GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

The # 4 Injector has went out. If i replaced do i have to…

Customer Question
The # 4...

The # 4 Injector has went out. If i replaced do i have to reprogram it or anything? I've heard that you have to.

Mechanic's Assistant: What is the model/year of your GMC?

09

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No mam

Submitted: 5 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 1 minute by:
3/9/2018
GMC Mechanic: Gunvir Singh,
 replied 5 months ago
Gunvir Singh
Category: GMC
Satisfied Customers: 2,013
Experience: Master Tech at Kennesaw Auto Tech
Verified

Hello, what is your vehicle'e year make and model?

Ask Your Own GMC Question
GMC Mechanic: mike switzer,
 replied 5 months ago
mike switzer
Category: GMC
Satisfied Customers: 751
Experience: lead diagnostic tech at Aamco
Verified

no you do not need to reprogram anything. however i would recommend having the self learn data cleared. this will allow the vehicle to sort out the fuel trims again with the new injector. disconnecting the battery for 30minutes will do this.

Ask Your Own GMC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a gmc mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask mike switzer Your Own Question
mike switzer
mike switzer
mike switzer
Category: GMC
Satisfied Customers: 751
751 Satisfied Customers
Experience: lead diagnostic tech at Aamco

mike switzer 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:

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

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,796 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,588 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

626 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

279 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

270 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

228 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

< Previous | Next >

Related GMC Questions
09" Acadia Service Tire Monitor System warning at every
09" Acadia Service Tire Monitor System warning at every start-up. Dealer who sold it to me replaced all valve bodies. A different service station's monitor showed dashes on all 4 tires. … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
I bought a wrecked 2014 GMC Terrain. I have since changed
I bought a wrecked 2014 GMC Terrain. I have since changed all air bags and put a new front clip on the car. I was able to erase all the diagnostic codes except for 3. They are U0126-00, U0415-00, and … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
270 satisfied customers
09 2500 gmc no mods. 84,000. Pulling 14000# fifth wheel.
09 2500 gmc no mods. 84,000. Pulling 14000# ***** wheel. Have pulled it LOT. Cruz on engine temp 200 Trans 199. Lost 75% powder engine lite on. Set for 1/2 hr ran. But lite still on. Next am ran fine … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
626 satisfied customers
My frear fuel rail is hitting a spot on the engine when I
My frear fuel rail is hitting a spot on the engine when I try to remove it. I can get it out with the injectors attached and get get the clips undone to get them off. … read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
06 duramax blowing black smoke when towing or under
06 duramax blowing black smoke when towing or under acceleration and having engine code p0299 and p0101 … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
It is intermittently running very rough. Like it's running
It is intermittently running very rough. Like it's running on 5 cylinders. The fuel pump was changed a couple years back. I replaced the plugs, and the wires last time I did the plugs. the check engin… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,851 satisfied customers
P0171 failure replaced o2 sensor #1 no help... thinkimg map
p0171 failure replaced o2 sensor #1 no help... thinkimg map sensor because load reads 100$% a lot.. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,851 satisfied customers
GMC Sierra 2500 HD: 2002 lb7 duramax: I've replaced the injectors
2002 lb7 duramax: I've replaced the injectors and I went to install the new fuel injector lines and the first one seems to be a little short, I have to thread them onto the injector, then push to conn… read more
Mark
Mark
Line Technician
Associate Degree
339 satisfied customers
GMC 2500 HD 6.6: hi my name is***** have a 2001 6.6 turbo
hi my name is***** have a 2001 6.6 turbo diesel right now is putting out a lot of white smoke which tells me that the injector but went out to start it and once it started it was making a loud popping… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
GM Sierra Denali: 2002 Sierra Denali. Service 4 wheel steer
2002 Sierra Denali. Service 4 wheel steer light has been intermittent for 8 years, starting about 40k miles. Fails into***** Then after a few days or starts, 4 wheel works fine for weeks and even mont… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
270 satisfied customers
GMC 2500hd: Got a dtc po674 and check eng light , for glow
Got a dtc po674 and check eng light , for glow plug #4 circuit. Got power to #4, but replaced with new glow plug and reset check engine anyway. After 200 miles, eng chk light back on and will not rese… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have 99 Yukon 2wd 5.7 4 dr. The SES lights up whenever I
Hi, I have 99 Yukon 2wd 5.7 4 dr. The SES lights up whenever I accelarate ascending a hill. The code always shows misfire on 3 and 4.It has 138k, bought it with 60k 7 years ago and it's always triped … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Sierra 2500 HD Classic SLT: I have a 2003 2500 HD with
I have a 2003 2500 HD with duramax deisel. At 194,405 km, Sept 09, engine smoking and I had all 8 injectors replaced plus three injector sleeves, work by GMC dealer. At 268,842 km, 15 May 12, engine s… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
GMC Sierra 1500 Classic SLT: Ive been having intermittent
I've been having intermittent 4wd service messages. Then the other day I discovered my truck would not go into 4lo. Today while driving in 2hi all of a sudden my truck went into neutral and would not … read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
848 satisfied customers
GMC Sierra 2500 HD Classic SLE: I have a 04 GMC Sierra 6.6
I have a 04 GMC Sierra 6.6 2500HD, theres alot of smoke when its warm at stops signs and lights, its blue smoke, smells like unburned fuel, its really embarrassing. A Mechanic friend is thinking maybe… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
Hello I have a 2003 GMC Sierra 2500 with the 6.6L Duramax
Hello I have a 2003 GMC Sierra 2500 with the 6.6L Duramax and the injectors are going out and have heard that duramax has extended the warranty on them up to 200000 miles or 7 years and my truck only … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Yukon Denali I have a 2003 yukon denali and am having
I have a 2003 yukon denali and am having trouble with the heated seat. when I turn it on it will shut itself off. Approximately 2 yrs ago the forward and reverse function on the power seat also went h… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Yukon Denali My Denali drivers seat kind of has a mind
My Denali drivers seat kind of has a mind of its own and now will not allow itself to be moved back fron fully forward more that an inch or two. I've turned off all the postion programing as well as d… 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