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With the engine running an turn the headlight switch on the

Customer Question
engine goes into reduced power...
with the engine running an turn the headlight switch on the engine goes into reduced power mode. If you pull the dimmer the engine dies.
JA: Have you checked the fuses? Have you checked the bulbs?
Customer: yes, i turned off the engine an heard the headlight relay clicking. replaced the hi & low relays.
JA: What is the model/year of your GMC?
Customer: 2006 GMC 1500
JA: Are you fixing your 2500 yourself? What have you tried so far?
Customer: yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: I have replace the MAP sensor, MAF sensor Air Temp sensor throttle pedal and the throttle body.
Submitted: 1 month ago.Category: GMC
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Answered in 4 minutes by:
10/23/2017
GMC Mechanic: roybelding, Master Tech/Trainer replied 1 month ago
roybelding
roybelding, Master Tech/Trainer
Category: GMC
Satisfied Customers: 6,484
Experience: 35 years of retail operations on all vehicles
Verified

hello, my name is ***** ***** I will be glad to assist you. please allow me a couple of minutes to gather some basic info.

Roy

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GMC Mechanic: roybelding, Master Tech/Trainer replied 1 month ago

good afternoon

how old is the battery??? it sounds like a low voltage issue

is the check engine light on?? if so, do you have the codes???

Roy

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GMC Mechanic: roybelding, Master Tech/Trainer replied 1 month ago

do you still need any help

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Ask roybelding Your Own Question
roybelding
roybelding
roybelding, Master Tech/Trainer
Category: GMC
Satisfied Customers: 6,484
6,484 Satisfied Customers
Experience: 35 years of retail operations on all vehicles

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