2019 ram 1500 LONGHORN 5.7 HEMI (NOT A CLASSIC) FLUCTUATES + OR- 5 KM/HR (10KM/HR SWING) CAN NOT HOLD A CONSTANT SPEED . WITH THE SLIGHEST INCLINE IT DOWNSHIFTS SLIGHTLY MORE DOWNSHIFTS 2 AND EVEN UP TO 3 SHIFTS. HAVE A JEEP GRAND CHEROKEE DOES NOT DO THIS AND THE SAME FOR A GM VEHICLE I HAVE DOES NOT ACT UP AS DESCRIBED. HAD VEHICLE IN ON NUMEROUS OCCASIONS RE COMPLAINT. EVERYTIME CHECKED "OK". EVEN CHECKED THE TRANSMISSION 8 SPEED AGAIN CHECKED "OK". EMBARRISSING TO DRIVE. CONVINCED A CONTROL MODULE IS JUST "LAZY"!!!. IS THERE A FIX?