put a new set of wheels and tires on and used my hypertech to change the speedo for the different hight, now getting ABS lights and parking brake lights. sometimes the lights will go out when i shut it off and start it again but it is getting real annoying.why is this and what can i do to fix it?

 

did you put different sizes from front to back. are all the tires the same size. did you check the measurements of the tires.

 

all 4 are the same size just not stock size

 

go to tire rack and check the sizes in there. what is the tire size you put on.

 

make sure you didn't change the gear ratio in the hpp3 you could be confusing the truck and check your tire height on the hpp3 again later, kevin

 

What is the overall diameter of the tires that you used, and what gear ratio is in the truck?