GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Topkick Gas 366 engine Gmc: Po I'm Andrew,I'm having trou…

Customer Question
Po Hi I'm Andrew,I'm having...
Po Hi I'm Andrew,I'm having trouble with my 1992Gmc topkick truck.fuel pump.injection.I hot wires from the fuses box to the fuel pump anits work the pump,but not the injection.fuels will not come thru the injection,help
Submitted: 3 years ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 2 days by:
7/9/2015
GMC Mechanic: TellNoL437, ASE Certified Technician replied 3 years ago
TellNoL437
TellNoL437, ASE Certified Technician
Category: GMC
Satisfied Customers: 3,857
Experience: ASE Certified Medium/Heavy Duty Technician, Hydraulics, Electrical, Brakes Certified
Verified
My name is ***** ***** I will try to assist you. When you turn the key on, do you hear the lift pump? Do you have power at the pump with key on? __________________________________________________________________________________________________________________________You want a 5 star service and I want to provide a 5 star service. Please consider that I don't know your skill level as well as I can't see,touch, smell, hear, or taste the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back.The system DOES NOT automatically give me credit from your deposit. A rating is REQUIRED. You are rating me for the information I provide,not the website. I have no control over the site fees, site errors, category errors, or how long it took for a response for these reasons.I am not an employee of this website, so please rate with a POSITIVE (green) rating for me to get credit for assisting you. You still paythe website for negatives or by not rating at all. I just get nothing from that payment you made. So please rate each answer I provide.I want you pleased with my service to you so please inform me before rating negative (red) and I will do my best to make it right. Followups for same question are always free after ratings have been made.I do have many workshop manuals, diagrams, etc that I pay to get access to out of my pocket. If one is needed, please ask and I will giveyou an offer at my technician discounted cost to you for such manuals. I never charge above that cost.Thank you for allowing me to assist you through Just Answer!Jeremy
Ask Your Own GMC Question
Customer reply replied 3 years ago
Hi Jeremy : Andrew" yes I have power now to the fuel ⛽ pump.i have fuels to the injection,but nno fuel come thru the injection,while I been waiting for a day or so far a response,I been trouble shooting mores,unfortunately I check to see if power was @ the injection? Yes powers @ the injection.finally ' I touch the wires in accidently to gound to the bold an 1injection sprayed fuel ⛽,not both( 2).what's wrong?
GMC Mechanic: TellNoL437, ASE Certified Technician replied 3 years ago
Unfortunately I don't know too much on the engine side of this vehicle, but I do know on the chassis side. I will opt out and see if I can get this dual categorized for a GMC engine tech to assist. Hopefully someone over there can give you something to look at for engine troubleshooting. Thanks.
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 Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1,814
1,814 Satisfied Customers
Experience: GM Grand Master Technician 2007. 14 year experience.

Gm Tech (Cam) 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

1,814 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
I have a 5.7 g2500 vandura I have added a new pump new carb
hello I have a 5.7 g2500 vandura I have added a new pump new carb I have checked the fuse ok I put in a new pump relay new oil sensor I have tried hot wiring the pump it comes on so it does work I don… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
I hava 94 gmc g2500 vandura my fuel pump is nd so is my carb
I hava 94 gmc g2500 vandura my fuel pump is nd so is my carb but is not pumping nor does my carbs injectors I have changed the pump fuse nd the pump rely plus the oil sensor… read more
tim37857
tim37857
Mechanic
High School or GED
71 satisfied customers
1990 gmc sierra 1500 5.7L fuel pump not working i need a
1990 gmc sierra 1500 5.7L fuel pump not working i need a wiring schematic of the entire fuel system to rewire it someone cut the wiring… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Is a GMC 3500 HD when warmed up dont start, i went from fuel
is a GMC 3500 HD when warmed up dont start, i went from fuel pump to injectors and everything is fine … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
270 satisfied customers
I want to know we're to check for power there isn't any at
I want to know we're to check for power there isn't any at the pump or relay we're does it begin ?… read more
camerontech
camerontech
20 year experience diagnostic technician
class a
673 satisfied customers
Ivan so I have a 04 gmc Seirra. The diagnostic port has
Hello Ivan so I have a 04 gmc Seirra. The diagnostic port has power but my meter is not turning on. About a year ago I stuck a USB power adapter in my cigarette lighter port and something went wrong a… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,058 satisfied customers
FUEL PUMP RELAY HAS NO POWER AT FUSE BOX, WAS RUNNING AND
WAS RUNNING AND DIED, WOULDNT START HAD NO FUEL PRESSURE AND NO POWER TO FUEL PUMP, REPLACED RELAY NO HELP TESTED POWER ACROSS WHERE WOULD PUT JUMPER TO REPLACE RELAY HAS NO POWER AT PINS IN FUSE BOX FOR RELAY … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
Well...want a tough one? 2002 Astro, we swapped engines and
well...want a tough one? 2002 Astro, we swapped engines and now get a no crank/no spark when we turn the key. … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
I have used you guys before and did well. I have a 2004 GMC
I have used you guys before and did well. I have a 2004 GMC C5500 TOPKICK 6.6L Motor 5C042. This truck uses a electric fuel pump to transfer fuel from the rear tank to the front. I have no hot line ru… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
2003 GMC Envoy SLT no fuel going thru lines rush judgement
2003 GMC Envoy SLT no fuel going thru lines rush judgement replaced pump now finds out no power at the fuel pump check fuses didn't see any blown what or where should I try next… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC 1500 (5.7 engine Sierra: I have a 1992 GMC Sierra Truck..My
I have a 1992 GMC Sierra Truck..My fuel pump went out..So I thought..Come to find out that there is no power to the fuel pump..( At the fuel tank )All my fuses look good..There are four wires total on… read more
Clayso
Clayso
Shop Owner Master Technician
ASE Master Certified Automobile Technician
879 satisfied customers
Gmc sierra 2500 6.5: 95 sierra 6.5 k2500...struggles up hills,
95 sierra 6.5 k2500...struggles up hills, rpms drop and start bouncing if u try to press pedal to maintain speed. If u hold pedal steady, it will smoothly decelerate up hill but reduce to 10 mph. Have… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,814 satisfied customers
GMC: I have a 2000 Chev S10 pickup with the 2.2L 4 cyl. The
I have a 2000 Chev S10 pickup with the 2.2L 4 cyl. The service engine light came on so I hooked up the code reader and it spit out a PO141 trouble code. So I replaced both 02 sensors just to be safe. … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
GMC 3500 HD: 2000 GMC 3500 HD fuel injection Changing vehicle
2000 GMC 3500 HD fuel injection Changing vehicle back to gasoline from propane. Removed propane harness and reconnected original fuel system wires back together. Fuel pump comes on for a moment but st… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GM topkick: I have a 94 GMC topkick with a 6.0l in itand it
I have a 94 GMC topkick with a 6.0l in itand it was run it out of fuel. Cant get it stated again. There is 12.6 volts at the fuse but there is only 1.7 volts coming off the blue wire on drivers side t… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
GMC C3500 Sierra 4x2: Im back online with the same problem.
I'm back online with the same problem. My 1996 GMC 1 ton 6.5 deisel is dieing never know when, just like you turn the key off. Things we have done to it so far. 1. replaced the fuel pump, 2. replaced … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,814 satisfied customers
GMC Sierra 2500 HD Classic SLE: On my 2003 HD 3/4 ton Diesel.
On my 2003 HD 3/4 ton Diesel. I have 7 wires to the trailer conector, but the Batt Feed wire is not hot. I don't know which fuse or if that circuit is hot from the factory. Can you help?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,814 satisfied customers
GMC Yukon SLT: TODAY MY 2003 GMC YUKONS DRIVER SIDE POWER SEAT
TODAY MY 2003 GMC YUKONS DRIVER SIDE POWER SEAT QUIT OPERATING ALONG WITH THE HEATED SEATS ON BOTH THE DRIVER AND PASSENGER SIDE. SEE NOTHING ELSE WRONG OTHER THAN THAT ANY IDEAS? MAYBE A FUSE?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,814 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