Fuel pump control module question

[Kyle Grasso]

Ok so I just learned my 2011 Sierra 1500 5.3 even has a FPCM when it died on me luckily while idling in my driveway.  I know there are 2 or 3 part #s available for 2011 trucks and that they need to be programmed.  Seeing as how I know this "programming" is nothing more than a simple set of parameters that it puts out for different fuel pressures I'm wondering why there is 3 different parts for just 2011?  I'm guessing that there is also only 3 sets of parameters they used depending on which engine/trans your truck has.  So other than just another manufacturer cash grab to do stupid things that could come already programmed for a reasonable price is there something I'm missing?

[swathdiver]

There are 2, one for trucks with the JL1, Integrated Trailer Brake Controller and one without JL1.

 

20898936 and 20877116

 

These are not plug and play, must be programmed to the vehicle.  If you have Tech-2 or MDI or some other bi-directional scan tool and a laptop, you can do it yourself with subscription with your VIN to ACDelco's TDS/SPS system.

[Kyle Grasso]

Yes I know that but what exactly are you programming?  The vin is only giving very generic info about a specific vehicle so its not like your programming a custom fuel tune into an ecm.  I just bought a FPCM out of a 2011 Buick Regal with the same 20191901 part # on it and it works for my 2011 Sierra.

[swathdiver]

On 12/7/2024 at 2:19 PM, Kyle Grasso said:

Yes I know that but what exactly are you programming?  The vin is only giving very generic info about a specific vehicle so its not like your programming a custom fuel tune into an ecm.  I just bought a FPCM out of a 2011 Buick Regal with the same 20191901 part # on it and it works for my 2011 Sierra.

 

I don't know exactly.  I thought it was mapping tables and injector pulses and pump percentages, etc.?

 

Same gas mileage?  No problem running WOT?  If so, pretty good to know, thanks!