2007 Chevy Classic 5.3 Z71

[[email protected]]

U7192
I have a 2007 Chevy Silverado Classic with the 5.3L Z71
I was able to load the Factory HP tune on the truck but can not find where to correct the speedometer. I have oversized truck tires and would like to have it read the correct speed. I called the help line and was on it twice for about 15 to 20 minutes each time waiting to talk to someone. Please help.

[06MonteSS]

Factory HP Tune is only a copy of your original stock GM tune... that's not a performance tune...

the Diablo Tune is a performance tune, made for 91/93 octane gas... and the 87 octane tune is a performance tune...

the one you loaded is just a copy of the stock original GM tune, with no performance changes at all.

to change the tire size, you need to go into modify tune and look for tire size or wheel size...

[[email protected]]

I does not give me an option to choose a performance tune. I do have a K&N intake and flowmasters on my truck.

[06MonteSS]

k... this is a trinity, correct??

or a predator?? you listed a predator model in your origninal post, which is the wrong model predator for your truck anyway... if this was a predator, you would need a U7194 model predator, not a 7192...

what revision is on it?? for a trinity, go to the options, show information selection and it will tell you... if it's a predator, it'll have a revision number at the top of the screen...

either way, you need to get an update, since apparently your truck calibration is not supported, because you should have the performance tunes listed, not just the factory hp tune...


and yes, the tech support lines take a bit... gotta just hang on, they'll get to 'em...