Help Please

Hello can anyone help?

 

Those are glow plug codes. I've had two replaced on mine, one a couple of times. Also had the glow plug module replaced because even when the dealer replaced (under warranty) the same one a couple of times, they replaced the module. When I asked if this was common of the service mgr., he said no, but I think otherwise.

Mike

 

Which glow plug is where?
#1 #2 etc?

thanks

 

1, 3, 5, and 7 are on the passenger side. 2, 4, 6, and 8 are on the drivers side. Total opposite from a regular GM V8 gasser.

 

I had #4 replaced a few months ago. The next time one goes I'll be replacing in myself.

 

it's pretty easy, you can find the glow plugs for roughly 15-20 depending on where you get them from.

fyi to check them you can take an ohm meter and put one lead on the pin of the glow plug and the other on the block. usually the resistance is less than 1 ohm. if the glow plug is bad it will have a much higher ohm reading. I do this just to make sure I have the right cylinder. yes I've replaced the wrong glow plug before....

 

Thank you!

 

Should i be seeing a problem with my truck?
Like i said it runs and drives fine.....
Is this something that needs fixing?

 

If it is just glow plugs being out you wouldn't notice any difference at all in engine operation. Only when starting the engine in really cold weather would you see the effects of the glow plugs being bad. How many miles are on your truck? With low miles it would be unusual to have 3 plugs go bad. Dealers in my area cover glow plugs under the 100k warranty. I changed out one myself before I knew about the warranty coverage. Wasn't bad & only spent $15.

 

100k, out of warranty....never really get scold in western ky anymore 70 today!
thanks for your help

 

I had the P0673 glow plug 3 control circuit code come up today and was wondering if I run some Power Service Diesel Keen in the tank if that could help? If not I will try to replace it my self. My truck has about 26500 miles on it.

 

I had the P0673 glow plug 3 control circuit code come up today and was wondering if I run some Power Service Diesel Kleen in the tank if that could help? If not I will try to replace it my self. My truck has about 26500 miles on it.

I ordered a new glow plug from Napa and should be here tomorrow so we'll see how it goes from there.

 

Unfortunetly the diesel kleen won't help. It's just a bad glow plug. It's an easy fix. Your #3 plug is second one back on the passenger side. Just remove the fender liner and it's all right there in front of you. Do yourself a favor, put a little never seize on the threads on the new one.



Sent from AutoGuide.com App

 

Thanks, I have some anti-seize to put on it. I check the mileage -- 27,673 which is low miles to have something like this happen.

 

I agree. I do have a friend that works at a GMC dealership and he says he does a lot of glow plugs. Some people on here say no but he has no reason to lie.


Sent from AutoGuide.com App

 

GM engineer friend told me to replace with newer glow plug part # 12639701. This part was first used in 2013 and will work in all duramax from 2006 to present.

 

Update, I got the glow plug in quick and easy, the old one came out without a problem. I cleared the code and it hasn't come on yet but we'll see in the morning when it's cold. Truck has 27698 miles with 976.7hrs. I'll try to post some pics.

 

Here is some pics.

:nopics:

 

Glad all went well for you!! I'm sure all will be fine..


Sent from AutoGuide.com App