6.6L VIN 8 LML P161A after GPCM Replacement and copy of flow rate codes

Darren Owner/Technician Bonner Springs, Kansas Posted   Latest   Edited  
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Driveability
Programming
2013 Chevrolet Silverado 2500 HD LTZ 6.6L (8 LML) 6-spd (1000)
P161a - Glow Plug Control Module Not Programmed

Replaced glow plug control module. Copied fuel injectors flow codes to glow plug control module then let power down two minutes per instructions. Checked both ECM and GPCM match flow codes but code P161A glow plug control module not programmed is active. Per repair info copy of injector flow codes was all that was needed. Anybody had this issue before?

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Danny Instructor
Montréal, Quebec
Danny Default
 

You need to reflash the glow plug module it comes with no soft ware in it.

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Danny Instructor
Montréal, Quebec
Danny Default
 

Note: The glow plug control module (GPCM) does not allow programming if its temperature is above 60°C (140°F). The following service procedure requires either a programming or a setup event performed for a complete repair. GPCM Replacement If the GPCM is replaced, the following procedures must be performed: - Enable GPCM programming – Refer to Service Programming System (SPS). - for fuel…

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Scott Owner
Moreno Valley, California
Scott Default
 

Hi Darren, As Danny correctly pointed out the GPCM needs to be programmed. If you ever have a question - Does this replacement module need to be programmed? GM lets you check what modules are programmable with TIS2Web - tis2web​.​service​.​gm​.​com/tis2web You can also check to see what calibration files are currently in the module and whether or not there…

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Darren Owner/Technician
Bonner Springs, Kansas
Darren Default
 

Yes i own an mdi 2 and have flashed with it. Im currently having issues with it and cant get the laptop and the mdi to talk to each other. Thanks for the reply.

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Scott Owner
Moreno Valley, California
Scott Default
 

You might take a look at this post that John Rogers put up. diag​.​net/msg/m6u242jmu5… I'm not sure if this is what you have going on. If all else fails you can call AC Delco and see if they can assist.

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Matt Technical Support Specialist
Dallas, Texas
Matt Default
 

community​.​alldata​.​com/questions/3878…

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Caleb Diagnostician
Mishawaka, Indiana
Caleb Default
 

Yes you have to flash the GPCM with SPS before copying the flow rates.

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Darren Owner/Technician
Bonner Springs, Kansas
Darren Default
 

Thank You

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