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  1. Aftermarket Fuel Tanks
    I just put a 100 gallon transfer tank in my 06 GMC Sierra 2500 SLE2 LBZ. Should I have tow mode on when just driving around? Noticed the trans acting a little funny. Taking longer to shift and shifting a bit rough from park into drive. Sometimes shifts a little rough just in-between gears. Not...
  2. EFI Live
    I was wondering what effect EFI tunign has on the tow/haul transmission mode and how it all interacts with say a turbo brake EFI tow tune? Also, does the EFI tow tunes with turbo brake change the shift points of the tow/haul transmission mode? I have used my truck to tow a 6k camper and put it...
1-2 of 2 Results