What gear ratio does a 2006 GMC Sierra Denali have? Gmc Sierra Gear Ratio Chart
How to determine gear ratio on a differential. Gear Ratios 101: What's better? 3.73 or 4.10? | A Simple Breakdown w/ Driving Examples how to identify gear ratio on gm trucks and cars My '06 has a trailering package and it's final drive is 3.23:1. That equates to about 1700-2000RPM in highway cruise. Real life mileage varies from 15-17mpg. Ordering the right axle ration can further help tailor a new GMC truck or SUV to your particular needs, especially if trailering. ...