'03 Denali Intermittent Nav Screen, A/c, Power Locks Etc

[mho]

My wifes '03 GMC Denali intermittently loses the Navigation Screen/Radio/CD, A/C, Power Windows, Seats, etc. I was in the car once when it happen and what we first noticed was the Nav screen go black, like the switch was off. I came back on momentarily. Now it has happened again 3 days later. She called the dealer and they mentioned that it might be the BCM(Body Control Module). Does anyone have any history with a problem like this? I haven't tried to diagnose anthing yet, but I will have to ASAP.

Thanks

[mho]

My wifes '03 GMC Denali intermittently loses the Navigation Screen/Radio/CD, A/C, Power Windows, Seats, etc. I was in the car once when it happen and what we first noticed was the Nav screen go black, like the switch was off. I came back on momentarily. Now it has happened again 3 days later. She called the dealer and they mentioned that it might be the BCM(Body Control Module). Does anyone have any history with a problem like this? I haven't tried to diagnose anthing yet, but I will have to ASAP.

Thanks

 

Has no one run into a similar problem??? Help, my wife wants a new Denali but I can't afford one. So having an intermittent problem doesn't help my cause. I heard that it could be a BCM; a FCM or a bad ground.

Help