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4500 chassis
The DCM is the gold standard of the Peitz Performance tuning module offerings
HP Tuners ECM unlock
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GMC Sierra 6.2 (2017 - 2018) C8 Fuel System 4500 chassisImprove your truck or SUV's performance and drivability with a Peitz Performance Delta tuning package! We developed these tunes with the overall driving experience in mind. Not only will you gain power at wide open throttle, but you will also feel the difference at part throttle via improved throttle response and quicker shifting. These packages are intended for stock L83 5. 3 liter and L86 6. 2 liter Silverados, Tahoes, and Suburbans. Simply plug
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