RPO Code Lookup
RPO stands for Regular Production Option. RPO codes are usually three digits long, represented in the letters A through Z and the numbers 0 through 9. Each vehicle has a group of codes assigned to it, unique to the options found on that vehicle.
Locating the RPO’s for your vehicle is usually as simple as opening your glove box, or looking in the door jam. Other locations to look for them include the spare tire cover, passenger side pillar, or trunk lid. RPO codes are useful to find out exactly what options or accessories are equipped on your vehicle.
To begin your search, please enter part or all of the RPO code your looking to identify, then press Search. For example, Z71 will get the following results:
Searched For: Z71
Z71 Suspension Package, Off-Road
Z71 Suspension Package, High Stance Off-Road
Z71 Suspension Package, Specially-Tuned
Z71 Chassis Package Off-Road
Z71 Off Road Suspension
Z71 Chassis Package “Off Road”
Z71 Suspension Package, specially tuned
Z71 CHASSIS PACKAGE “OFF ROAD”
Josh
05. Aug, 2009
If you cannot find information for a RPO code using this tool, please leave a comment with the code and the model from which it came from so we can add it to the database. Thanks!
Jeff
08. Aug, 2009
601 or 6o1
Jeff
08. Aug, 2009
Sorry, 1991 Chevy 2500 4wd, diesel VIN of 1GTGK24JOLE526…
RPO code lookup - Chevy and GMC Duramax Diesel Forum
15. Aug, 2009
[...] engines folks have. I searched the forum, but didn’t find a list. So, Google came up with this: GM-Trucks.com| RPO Code Lookup Maybe a ’sticky’ topic? (If I have duplicated any efforts here, please ignore.) [...]
DENNIS
16. Aug, 2009
2001 chevy 2500 hd 6,0 liter auto the problem is the transfer case is gone . have no numbers to i.d what transfer belongs in it. heres the vin.1GCHK29U61E228202 with manual shift
ROLAND
22. Aug, 2009
Great site and was lots of help. There were a few RPO’s I could not find.
DRC, K5L, NU5, UPF
Thanks
James
22. Aug, 2009
AXN is the rpo code for the hybrid 14 bolt 9.5″ rear diff. on the 2005 up 6.0L enging 2w drive silverados.
here is a link ot silverado ss site that shows a truck that has the rpo listed in the add.
http://www.silveradoss.com/forums/index.php?showtopic=46147
Larry Kiger
23. Aug, 2009
92 full size chevy blazer- code for keyless entry ? Thank You
Josh
24. Aug, 2009
The following codes have been added per your request!
601 INTERIOR TRIM MED COGNAC (91)
DRC inside rearview mirror with rear video display
K5L Heavy-Duty Trailering Package
NU5 Emission System - California, Bin 4
UPF Bluetooth for phone, personal cell phone connectivity to vehicle audio system
AXN IDENTIFY HYBRID AXLE A28
Good work guys, if you find anything else that’s missing let me know and I WILL find it
@Larry: Maybe code AU0?
boblabadie
28. Aug, 2009
i need to know what the code of the rear entertainment for a 06 tahoe is
LARRY
29. Aug, 2009
JOSH, could it be code AU3 ? Thanks Larry
JIM BAKER
31. Aug, 2009
The following codes were not listed for my 1985 Chev El Camino.YH6,278, 271, 279.
All other codes have been found.
Chris Jones
12. Sep, 2009
Great Site!! I have (6) RPO codes that I can not find.
ROO
R91
SSB
331
333
4SA
TIA
Paul
12. Sep, 2009
I could not find codes ROO, SAB, UG3, US8, U2K and 1LT for 2009 Silverado 1500
Kathy
13. Sep, 2009
Just purchased 2006 Chevy Silverado 1500 and these codes are missing, JP3, JJG, SSB,TSM, 3LT, 691. Thanks so much for the info though very helpful. Kathy
Jim
18. Sep, 2009
A great site. The only code I couldn’t find for my 1998 GMC pickup was U382E as listed on the build tag in glove box. Thanks for the help.
Brandon
24. Sep, 2009
2003 silverado
more info on these codes?
r9u
r9z
slm
vxs
v73
1sc
1sz
6gl
7gl
Marc
24. Sep, 2009
Could not find the code 521 for a 2001 GMC Yukon.
Sean
30. Sep, 2009
What about casting codes?
I have a 14 bolt FF with casting # 3977323 and CFU 74. Any idea what this means
Walt
03. Oct, 2009
2000 Cadillac Escalade -
code 521 ?
Jonathan
04. Oct, 2009
2007 HHR 2LT codes I could not find with the tool:
(These are above the other codes on the sticker inside the glove box. By the way, the took is great!)
1AS46 or IAS46
KHDD3K
Jonathan
04. Oct, 2009
Sorry, one more to add. This was below a column of codes in my 2007 HHR 2LT:
403P
Curtis Peterman
11. Oct, 2009
I have a 1988 GMC K-1500 and there is a rpo code of YHN that will not show on this site. I believe it has to do with gear ratio. Thanks
DOOFY-1
12. Oct, 2009
Finds the codes that others can’t!
Meghan Hardin
17. Oct, 2009
There were a couple extra codes listed on the lable I was wondering if you could tell me what they mean.
111.5 ; CK10516 ; BC/CC ; U334D
Boomer73
19. Oct, 2009
Marc, I think you are looking for 52I (eye), not 521. 521 is not on the master RPO list. 52i is either Light Neutral or Medium Neutral depending on your year/make/model. Bottom line is the color is called Neutral.
Mark
24. Oct, 2009
‘06 Chevy Express G3500. Couldn’t find crp, c99, 1lt, 931.
RPO sticker is here: http://www.maracing.com/van/IMG_0471.JPG
Mike Workman
25. Oct, 2009
This site is fantastc. I have found all but 2 codes.
code UCB and 7RV are not listed. Any help with the codes would be appreciated
robert murphy
29. Oct, 2009
came up nothing on mine
2004 2500hd 4×4 crew cab,long bed, 8.1L
#1GCHK23G34F139169
94 K2500 350 "heavy duty"? - Page 4 - Truck Forum
29. Oct, 2009
[...] GM-Trucks.com| RPO Code Lookup So I worked a little on the hyperlink above on a few of the codes in my glovebox sticker. For example, G80 (which is on my list in the glovebox) could be (copied verbatim from website): G80 Differential, heavy-duty locking rear G80 Differential, automatic locking rear G80 Differential, heavy-duty automatic locking rear G80 Differential, limited slip rear G80 Differential, limited slip G80 Differential, locking, heavy-duty, rear G80 Differential, Zexel-torsen, limited-slip, rear G80 Differential, automatic G80 Rear Axle: Positraction G80 Locking, Rear Axle G80 Axle Positraction Limited Slip G80 Differential, locking, rear G80 AXLE POSITRACTION LIMITED SLIP As I inferred before, I am a ******* newbie to RPO codes (but I am getting a lot smarter really fast with every post from this forum). The list above does not help much in the HD/non-HD differentiation. Unless, do all of the above descriptions mean the same hardware? Seems impossible - limited slip is in no way the same as locking, for example. Therefore, what information do the RPO codes really impart? Family? [...]
CA-NORTH
30. Oct, 2009
RPO = R74 …. on 94 K1500 MOT FOUND.
FRANK SMITH
31. Oct, 2009
‘07 CMC SIERRA 2500 HD “CLASSIC CCSB 4X4 DMAX
RPO’S N
ALSO NOT LISTED TO YOUR SITE;
66W, 921, 922
EXTREMELY HELPFUL SITE, THANK YOU!!!
Sean
03. Nov, 2009
Looking for information to decipher these GM 14 Bolt FF casting numbers:
Carrier Housing - 3977323
Pinion Ring - 397735