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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Anyone there for a diesel silvarado 2013 exhaust system

Customer Question

anyone there for a diesel silvarado 2013 exhaust system light
Submitted: 1 month ago.
Category: Chevy
Expert:  Ricardo Hohl replied 1 month ago.

Hi welcome to just answers my name is Ricardo. have you check for any codes stored on computer?

Customer: replied 1 month ago.
Glow plug number 6
Expert:  Ricardo Hohl replied 1 month ago.

does the engine starts? fine and runs fine?

Customer: replied 1 month ago.
Yeah with no problem, except for that indication of service exhaust
Customer: replied 1 month ago.
Now it's reading 100 miles can't go over 65
Customer: replied 1 month ago.
Def fluid is fine, didn't get indication of being low
Customer: replied 1 month ago.
Before any of this
Expert:  Ricardo Hohl replied 1 month ago.

ok if you have a code for glow plug# ***** is possible the injector or the glow plug on that cylinder has a problem have you check the resistance on that glow plug or switch that glow plug to another cylinder see if the code changes with the location

Expert:  Ricardo Hohl replied 1 month ago.

or check the Glow Plug Control Module (GPCM) scan data list for the resistance of the #6 glow plug.
A good value will be 0.4 - 0.9 ohms. If greater than spec, check the resistance of the glow plug.
If the resistance is out of spec, replace the glow plug.

Customer: replied 1 month ago.
Ok Thank you. I'll try that. Do you know if their was a recall on the year and make of the truck regarding this issue. This happened to me last year and I end up paying little over 1000 dollars in repairs
Customer: replied 1 month ago.
Couldn't regenerate that's what the chevy mechanic said
Expert:  Ricardo Hohl replied 1 month ago.

let me check give me a minute

Expert:  Ricardo Hohl replied 1 month ago.

no recalls or TSB's found that will mach this problem sorry all i found is about having difficulty removing and replacing the glow plugs do to carbon build up.

Expert:  Ricardo Hohl replied 1 month ago.

let me know how that works out relocate the glow plug or check resistance on it see if ok , and also it will help if you scan the computer and give me any codes you find see if you have a P20b9 code and let me know.

Customer: replied 1 month ago.
Will do.. Thank you very much
Expert:  Ricardo Hohl replied 1 month ago.

no problem good night.