Trouble codes when regearing

[05bluebeauty]

Here is the problem i am having, Hopefully someone has had this problem and has a solution. I have a 6 inch lift on my truck with 35x12.5 tires and just got 4.56 gear. Everything works great and i love the setup, but i am now getting my brake and abs lights on. also getting 3 troubles listed below. If anyone knows a solution please let me know

c0035
c0040
c0245

[silveradotrailblazer]

You need a programmer such as the Diablo Preditor to adjust the ecm for the new gear and tire size. You ecm is confused with the new changes because it was calibrated for the stock gears and tires. The Diablo also lets you tunethe engine and tranny.

[05bluebeauty]

I have a hypertech programmer that is programmed to my 35's and 4.56s and still get the codes

[silveradotrailblazer]

Try progamming back to stock and reinstall the Hypertech tune.

[05bluebeauty]

Already did, still get codes

[silveradotrailblazer]

Hope I dont offend you with this question but are you sure your entering the info correctly? Other than that I would call Hypertechs tech line.

[05bluebeauty]

Yes i correctly entered all information as i am i very familiar with these tuners and working around trucks and cars. Have called hypertech and they give me nothing but the im sorry there is nothing we can do

[05bluebeauty]

Just spoke with the 5th guy there and he said to lie to the computer and bring the tire size down and that might fix the problem

[silveradotrailblazer]

Most 35x12.50s are about 34" tall not a true 35". Maybe try entering 34".

[05bluebeauty]

Ya gonna try that and see if that works. i hate lights being on on my dash