I have a buick lesabre (2003) and the blower stopped working, pretty sure it'* a loose wire. My question is ... how to gain access to the rear of the climate controls without taking off the entire dashboard? Can I get access from where the ashtray is? The controls are just above it.

Why do you think it'* a loose wire?

First place I would check is the harness to the blower motor....check for power and ground, and that the connector is not melted.....if you have power and ground, reconnect and give the housing a tap with the handle of a screw driver....

Is this auto temp or manual?

I think it'* a loose wire because when I tap on the dash just under the controls the fan starts and stops

That tap could be enough, to be similar to tapping the housing of the motor...

the blower motor is located on the firewall not under the dash

I think in a 2003 it'* under the dash, passenger side....get under there and grab the harness and see if it has any affect...also tap the housing....

Thank you very much, it WAS the connector on the blower motor (worked itself loose) cleaned the connector and it'* working great Thanks again