snap on solus/pinion factor??
 

does anybody know if the snap on solus will change the pinion factor on my 04.5 truck? my buddy has one but could not find the correct menu- i guess. if the snap on solus can does anybody know the correct path way through solus? thanks.

Let me see if I can find it, I did mine a few months back.

I found it. The setting is in the ABS menu. There is a couple choices for tire size, or you can enter the revolutions.

thanks. i appreciate it.

speedo calibration
 

I recently put 285/75/17 Nitto Dura Grapplers on my truck, of course the speedo was off. Took the truck to a local dealer, but the tech selected 285/70/17 which equates to 2mph off at 60 MPH. After a 225 mile trip my odometer was already off by 7 miles so I took my truck back to the dealer and got a chance to speak with the tech. He said prior to 2006 he could select the number of revolutions, but on the 2006 and newer trucks he only has a few tire sizes to choose from. He let me look over his shoulder and the tire sizes listed were complete BS (305/40/22 was one of them). What I did notice was the scan tool gave the tech a gear ratio option. Should I ask the tech to select another gear ratio? My truck is a 6sp, so I'm not worried about shift points....just not sure what changing the gear ration (in the computer's mind) will do. The gear ration options are 3.55, 3.73, and 3.92. I have the 3.73 and if my math is correct selecting the 3.92 will get my 2mph back and my speedo should be pretty accurate. Any suggestions?

I heard the changes are more limited on '06 and later models. Looks like they only give you factory options. After adjusting my '05, it is dead on according to my GPS.