(2) 2007 5.3ltr & (1) 2008 6.0ltr
Originally rev limit's were set to 6300-6500RPM's but none of the engine's would rev past 5,500RPM's...so I went thru and set every rev limiter function to 8,000RPM's to try and figure which function in the Tune was causing this and nothing...All 3 vehicles are mated with TH350 transmission's
I attached a 2007 5.3 file