2021 1500 Sierra Denali Ultimate programming question

Phil Godfrey

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Hello all,

I have a 2021 1500 Sierra Denali that I'd like to do some quick modifications to. On my older 2017 Ford Expedition Limited, we used a tool called ForScan and could edit parameters on body control modules, change the duration of run time when using remote start and program your turn signals to flash a certain number of times.

My question is, what options do GMC owners have? I'd like to make the default (3 times) turn signal flash to 7 times. I've dug around the internet and found very little.



Thanks in advance,

Phil
 


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