I have an 07 Envoy Denali,

Puddle lights on bottom of mirrors so you won't step in water. Should tell you on the inside of the glove box the axle ratio

Doesn't actually tell you on the Glove Box Lid, just a bunch of code numbers. What activates the Puddle lights ?

key fob when you unlock the doors. Write the numbers down in the glove box and post them.

No not Puddle lights, no one has heard of such a thing. They are actually turn signals. D

They have had puddle lights on vehicles for over 10 years. They don't put turn signals on the bottom of mirrors that shine on the ground.

Bear in mind this is a G.M.C Envoy we're talking about here, not a Ford. These lights have an Amber Bulb under a clear lens and they actually work with the Turn Signals. I have also seen them on quite a few other Vehicles. Thanks anyway. As for the Axle ratios, too many numbers to copy plus the sticker is upside down. The Manual does say either a 3.42 or a 3.73 for the 5.3 8 cylinder engine... D