chevy791979
Silver Member
It's referring to the exhaust throttle valve.   It is either not working or is out of adjustment.        I'm betting it is a bad actuator.   But I'd verify power and such before replacing it
	
		
			
		
		
	
				
			Good to hear. Sounds to me your dealer needs a lesson on how to take care of a customer. I know we would never treat you like that.
Can you send me the manual repair of 4066m?This is a DTAC case describing it View attachment 575903View attachment 575904View attachment 575905