Chevrolet Corvette 2008 Z06, ZR1 5th and 6th gear

[justinb]

Hello,

I have an 2008 Chevrolet Corvette Z06. We changed the 5th and 6th gear for the ones of a ZR1.

Now everytime when we change to 5th of 6th gear the car goes to reduced power.
When you cycle the power and restart you can easily drive 1st-4th gear. As soon as you shift up to 5th gear it goes to reduced power.

I have attached the file, hope you guys can help us out!

[RobZL1]

Which DTC(s) are set? That should help you figure it out.

[Jon S.]

The "ECM 20090 - Trans Gear Ratios" table has only been added to some operating systems.

Adjusting this table MAY get you going.

If this table is not currently available for your specific operating system, you will need to contact the kind folks at HP Tuners, and request that it be added for your operating system.
2009 Corvette LS3 6-speed manual transmission - ECM 20090.jpg

[RobZL1]

Cool. That's a new one to me!