[GMguy2155]

Hello All,

I just picked up a 2008 STS. For some reason the navigation unit will not turn on. None of the buttons on the unit respond, including the CD drives. All fuses look ok. The car seems to have a parasitic draw since a new battery is dead within 3 days. Any ideas on where to start?

 

[GMguy2155]

also the buttons in the unit do light up

 

[dkozloski]

Your NAV has pooped the bed. Go to Ebay or www.car-parts.com to get a replacement. It takes a TEC2 to install it.

 

[lances2000]

n

What is a TEC2?

 

[dkozloski]

A TEC2 is a GM shop tool that is both a scan tool and a service programmer. A replacement NAV has to be programmed with the VIN number of the vehicle it's installed in for anti-theft purposes.

 

[targetSTS]

try to disconnect battery cables for a few minutes and than connect them in order: first possitive, than negative.
i saw this happened a few times after battery disconnection