QR Code Reader

Martin Instructor Burnaby, British Columbia Posted   Latest   Edited  

A member of another site just upgraded to a smart phone from a flip phone and was asking about Apps for his new device. This prompted me to clue him in about a useful App in the form of a QR code reader that can decode VIN #s and Regular Production Option (RPO) codes on GM vehicles from 2018 Model Year (MY) and later. 

Beyond scanning and uploading an example from my phone in response to his request, it got me thinking that this information might not be widely known. I do know for a fact that some GM dealership technicians do not even consider that this information is included on the vehicle certification decal, that is affixed to the base of the driver's door "B" pillar.

The QR reader feature was demonstrated in GM Techlink gm-techlink​.​com/?p=9801 May 21st, 2018 and identified that this information was offered beginning on 2018 MY vehicles. Prior to 2018 MY, the decal did have a QR code, but it only deciphered the VIN #, as shown for my wife's 2015 GMC Terrain.

I find that i-nigma functions well for reading these QR codes. I have other resources that decode the VIN # and RPOs, but there are times when verifying it on the vehicle is handy. This information used to be on the vehicle Service Parts IDentification (SPID) label, most commonly located in the glove box or in the trunk. With a vehicle that might be raised up and supported on a hoist (lift) and stands that do not allow it to be lowered to check RPOs in a glove box, accessing the certification decal is a much handier alternative and safer to access. 

Simply opening the driver's door and scanning the code with a smart phone using an appropriate App, is all that is necessary to decipher the QR code and identify the VIN # and RPO's that the vehicle is equipped with. Aim the red "sight" around the QR code and once centred and in focus, the App automatically captures the code and immediately deciphers and displays the VIN # and RPOs. The information is stored in the App and can be recalled by VIN # in "History". The information can also be readily shared using various options.

Note: The familiar Service Parts IDentification "SPID" label is no longer used.

Again, this may be "old news" to some, but maybe worth sharing for those who are not aware of the information currently embedded in the QR code, on the certification decal of 2018 and later GM vehicles. 

Some may also not be aware of this. For any GM vehicle that has a session log recorded when using GDS 2, there is an RPO tab that is located in the session log when "Review Stored Data" is selected.

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Anthony Technical Support Specialist
Kirkwood, Pennsylvania
Anthony Default
 

Hi Marty: I can't use that. It doesn't have 37 pages of obfuscated legalese nor does it want my first born male child. All kidding aside, this is how a EULA should read. i-nigma​.​com/TermsOfUse​.​htm… Thanks for the impetus. Guido

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Martin Instructor
Burnaby, British Columbia
Martin Default
 

Hi Guido. Yes, it appears to be a nicely featured and functioning app, without being encumbered by all of that "legalese". What I like is that unlike some others that I tried, I-nigma actually works! Martin

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Michael Owner
Pelham, Alabama
Michael Default
 

i-nigma does lots of other cool barcode/QR code-related stuff, too... Not to go off on a tangent, but RepairLink (free online OE parts catalogs and online ordering access for automotive service facilities) has a VIN Attributes function that gives vehicle-specific RPO codes and definitions for GM vehicles. This is the only publicly-accessible method (outside of GM dealer-level VIS2 access) of…

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Martin Instructor
Burnaby, British Columbia
Martin Default
 

Hi Mike. Yes, i-nigma definitely has some nice features and abilities. I agree. RepairLink can be a handy resource. Like you, I have many links saved that serve to fill in information voids. However, you're the Master of keeping them organized! RPO codes can also be found on a tab in GDS 2, plus in Techline Connect the RPO tab is built into the App directly listing the RPO codes once the MDI…

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Michael Owner
Pelham, Alabama
Michael Default
   

I-nigma has disappeared from the Google Play Store for some reason.

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Phil Technician
Tewksbury, Massachusetts
Phil Default
 

It is not terribly clear from the Techlink article, but do the vehicles still have an RPO tag somewhere on the vehicle to look up the codes? I assume that they must since the article does mention that "Up to 48 RPO codes may be displayed from the scanned QR code. It does not include all the RPO codes as displayed in the Investigate Vehicle History."

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Martin Instructor
Burnaby, British Columbia
Martin Default
   

Hi Phil. To be honest, I haven't bothered looking in the glove box where the SPID label for the 2020 Yukon Denali would be in previous years, since I have access to IVH. Even IVH and the SI RPO Code List doesn't always break it down 100%. I have the glove box removed and stored, so will take a look next week to see if it has a SPID label or not. Vehicles are built with various options packages…

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Clinton Owner/Technician
Concord, New Hampshire
Clinton Default
 

First time I ran into this on a Tahoe there was no physical RPO list tag anywhere on the vehicle that you can get at except the QR code. So as far as I can tell they have eliminated the physical RPO code tag altogether on the newer GMs.

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Martin Instructor
Burnaby, British Columbia
Martin Default
 

That is my understanding too Clint from talking with the GM technicians I see daily.

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Martin Instructor
Burnaby, British Columbia
Martin Default
 

Hi Philip. Confirmed, no SPID labels anymore. See my update to the original post adding the "Review Stored Data" RPO tab that is available in GDS 2 session logs.

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Phil Technician
Tewksbury, Massachusetts
Phil Default
 

Thanks for the update. Bummer that the label is gone and you can't count on the QR code storing all the RPOs.

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Bob Owner/Technician
East Longmeadow, Massachusetts
Bob Default
 

Also, all the major part suppliers Napa, Worldpac, Carquest etc. have apps for scanning a vin and then it sends the Info directly to the online parts website. Or you can even search parts on your phone if you prefer.

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Martin Instructor
Burnaby, British Columbia
Martin Default
   

Absolutely Bob. I've used a couple in the past when away from work and helping others. In this trade, we need to be aware of available resources that can make our job easier and assist us in obtaining the right parts first time.

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Ben Mechanic
Chesnee, South Carolina
Ben Default
 

I would like to check this out but it is no longer on Google Play. They have an auto download feature at i-nigma​.​mobi which also is non-functional. Perhaps there is a Apple version available but at the moment is appears that this is does not exist as an Android app.

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Michael Owner
Pelham, Alabama
Michael Default
   

This one works, too... There's a free version (displays ads) and a pay version (no ads, $3). I also just found this Android app which is by a company called Cognex. It's actually a fully-functional demo for their QR/barcode reading technology. No ads, and it can be set to copy the results to your Android device's clipboard automatically.

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