GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

I gave a fuel pump issue, just installed new Delphi, came…

Customer Question
I gave a fuel...

I gave a fuel pump issue, just installed new Delphi, came with harness wired and installed it nothing happening.

Mechanic's Assistant: Have you ever replaced the fuel pump, or is this the original?

I believe it's the original, square 4 wire connector, new one is flat 4 pin

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

99 yukon slt 4x4

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

Yes, just installed it.

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

Nothing beyond, no way to check relay without going to parts store.

Submitted: 11 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 2 minutes by:
9/19/2017
GMC Mechanic: Amedee, GMC Technician replied 11 months ago
Amedee
Amedee, GMC Technician
Category: GMC
Satisfied Customers: 28,313
Experience: ASE Technician advanced level specialist
Verified

Hello and welcome!

My name isCustomerand I can assist you with your question.

Ask Your Own GMC Question
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

I am very sorry your having this issue with your vehicle.

I will try my best to answer all of your questions.

However, before we get started, please let me mention a few things.

1. If at any point you would like to speak on the phone, please feel free to request a phone call on your end and I can call you right away.

2. If you dont understand any technical terms or anything that I mention (component tests or theory or operation), please let me know and I will provide you with a more in debt explanation or answer.

3. Please understand that I am here to help.

Ask Your Own GMC Question
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

Have you checked for codes in the computer?

Are you looking for information to wire the fuel pump or connector?

Would you be willing to speak on the phone?

Ask Your Own GMC Question
Customer reply replied 11 months ago
not willing to speak on the phone for a charge.
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

OK

Ask Your Own GMC Question
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

We can continue here on this page.

Please let me know your exact question so I can provide you with the best possible answer right away.

Ask Your Own GMC Question
Customer reply replied 11 months ago
I can't pay anymore money and will not authorize it. I installed the pump, it's not making any noise and the gauge isn't moving, there is fuel in the tank.
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

Got it! Thank you for clearing that up.

Have you checked for power to the fuel pump?

Ask Your Own GMC Question
Customer reply replied 11 months ago
no vom, the pump I just took out did have power, battery was disconnected prior to any work done.
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

Ok, how do you plan on diagnosing this without a voltmeter?

Ask Your Own GMC Question
Customer reply replied 11 months ago
I wired purple to purple, gray to gray, is there a chance that the 2 black wires are not in the correct place? switched. would that yield the results I have. I got stranded about 50 miles from my tooling.
Customer reply replied 11 months ago
ground wire broken possibly?
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

YES sir it is possible the issue is a broken/faulty ground or the two black wires were switched.

Ask Your Own GMC Question
Customer reply replied 11 months ago
ground wire skinny or fat?
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

It is the same gauge or size (or just a bit bigger) than the fuel pump power wire.

Ask Your Own GMC Question
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

Do you have any further questions, sir?

Ask Your Own GMC Question
Customer reply replied 11 months ago
bad ground thanks a bunch
GMC Mechanic: Amedee, GMC Technician replied 11 months ago

Your welcome!!

I am glad I can help!

Please don't forget to honor your good faith deposit by rating my answer as "5 STARS or SMILEY FACES" for assisting you today.

Keep in mind, we can still continue this conversation at no further cost to you even after you rate my answer. Just reply back to me using this page and I will get it and get back to you ASAP!

I just ask that you allow time in between replies as I may be helping other customers or off line spending time with the family.

Also, if you are a member or if you have a subscription to the site, you still need to rate my answer in order for me to get credit for assisting you with your question.

You should see the rating system towards the top of the page.

Please let me know if you have any further questions.

Thanks and have a great day!!

Ask Your Own GMC Question
GMC Mechanic: Amedee, GMC Technician replied 10 months ago

Hello there!

I am just checking in to see how things are going and to see if you need any further assistance?

If so, please let me know as I will be happy to help.

Best Regards,

Customer/p>

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 Amedee Your Own Question
Amedee
Amedee
Amedee, GMC Technician
Category: GMC
Satisfied Customers: 28,313
28,313 Satisfied Customers
Experience: ASE Technician advanced level specialist

Amedee 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
My 1999 Denali has an intermittent starting problem that I
My 1999 Denali has an intermittent starting problem that I was trying to correct with the 30 minute anti-theft reset procedure but the telltale does not turn off after 10 or even 20 minutes...any sugg… read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
270 satisfied customers
Where do i get switched power to connect my plow joy stick
where do i get switched power to connect my plow joy stick in 2013 silverado 2500 hd wt snow plow prep pkg. … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
I just did the process here that instructs how to turn off
Hi, I just did the process here that instructs how to turn off the service autoride light on the dash. … read more
Marvin the Mechanic
Marvin the Mechanic
87 satisfied customers
Cam, I have an 04 yukon xl with a 5.3 non flex motor. The
Hey cam, I have an 04 yukon xl with a 5.3 non flex motor. The dash cluster harness has been cut behind the cluster. Is it possible to wire a new plug or does it have to be completely replaced?… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
On a '99 Sierra 1500 SLE, Extended Cab, 3- Door, Z-71, 4x4
On a '99 Sierra 1500 SLE, Extended Cab, 3- Door, Z-71, 4x4 with 6-Way front seats. The driver-side seat has given up the ghost. The power seat track is broken beyond repair, and the lower seat cushion… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
02 yukon slt 4wd 5.3 liter with auto ac front controls.
02 yukon slt 4wd 5.3 liter with auto ac front controls. front blower motor not working ac light and recirc light working… read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
279 satisfied customers
Need to know the pin/connector schematic 23464428 power
Need to know the pin/connector schematic for gm 23464428 power folding mirror. Need to know what all 17 (one is empty) connectors are used for with their colors and connector locations.… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
GM 1999: I am replacing the driver sun visor on my 1999 GMC
2:00pm...While I was waiting to answer me I went out with two flat blade jewelers screw drivers and pried the connection open without breaking it. i have the entire job done. the new mirrored visor is… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC C3500 HD Chas/Cab: Hi Scott, I have a 1998 GMC 3500HD 7.4
Hi Scott, I have a 1998 GMC 3500HD 7.4 gas engine. It has 2 tanks a 22 gall. Front and 20 gall. rear. the front tank sending unit plug is a square plug with a heavier gauge gray wire,black wire then s… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
I have an 2009 SLE Acadia, It didnt come with a backup camera.
I have an 2009 SLE Acadia, It didn't come with a backup camera. I bought a gm factory mirror, camera, and lift gate wire harness for an SLT that is used with a backup camera. I found the 4 wire connec… read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
GMC K3500 Sierra 4x4: I have a 97 GMC K3500 with a 454. The
I have a 97 GMC K3500 with a 454. The 4WD is intermittent. I replaced the front actuator and the problem persists. I cannot find a condition that exists that would cause the 4WD to be intermittent. Wh… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
GMC Acadia SLT: 2012 GMC Acadia SLT-1 VIN 2GCEC13T6961220081.
2012 GMC Acadia SLT-1 VIN 2GCEC13T6961220081. I want to install the factory hitch and 7 wire harness. I have found the following PN's. 20781543 Trailer Hitch, 11589273 Trailer hitch bolt. 12191503 Wir… read more
tripletauto
tripletauto
Shop Foreman
Associate Degree
140 satisfied customers
GMC C2500: C2500 rear running lights do not work HELP!!!!
C2500 rear running lights do not work HELP!!!! I need a color coded wiring diagram for the rear tail lights.… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
GMC Sonoma Pickup: I just replaced fuel pump in my 03 sonoma
I just replaced fuel pump in my 03 sonoma 4.3 2wd with a new delphi unit. my fuel gauge wont work , it reads empty with low fuel light on,also check engine light is on.… read more
MrDiag
MrDiag
Consultant
70 satisfied customers
GMC Yukon SLT: i have a mass air flow sensor code with an engine
i have a mass air flow sensor code with an engine light comming on. new plugs wires and airflow sensor. garage flushed injectores when vehicle had very little fuel in the tank. Symptoms are engine spu… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
GMC Yukon SLT: I INSTALLED A REARVIEW MIRROR FROM A 2012 CHEVY
I INSTALLED A REARVIEW MIRROR FROM A 2012 CHEVY TRAVERSE WITH A LCD BACKUP SCREEN BUILt IN FOR REAR BACKING UP. I ALSO BOUGHT A CAMERA REARVIEW ON EBAY WHICH IS FOR MY 2007 YUKON SLT. WHAT I NEED IS S… read more
Aran
Aran
Technician
Associate Degree
392 satisfied customers
GMC 2500 Denali HD: Where do I get switched power from to connect
Where do I get switched power from to connect Mobile Two-Way Radio? 2011 GMC Denali HD Duramax CrewCab 4X4 Short Box… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
Gmc Sierra 1500 Classic SLE: I would like to safely hard wire
I would like to safely hard wire a valenine1 radar detector to my new 2011 Sierra truck. I have the harness from valentine but I need the correct switched 12 volt source wire.… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 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