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When i turn my lights on my 99 suburban they come on and…

Customer Question
when i turn my lights...
when i turn my lights on my 99 suburban they come on and stay on for about 10 min then go off for about 2 min then back on they continue this cycle til you turn them them off. the daytime running lights do not work and have not worked for a long time this problem started after i replaced the headlight switch that was bad
Submitted: 2 years ago.Category: Chevy
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Answered in 2 hours by:
1/29/2016
Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago
Lou P.
Lou P., ASE Certified Technician
Category: Chevy
Satisfied Customers: 5,902
Experience: Building and driving Chevy's since I was in the womb!!!! Camaro and Corvette enthusiast, access to factory diagrams and tsb's
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Hello. Have you since swapped the switch once again ? It sounds to me like the issue is temperature related. Where once the circuit heats up connection breaks until it cools down

Then it makes connection again.

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Customer reply replied 2 years ago
i changed the switch again still the same
Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Ok if you have a test light and a voltmeter I can walk you through some test steps tomorrow if you will be around

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Customer reply replied 2 years ago
Ok
Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Ok I'll upload a few diagrams soon and give you a path

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Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Just to confirm what specific lights flash ? So I can get you the correct diagram

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Customer reply replied 2 years ago
Just the head lights when it happens both high and low beam are affected
Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Ok thanks. I'll get the diagrams

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Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

Going over it all , you said the issue did not start until you replaced the headlight switch ?

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Chevy Mechanic: Lou P., ASE Certified Technician replied 2 years ago

On the headlight switch I need you to verify there is a yellow and a red wire they should be terminal g and c of the connector. When the problem happens verify with a test light there is constant power on the red wire. Then if there is check the yellow wire to see if the power flashes with the lights.

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Lou P.
Lou P.
Lou P., ASE Certified Technician
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Experience: Building and driving Chevy's since I was in the womb!!!! Camaro and Corvette enthusiast, access to factory diagrams and tsb's

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