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I have a 2008 GMC 5500. When I turn the headlights on I have…

Customer Question
I have a 2008...

I have a 2008 GMC 5500. When I turn the headlights on I have no low beam. The high beams will turn on when I hit the dimmer switch. It has a new dimmer switch, light switch, and I’ve tested all fuses and relays. Any suggestions?

Mechanic's Assistant: Have you checked the fuses? Have you checked the bulbs?

Bulbs are in a sealed unit and all 4 come on when high beams are turned on

Mechanic's Assistant: What is the model of your '08 GMC?

C5500

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

New dimmer switch, new light switch, tested drl fuse and relay in cab and tested fuse under the hood

Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you?

I put a new instrument cluster in the truck about a week ago. The parts guy said he spoke with delfi and they said it would have nothing to do with the headlights

Submitted: 2 years ago.Category: Medium and Heavy Trucks
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Answered in 1 hour by:
3/2/2020
Technician: Wayne, Journeyman replied 2 years ago
Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 17,967
Experience: worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
Verified

Hi, I'm Wayne.

I'll be assisting you with this issue today.

Thank you for coming to Just Answer

Your Question is as important to us as it is to you.

I am sorry to hear you are having this issue.

That is not true, The grounds go through the dashboard also.

Your issue is a poor ground.

I suggest getting another dash.

Wayne

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Wayne
Wayne
Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 17,967
17,967 Satisfied Customers
Experience: worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

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