I have an issue with radio has power radio shows everything working but no volume at times, will go out for days and then just come back on, thought it was radio so purchased a new one and still doing same thing., when it does work only have front speakers. Has Bose system.

Also service 4WD light on and will not switch in 4 WD at times unless I turn truck off and when turning back on hit the buttons to change same thing to get back into 2 WD. Replaced switch, actuator, had programmed.

Any help would be appreciated....

 

Does anyone have ideas on what to check for the radio or 4WD issue. Radio only works for short time now and have a trip coming up. Radio shows it is playing but no volume. At time you can hear a clicking noise throughout the truck and then the radio either comes on or goes off depending.