Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Glow plugs on my Chevy duramax not working. Replaced glow…

Customer Question
Glow plugs on my Chevy...
Glow plugs on my Chevy duramax not working. Replaced glow plugs replaced module. Tested glow plugs individually with test light and they work. Truck will not start unless block heater is plugged in or its warn outside. What else could it be?
Submitted: 2 years ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 1 hour by:
3/9/2016
Chevy Mechanic: Juan Crespo, ASE Certified Technician replied 2 years ago
Juan Crespo
Juan Crespo, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1,532
Experience: A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
Verified

Which Duramax, VIN 1 or VIN 2?

Ask Your Own Chevy Question
Customer reply replied 2 years ago
Vin 2. LLY
Chevy Mechanic: Juan Crespo, ASE Certified Technician replied 2 years ago

Ok. You caught me on my way out. Give me a couple of minutes to reset. Be back in a bit...

Ask Your Own Chevy Question
Chevy Mechanic: Juan Crespo, ASE Certified Technician replied 2 years ago

OK. These are low voltage glow plugs that work based on pulse-width signals, so using a regular test light on any of these circuits might actually do more harm that good. Also, each of the glow plugs is monitored individually, so any fault detected with either one of them or with the controller should set a fault code. Any chance of getting this puppy scanned with something better than just a code reader?

Ask Your Own Chevy Question
Customer reply replied 2 years ago
I had it into the dealer they told me there was nothing wrong with the system. That's why I'm at a loss. They're best guess was the injectors all needed replacing but that doesn't explain why it starts fine when it's warm. What would I look for if I can get it scanned?
Customer reply replied 2 years ago
Also I would note that this problem occurred immediately after the headgaskets were changed. The new glow plugs were installed at that time.
Chevy Mechanic: Juan Crespo, ASE Certified Technician replied 2 years ago

I wish you had told me this before. At this point I don't have any information that could help you. I'll have to opt out so others may try. Please don't reply to this post until another expert responds or the site will cycle this request back to me.

Ask Your Own Chevy Question
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Chevy
Satisfied Customers: 51,651
Experience: 16 years of experience
Verified

Welcome, I'm Chris (aka Moose). Experts aren't employees / agents of Just Answer. We are independent service providers using the Site to sell their Expert knowledge to Customers. I strive to provide EXCELLENT 5 STAR service, let me know what's needed from me so your pleased.

  1. The previous tech has opted out. Would you like me to help?
Ask Your Own Chevy Question
Customer reply replied 2 years ago
You bet
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Have you removed a glow plug and grounded it, turned the key on to see if the plug is getting hot or not?

Ask Your Own Chevy Question
Customer reply replied 2 years ago
I didn't leave it hooked up but I did take a few out and tested them with a battery and yes they got hot. That would have made more sense by keeping it hooked up though
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Is that something you can try?

Ask Your Own Chevy Question
Customer reply replied 2 years ago
You bet. As soon as I get home I'll try it and let you know.
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Super

Ask Your Own Chevy Question
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Hello again Chris here,

1) When customers come to Just Answer the website and the experts want them to have a great 5 star experience.

2) We also want them to be so pleased that they come back for future needs.

3) I have the feeling you were not pleased with my help and or need me to help more. If so please do reply.

4) I have an option to upload diagrams, repair guides, find a repair facility, or call you if that would help.

Thanks Chris

Ask Your Own Chevy Question
Customer reply replied 2 years ago
Sorry Chris I haven't made it home yet to try your recommendation. I got sent out for work and It'll be another week before I can work on the truck again. I hope we can continue this conversation at that time.
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Thanks for keeping in touch.

Ask Your Own Chevy Question
Customer reply replied 2 years ago
Hey Chris I tried what you suggested and no the glow plug didn't get hot. It didn't even warm up a little bit. What should I check next?
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

The glow plug controller powers the glow plugs. At the controller confirm the red wire is power. Pink power with the key on. Pink/yellow ground. If all pass then see if a scan tool can communicate with it. If so then your controller is to blame.

-------------------------------------------------------------------------------------

On your screen you should see a rating 1-5 stars. Please make sure to select one. I am not compensated by the website unless a customer rates. Rating only pays me from the deposit you have already made, it does not charge you more, nor close the post. Also all follow ups are free and welcome.

Thanks Chris

Ask Your Own Chevy Question
Customer reply replied 2 years ago
I checked a few things
1. The glow plug controller plug I found power at the pink wire with key on only. No other wire gave a reading with the key off. Ground was ok. The single grey plug that connects to the controller shows 12v with key off.
2. Checked the voltage at the glow plug with key on and glow plug light on and it showed around 7v. I read that it should be around 4v not sure if that's true or not.So when this problem started the first thing I did was replace the controller and all the glow plugs. No codes came up and the gp light operates normal. Is there anything like a temperature sensor that would prevent the plugs from turning on?
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Are there no codes stored?

Will your scan tool communicate with the glow plug control module?

Ask Your Own Chevy Question
Customer reply replied 2 years ago
My scan tool is just a simple code reader it can't communicate with the glow plugs. I pulled one of the electrical connectors off a glow plug to see if it would trip a code but it didn't. Next step is get or borrow a scan tool that can't communicate with the gp controller?
Chevy Mechanic: Chris (aka-Moose), Technician replied 2 years ago

Thanks for the update.

Ask Your Own Chevy Question
Was this answer helpful?
Ask Chris (aka-Moose) Your Own Question
Chris (aka-Moose)
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Chevy
Satisfied Customers: 51,651
51,651 Satisfied Customers
Experience: 16 years of experience

Chris (aka-Moose) is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
Transmission went out in my 2008 chevy 1500 and i have a
transmission went out in my 2008 chevy 1500 and i have a good trans from a 2005 chevy 1500. i need to find out if they will interchange. theyre both 4l60e transmissions … read more
roy
roy
Associate Degree
3 satisfied customers
I have a 2002 silverado 2500 HD 4 x 4 with a 6.6 Litre
i have a 2002 silverado 2500 HD 4 x 4 with a 6.6 Litre Duramax. off and on it decides it will not start even though the starter works. no fuel. so after pumping the pump at the top of the fuel filter … read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
I have a 2001 Chevy Blazer. I was driving the other day and
I have a 2001 Chevy Blazer. I was driving the other day and all of a sudden the battery-shaped light came on and I lost power. Can't remember if the truck died or if I turned the ignition off, but the… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
2012 Chevy Cruze 1.4 Ecotec. Little bypass coolant hose by
2012 Chevy Cruze 1.4 Ecotec. Little bypass coolant hose by the two radiator hoses burst. Totally disintegrated on the inside, but just in that one spot on the lower end right before the clamp. Probabl… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Do i have to remove door panel to replace window switch in
do i have to remove door panel to replace window switch in C6 Coervette … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
My 2006 Corvette is idling high at initial start and
My 2006 Corvette is idling high at initial start and eventually hangs at 650 rpm's. If i tap the accelerator the rpm's will hold at 800 rpm's for around 20 secs the rest at 650. This issue started onc… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
91 satisfied customers
2012 impala police starts and runs for about 2 min then
2012 impala police starts and runs for about 2 min then stalls the dash light flicker and the relays click in fuse box and the car wont start let it stand for 10 min will start run fine and stall bat … read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
51,651 satisfied customers
Order housing steer wheel what holds signal lever. 1980
Order housing steer wheel what holds signal lever JA: Okay, I'll connect you to the mechanic to discuss this further with you. Before I do, is there anything else you want him to know? Customer: 1980 … read more
roy
roy
Associate Degree
3 satisfied customers
Evap system leak. 2007 tahoe daily diver. Im gonna try, only
evap system leak JA: How old are the hoses? And what driving conditions do you most often encounter? Customer: 2007 tahoe daily diver JA: Are you fixing your Tahoe yourself? What have you tried so far… read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
I have a 2007 Chevy Impala. The lever shifts up and down but
I have a 2007 Chevy Impala. The lever shifts up and down but doesn't move out of park. What could be the issue? … read more
roy
roy
Associate Degree
3 satisfied customers
I went to a pertronix electronic ignition and now i took a
I went to a pertronix electronic ignition and now i took a good running motor and can't get it to fire. i wonder if the line on the harmonic balancer was not right- it's an original 1970 350 with 43K … read more
Joecamel90
Joecamel90
Technician
Associate Degree
24 satisfied customers
Got a jump from triple A now my instrument panel won't light
Got a jump from triple A now my instrument panel won't light up and gauges don't work … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 1998 chevy sliveradro and had the B1051 Deployment
Hello, I have a 1998 chevy sliveradro and had the B1051 Deployment Command. I repaired the SRS module with a well know company. The error code B1051 Deployment Command is gone now. Currently i am gett… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Coolant leak. Not the hoses seems to be coming from whats
not the hoses seems to be coming from whats looks like the pulleys are mounted on … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Have a 98 gmc k1500 5.7 replaceD fuel pump ran three days
Have a 98 gmc k1500 5.7 replaceD fuel pump ran three days parked and tried to start cranks but won't start have fire replaced spider injection still no start can hear fuel pump come on checked cap and… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
What size bolts are on a 2009 GMC Sierra 1500 front lower
What size bolts are on a 2009 GMC Sierra 1500 front lower control arm and where can I get them … read more
HondaPlatinum
HondaPlatinum
High School or GED
148 satisfied customers
Our 2006 colbolt engine light came back on again we had it
Our 2006 colbolt engine light came back on again we had it fixed 60 days ago. We took it back and now they are saying we need a new transmission valve body? What do you think r … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
While driving it will stall out, if at highway speed it
While driving it will stall out, if at highway speed it starts running again (it disengages the cruise) but keeps going. at low speed it just stalls out, normally starts back up. Lately it will not do… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x