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Roy
Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 4981
Experience:  ASE master tech for 40 years
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2011 3500 HD no high beam New multi switch all fuses good

Customer Question

2011 3500 HD no high beam New multi switch all fuses good and relays. no reaction when lever is pulled or pushed with the lights turned on???
JA: Have you checked the bulbs and fuses?
Customer: yah
JA: Are you fixing your 3500 yourself? What have you tried so far?
Customer: Ok replaced bulbs, checked fuses and relays, replaced multi switch turned lights on manually high beams do not come on pushing or pulling on multi lever!
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 4 months ago.
Category: Chevy
Expert:  Roy replied 4 months ago.

good morning my name is ***** ***** I will assist

do the low beams stay on when you go to high beams???

Roy

Customer: replied 4 months ago.
Ya
Customer: replied 4 months ago.
Could the drive cause problems
Customer: replied 4 months ago.
Drl
Expert:  Roy replied 4 months ago.

do you have a scan tool???

the body control module controls this function based on the input from the dimmer switch. attached is a wire diagram for you to view.

Roy

Customer: replied 4 months ago.
Where is the bcm located? I have a generic scan tool I'll hook up n see what I can find
Expert:  Roy replied 4 months ago.

you need a real scan tool that can access the BCM. a reader will not work.

let me get the location

Roy

Expert:  Roy replied 4 months ago.

check attached