Noise from the rear sounds like the ac/heat unit in the rear. The rear heat I cant get it to work and when the truck is running I hear a bubbling sound or something in the back on the side where the rear unit is. The passenger side rear. anyone know what this could be? I may try to take the rear panel off and take a look. But yeah the rear heat wont come on. the blower works and blows but no heat. hmmm
