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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29534
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2002 duramax..glow plug light comes on but i get no power..changing

Resolved Question:

i have a 2002 duramax with the glow plug- heater code I've check the glow plugs and the heater and have power to the glow plug relay, but when the key is turned on the glow plug light comes on but i get no power out of the relay to the plugs or the heater, is their any thing else i should check be for changing the relay?
Submitted: 5 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 5 years ago.
Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

Ok, does the relay in the glow plug controller click?
Where and how are you testing power?
Customer: replied 5 years ago.
not hearing any click, im testing the power with a test light
Expert:  GM Tech (Cam) replied 5 years ago.
OK, these are bad for the relays in the controller, there are two large ones inside and the wiring from the stud to the relay under the cover, and if that is the case you can try to repair it, othewise replace the assembly.

Can you check that out and see?
Customer: replied 5 years ago.
im not sure what im supposed check ,and what is bad for the controler
Expert:  GM Tech (Cam) replied 5 years ago.
You need to take the cover off the top then inspect the wires under the cover and at the eye terminals under the cover.

Under there you will see the same stud that gets the large battery power, has 2 wires on an eye terminal under there. See if there are any loose, and make sure that large wire has power.

Also make sure there are no wires off the 4 pin smaller connector.
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