GMC

GMC Troubleshooting Questions? Ask a Mechanic for Answers

Ask an Expert,
Get an Answer ASAP!

GMC

Well my truck sputters real bad when I give it gas

Customer Question
moderately. Also when going down...
Well my truck sputters real bad when I give it gas moderately. Also when going down hill I let off the gas and it feels like it going to stall out. In the mornings not so bad but when afternoon gets around it worsens. I have changed the spark plugs and wires and changed both knock sensors and knock sensor wiring harness. I also changed the intake gasket also. One thing I did notice was when I took my throttle body off it sounded like there was marble inside of it when I would tilt it from one end to the other. Is that normal. I also cleaned MAF sensor and throttle body.
JA: Does the engine stall right after starting? And what about hesitation or jerking during acceleration?
Customer: Not right after starting. It does idle a little rough though. Yes on the jerking but only at usually round 40 mph and higher.
JA: What is the model/year of your GM?
Customer: 2003 gmc sierra 1500 z71
JA: Are you fixing your Sierra 1500 yourself? What have you tried so far?
Customer: Yes. Replaced knock sensors and wiring harness. New spark plugs and wires. I bought a chillton repair Manuel and it says to gap spark plugs at .060, but then I read it was suppose to be .040. Cleaned throttle body and MAf
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 1 year ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 19 minutes by:
9/2/2016
GMC Mechanic: Cary York,
 replied 1 year ago
Cary York
Category: GMC
Satisfied Customers: 217
Experience: Auto Tech at Certified Auto Repair
Verified

Hi, I’m Cary and I’ll be helping you today.
Please understand that I can't smell, hear, or touch the vehicle, so patience is appreciated. Before leaving the site make sure and leave me a rating. You can still reply to me as many times as needed, even after the rating..

Is the check engine light on?

Ask Your Own GMC Question
Customer reply replied 1 year ago
No
Customer reply replied 1 year ago
Oh the abs light was on but I also changed the o2 sensor on drivers side before the cat. Conveter
Customer reply replied 1 year ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
GMC Mechanic: Cary York,
 replied 1 year ago

Sorry did not mean to opt out.

I would love to help but its difficult to describe through messages. I will send a request for a phone call. Its not just one call. Once you accept the call we can hang up and call back as much as we need to.

Ask Your Own GMC Question
Customer reply replied 1 year ago
I'm at work still and am kinda buisy but can check my text
GMC Mechanic: Amedee, GMC Technician replied 1 year ago
Amedee
Amedee, GMC Technician
Category: GMC
Satisfied Customers: 27,106
Experience: ASE Technician advanced level specialist
Verified

Hello and welcome! Different tech here. Did you still need help? Would you be willing to speak on the phone?

Ask Your Own GMC Question
Customer reply replied 1 year ago
No, so I just payed my money and didn't even get a answer. WTF?
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

Ok no problem.

Ask Your Own GMC Question
Customer reply replied 1 year ago
that's it ? Did you get to read what I had told the other mechanic
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

yes

Ask Your Own GMC Question
Customer reply replied 1 year ago
Well do you have any ideas
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

Are there any codes in the computer?

Ask Your Own GMC Question
Customer reply replied 1 year ago
Just 02 sensor on bank 1and 2 upstream. I already changed upstream on drivers side and it still shows a cde
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

Is it a lean code? Can I get the code?

Ask Your Own GMC Question
Customer reply replied 1 year ago
Po300
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

And what about the o2 sensor code?

Ask Your Own GMC Question
Customer reply replied 1 year ago
I can't think of the o2 codes right off hand. They are p02 something
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

I need that code number and your VIN number please

Ask Your Own GMC Question
Customer reply replied 1 year ago
Ok as soon as I can get them I'll send them. I'm still at work
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

Sounds good!

Ask Your Own GMC Question
Customer reply replied 1 year ago
I'm sorry it slipped my mind. The code reader was a Bosch and it read codes in different compartments like engine,transmission, oxygen sensor So there wasn't no code it just told me. My vin is 2GTEK19T131368117
Customer reply replied 1 year ago
Well this makes the 3rd mechanic I will have spoken to in the last 2 hours. And still no answer
GMC Mechanic: Amedee, GMC Technician replied 1 year ago

I am pretty confident that you are not going to be happy no matter how much information I give you or how hard I try. I dont think I can help you either. I am very sorry and you can process a refund on your end. Good luck!

Ask Your Own GMC Question
Ask Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1,705
1,705 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

1,705 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,557 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

583 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

259 satisfied customers

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

George H.

George H.

ASE MasterTechnician

227 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

218 satisfied customers

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

< Previous | Next >

Related GMC Questions
The abs light and parking brake light came on today and it
good morning the abs light and parking brake light came on today and it won't go off, brakes seem to be fine … read more
Mechanic01
Mechanic01
1,716 satisfied customers
Check engine light comes on 2009 Acadia 84000 moles, checked
check engine light comes on 2009 Acadia 84000 moles, checked gas cap … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I changed my abs modgule on a 1999 gmc savana 2500 while I
I changed my abs modgule on a 1999 gmc savana 2500 while I was installing it the marks on my lines were ruined I just did the best I could but I would like to be sure presumming that they are right th… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Check engine light is on. Message: engine reduced power
check engine light is on. Message : engine reduced power loss, gmc Yukon denali 2007 … read more
Ron Z.
Ron Z.
- GMC Tech -
Vocational, Technical or Trade Scho
259 satisfied customers
ABS, Traction Control lights are on all the time as soon as
ABS, Traction Control lights are on all the time as soon as you turn the key on … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,420 satisfied customers
Change right front abs sensor still got co040 code. Are you
change right front abs sensor still got co040 code … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
I got a 2003 Kodiak 4500 and the abs light is on and the ip
I got a 2003 Kodiak 4500 and the abs light is on and the ip brake light is on. I hook up my scan tool but I cant communicate with abs.… read more
roy
roy
Associate Degree
3 satisfied customers
I have a 2001 Yukon SLE with 5.3L. The ABS light used to
I have a 2001 Yukon SLE with 5.3L. The ABS light used to intermittently come on and it would throw a C0265 code. Meaning that ABS would work some times and not others. Different every time you started… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,557 satisfied customers
My ABS light & 4WD light comes on and fan motor shuts off
My ABS light & 4WD light comes on and fan motor shuts off intermittently. By tilting steering wheel it will correct problem. Any Ideas? … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
583 satisfied customers
Stabilitrak service light and abs light both on, service
nothing so far- just started looking- it has only come on one time before and stopped- this time didn't want to go into gear but then did and is working fine- lights still on though … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
Abs code c0110 2005 gmc c5500 8.1L already changed ebcm and
abs code c0110 2005 gmc c5500 8.1L already changed ebcm and hyrdaulic assis pump code still comes back. please dont send me general gm abs diag procedure, i did all the prelim tests before i changed p… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
1,705 satisfied customers
The ABS and Traction Control started coming on today they go
The ABS and Traction Control started coming on today they go off and on. I own a 2005 GMC Yukon. … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
The abs and ted brake light is on. Both. 2005 yukon. Ive
The abs and ted brake light is on JA: Is it just the ABS light? Or is the brake system warning light on, too? Customer: Both JA: What is the model/year of your GMC? Customer: 2005 yukon JA: Are you fi… read more
roy
roy
Associate Degree
3 satisfied customers
06 GMC Sierra 2500 HD Duramax. Rear ABS coming on just as
06 GMC Sierra 2500 HD Duramax. Rear ABS coming on just as vehicle is rolling to a stop. Harsh 2-1 downshift occurs at same time. No lights on dash. ????… read more
Anthony Uzmack
Anthony Uzmack
ASE Certified Service Technician
Automotive Technology
38 satisfied customers
Replace o2 sensor reset engine lite, lite went off. Lite
replace o2 sensor reset engine lite, lite went off. Lite came back on again, reset lite again, afther you stop and start again engine lite comes on. It,s been 4 days now drove for over 250 miles and e… read more
roy
roy
Associate Degree
3 satisfied customers
2003 Yukon 4wd 5.3. Check engine light on. Abs light on.
2003 Yukon 4wd 5.3. Check engine light on. Abs light on. Service brake system message. Intermittent service 4wd message. Trans wont shift past 2nd… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
293 satisfied customers
I have gmc sierra 2014 5.3, i have problem with o2 sensors i
I have gmc sierra 2014 5.3 , i have problem with o2 sensors i have changed them all but still the car getting lean while in idel but when i drive its fine and the AFR GOSE TO 18 !!!… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
583 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
4,420 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