVER PASS EASY ENTRY AG1 ADJUSTER FRT ST POWER 6 WAY DRIVER SPLIT BENCH AJ1 WINDOW TINTED DEEP ALL EXCEPT W/S AND DRS AM7 SEAT RR FLDG AU0 E R LOCK CONTROL ENTRY REMOTE ENTRY 970124 E E E A AU3 LOCK CONTROL SIDE DR ELEC A31 INDOW POWER OPERATED ALL DOORS 970310 E F E A B30 COVERING FLOOR CARPET B32 COVERING FRT FLOOR MATS AUX B33 COVERING REAR FLOOR MATS AUX B71 MOLDING WHL OPENING COLORED B85 ORNAMENTATION EXTR MLDG BELT REVEAL CJ3 HVAC SYSTEM AIR CONDITIONER FRT MAN TEMP CONT CMD PLANT CODE FLINT MI C49 DEFOGGER RR WINDOW ELECTRIC C6P GVW RATING 8600 LBS/3 900KG DF5 MIRROR I/S R/V LT SENSITIVE COMPASS O/S TEMP DK7 CONSOLE ROOF INTERIOR CUSTOM DL8 MIRROR O/S LH & RH REM CONT ELEC DEFOG EVA TEST DVT EVAP EMISSION REQUIREMENT E63 BODY EQUIPMENT FLEETSIDE PUBX FE9 CERTIFICATION EMISSION FEDERAL FT2 ARM LH TORSION BAR SPRING ADJ (FT2) FT3 ARM RH TORSION BAR SPRING ADJ (FT3) GT4 AXLE REAR 3.73 RATIO (DUP WITH 5 X 1) G80 AXLE POSITRACTION LIMITED SLIP JH6 BRAKE HYD POWER 4-WHEEL DISC 9900 LBS KC4 COOLING SYSTEM HEAVY DUTY ENGINE OIL KNP COOLING SYSTEM TRANS HD KUP THROTTLE CONTROL ELECTRONIC K34 CRUISE CONTROL AUT0MATIC ELECTRONIC K47 AIR CLEANER HIGH CAPACITY K68 GENERATOR105 AMP LQ4 ENGINE GAS 8 CYL 6.0L MFI IRON GM MT1 TRANSMISSION 4 SPD AUTO W/ELECT CONTROLS H.D. (HYDRA-MATIC 4L80-E) NA4 EMISSION SYSTEM GVW ABOVE 8500 LB NP5 STEERING WHEEL LEATHER WRAPPED NP8 TRANSFER CASE – (ACTIVE) – PUSH BUTTON CONTROL 2 SPD NT9 EMS M EMISSION SYSTEM FEDERAL TIER 2 PHASE-OUT 211 E E E A NZZ SALES PACKAGE SKID PLATE "OFF ROAD" SPOT 980623 E T E A PY0 WHL M WHEEL 16 X 6.5 ALUMINUM 890207 E 4 E A QIW TIRE ALL LT245/75R16/E BL R/PE ST TL OOR BL R9Z Unknown SAF LOK R LOCK SPARE TIRE HOIST SHAFT 20219 E T T A SLM STOCK ORDER PROCESSING CODE TR3 GRL R GRILLE RADIATOR BODY COLOR W/CHROME EMBLEM 990303 E 0 E A T96 FOG LAMPS - FRONT UB0 RDO M RADIO AM/FM STEREO SEEK/SCAN. CD AUTO TONE DATA SYSTEM CLOCK ETR 3 0 8 E T E A UK3 CONTROL STEERING WHEEL ACCESSORY 971121 E E E A UQ3 SPEAKER SYSTEM PERFORMANCE ENHANCED AUDIO VB3 BUMPER RR STEP CHROME IMPACT STRIP VG3 BUMPER FRT IMPACT STRIP VR4 TRAILER HITCH WEIGHT DISTRIBUTING PLATFORM VXS VEHICLE COMPLETE V73 ANTENNA FIXED XGK TIRE FRONT LT245/75R16/E BW R/PE ST TL OOR 120Q X88 CONVERSION NAME PLATE CHEVROLET YD3 FRONT AXLE BASE EQUIPMENT FOR SCHEDULING GVW PLATE YD6 REAR SPRING BASE EQUIPMENT YE9 CONVENIENCE PACKAGE COMFORT & DECOR LEVEL #3 YGK TIRE REAR LT245/75R16/E BW R/PE ST TL OOR 120Q ZHH SPT R TIRE SPARE LT245/75R16/E BW R/PE ST TL ALS 120Q 970626 E T E A ZY1 COLOR COMBINATION SOLID Z82 TRAILER PROVISIONS SPECIAL EQUIPMENT H.0. Z85 CHASSIS PACKAGE HIGH PAYLOAD FIRM RIDE 1SB OPTION PACKAGE 02 1SZ DISCOUNT OPTION PACKAGE 890410 P 1 E A 6GL Unknown 62U CCU M PRIMARY COLOR EXTERIOR DK BLUE MET (01) 20419 E 4 E A 69D TRIM COMBINATION CLOTH MED BEIGE (D) 69I CCM M INTERIOR TRIM LT OAK/VERY DK PEWTER 980828 E T E A 7GL Unknown

Thanks guys, I was curious as to what the sticker said. I've got E rated tires on now, and I'm at 60psi all around. I'll keep on eye out for odd wear and adjust accordingly

Hey all, I'm new to this site and a new owner of a 2004 2500HD 6.0/4l80e. I had a few questions, firstly regarding tire pressure. My sticker is gone so I can't just look on the driver's side door. I wanted to know if someone with the same build as mine would be willing to share a pic of theirs. 6.0 lq4 / 4l80e 4x4 Towing package Crew cab Thanks for having me