Harsh or Firm 5-4 Downshift – 2015-2016 Ford F-150
HARSH OR FIRM 5-4 DOWNSHIFT FORD: 2015-2016 F-150 ISSUE: Some 2015-2016 F-150 vehicles may exhibit a harsh or firm 5-4 downshift. 5.0L, 3.5L twin independent variable cam timing (Ti-VCT), and 3.5L gas turbocharged direct injection (GTDI) vehicles built on or before 12/18/2015 and 2.7L GTDI vehicles built on or before 12/18/15 are affected. … Read more