Re-gear my 07 Denali XL?

[Brock]

I have 34" tires & immediately noticed a drop in low end power plus a constant switching between 5th & 6th gear at hi-way speeds. It has the factory towing pkg. Don't know what the stock gear ratio is, or how to find out, but I have been told a 410 or higher switch is the solution.

Does anyone have this problem, or changed their gear ratio? 4 Wheel Parts quoted me $1600 for both axles...OUCH!

My MPG is at best 14.5 interstate & single digits in town!

 

[iwaslowr]

You can determine the OEM gears with the VIN if I'm not mistaken...

 

[2011Tahoe]

1600$ is pretty normal, thats the only way to fix the problem unfourtunatly. Usually front end runs about $1k-1100. Since it is IFS.