Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
HP Tuners PCM upgrade service for GM E90-based L84 and L87 powertrains is a send-in programming option that replaces or updates the vehicle control module. The service requires mailing in the PCM for reprogramming and is listed as the GM E90 ECM upgrade, providing calibrated module modification performed by HP Tuners to update the vehicle’s electronic control module.
HPT GM E90 L84 & L87 PCM Upgrade (*Must Mail in PCM*)
