Comments for GM-Trucks.com

Comment on RPO Code Lookup by Walt

Walt — Mon, 16 Nov 2009 21:06:11 +0000

2009 Silverado 3500

Need information for RPO Code JK3

Comment on RPO Code Lookup by Dale

Dale — Sun, 15 Nov 2009 02:29:13 +0000

Great site, thanks!

Missing HD2

2006 C4500

Comment on RPO Code Lookup by Kevin

Kevin — Fri, 13 Nov 2009 20:43:57 +0000

1993 K1500

YHE, ZHE, 15Z, R85

Comment on Trouble Code Lookup by Peter D

Peter D — Fri, 13 Nov 2009 01:21:39 +0000

410 means the computer is not seeing the 02 sensors go lean when the air injection pump is activated. The pump may not be coming on when commanded or the hoses or check valves in the system may be inoperative or not connected at all. Very common problems are after a heavy rain storm that gets into the air intake for the pump and shorts and blows a fuse for the system.

Comment on Change the fuel pump and sending unit by Archie

Archie — Thu, 12 Nov 2009 16:57:26 +0000

Thanks for posting this, I have an 2500 Suburban that needs a sending unit and transfer case. I will slso replace the fuel pump too, the truck has 158K on it. Thanks again!

Comment on Lubing your intermediate steering shaft for 1999 to 2004 trucks by Bob

Bob — Wed, 04 Nov 2009 01:49:25 +0000

I am dealing with this problem on my truck right now, and am looking for a more permenant fix to this problem.I work at a dealership and I’ve been looking around for what I think would solve this problem and here is what I’m thinking. why couldnt a person use a tacky tar substance like the stuff that holds the dust sheild plastic on in the inside of the door panel? this would allow the sector shaft to move, would never deteriorate, doesnt harden and wouldnt seep back to the bottom after a few months… any opinions you have are welcome.

Comment on RPO Code Lookup by Sean

Sean — Tue, 03 Nov 2009 21:49:42 +0000

Looking for information to decipher these GM 14 Bolt FF casting numbers:

Carrier Housing - 3977323

Pinion Ring - 397735

Comment on RPO Code Lookup by FRANK SMITH

FRANK SMITH — Sat, 31 Oct 2009 17:38:34 +0000

‘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!!!

Comment on RPO Code Lookup by CA-NORTH

CA-NORTH — Fri, 30 Oct 2009 08:51:45 +0000

RPO = R74 …. on 94 K1500 MOT FOUND.

Comment on RPO Code Lookup by 94 K2500 350 "heavy duty"? - Page 4 - Truck Forum

94 K2500 350 "heavy duty"? - Page 4 - Truck Forum — Fri, 30 Oct 2009 01:07:11 +0000

[...] 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? [...]

Comment on RPO Code Lookup by robert murphy

robert murphy — Thu, 29 Oct 2009 22:34:36 +0000

came up nothing on mine
2004 2500hd 4×4 crew cab,long bed, 8.1L
#1GCHK23G34F139169

Comment on Products by scott bintz

scott bintz — Wed, 28 Oct 2009 20:51:15 +0000

Cool stuff. How could i get a free shirt?

Comment on RPO Code Lookup by Mike Workman

Mike Workman — Sun, 25 Oct 2009 17:17:06 +0000

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

Comment on RPO Code Lookup by Mark

Mark — Sun, 25 Oct 2009 02:37:46 +0000

‘06 Chevy Express G3500. Couldn’t find crp, c99, 1lt, 931.

RPO sticker is here: http://www.maracing.com/van/IMG_0471.JPG

Comment on Trouble Code Lookup by Richard E Dumbaugh Jr

Richard E Dumbaugh Jr — Sat, 24 Oct 2009 20:23:44 +0000

PO410 is Secondary air Injection system malfunction
Advanced Auto Parts couldn’t tell me what to replace
to fix the problem. Can you tell me what that refers to.
Thanks!!!!!

Comment on Locating and replacing all 11 grease zerks by Lube point question - Cadillac Owners Group

Lube point question - Cadillac Owners Group — Sat, 24 Oct 2009 05:38:44 +0000

[...] Re: Lube point question http://www.gm-trucks.com/resources/h…-grease-zerks/ [...]

Comment on RPO Code Lookup by Boomer73

Boomer73 — Mon, 19 Oct 2009 12:52:00 +0000

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.

Comment on RPO Code Lookup by Meghan Hardin

Meghan Hardin — Sat, 17 Oct 2009 22:46:39 +0000

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

Comment on RPO Code Lookup by DOOFY-1

DOOFY-1 — Mon, 12 Oct 2009 20:22:50 +0000

Finds the codes that others can’t!

Comment on RPO Code Lookup by Curtis Peterman

Curtis Peterman — Mon, 12 Oct 2009 00:41:28 +0000

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

Comment on Lubing your intermediate steering shaft for 1999 to 2004 trucks by Tots

Tots — Tue, 06 Oct 2009 23:42:54 +0000

This is the perfect job description. Thank you!
My 2002 Yukon was years overdue, so after putting in new shocks I finally decided to tackle it. (10-06-2009)
At 120,000 miles I got stumped by not being able to pull the shaft through because it was rusted a bit under the hood. After disconecting both bolts and being able to slide the shaft a bit, I clamped vice grips to the frozen shaft under the hood and proceeded to tap the shaft upwards towards the fire wall and it came out. THEN pulling it out from under the dash was easy. Chevy makes a kit for cars, the kit above has been discountinued for quite some time. So now I know the process, I’ll replace the piece when the vibration comes back. This site rocks!!!

Comment on Changing your transfer case fluid by milo thornton

milo thornton — Tue, 06 Oct 2009 00:57:26 +0000

you are wrong (but not the only one!) on the description of auto v manual transfer cases.
all gm transfer cases (my research in the context of silverado 2500hd) which have push button select are manual transfer cases.

Comment on RPO Code Lookup by Jonathan

Jonathan — Sun, 04 Oct 2009 23:22:58 +0000

Sorry, one more to add. This was below a column of codes in my 2007 HHR 2LT:

403P

Comment on RPO Code Lookup by Jonathan

Jonathan — Sun, 04 Oct 2009 23:19:13 +0000

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

Comment on RPO Code Lookup by Walt

Walt — Sat, 03 Oct 2009 18:11:12 +0000

2000 Cadillac Escalade -

code 521 ?

Comment on RPO Code Lookup by Sean

Sean — Wed, 30 Sep 2009 19:30:50 +0000

What about casting codes?

I have a 14 bolt FF with casting # 3977323 and CFU 74. Any idea what this means

Comment on Products by SSThunder

SSThunder — Fri, 25 Sep 2009 03:12:15 +0000

Glad to see the page back up. Now I can order another shirt. Thanks!!

Comment on POTD: Monster super-custom GMC 3500 by Clint

Clint — Thu, 24 Sep 2009 19:34:36 +0000

I wanna see that mother! Fo Sho!

Comment on RPO Code Lookup by Marc

Marc — Thu, 24 Sep 2009 13:01:56 +0000

Could not find the code 521 for a 2001 GMC Yukon.

Comment on RPO Code Lookup by Brandon

Brandon — Thu, 24 Sep 2009 05:53:31 +0000

2003 silverado

more info on these codes?

r9u
r9z
slm
vxs
v73
1sc
1sz
6gl
7gl