No way to be sure, or even know how each individual pickup will handle the same amount of fuel from one vehicle to another because of production variances. IOW, my truck may grab air at 1.5 gallons left and yours may draw fine at 1 gallon. Every pickup and sender is a bit different both mechanically and electrically. Also, I've noticed that mine will come on differently if I'm ascending a hill or descending.11B-33T said:1st time seeing the low fuel indicator light come on today and needed to know how much fuel is left in the tank. .