GMC

GMC Troubleshooting Questions? Ask a Mechanic for Answers

Ask an Expert,
Get an Answer ASAP!

GMC

Traction control light on reduced engine power, No i was

Customer Question
Traction control light on reduced...
Traction control light on reduced engine power
JA: Do you know the code? Did you check the fuses?
Customer: No i was just driving home and power reduced and engine and traction control light came on just happened ten minutes ago no stores open
JA: What is the model/year of your GMC?
Customer: 2005 yukon
JA: Are you fixing your Yukon yourself? What have you tried so far?
Customer: Nothing i just got it home didnt know where to start
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 2 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 2 minutes by:
9/20/2017
GMC Mechanic: xsvectOR, ASE Certified Technician replied 2 months ago
xsvectOR
xsvectOR, ASE Certified Technician
Category: GMC
Satisfied Customers: 16,611
Experience: car expert!
Verified

do you have a scan tool?

Ask Your Own GMC Question
Customer reply replied 2 months ago
No
GMC Mechanic: xsvectOR, ASE Certified Technician replied 2 months ago

The check engine light or reduced power or traction light comes on when the on-board computer detects a fault in engine driveability or performance, transmission control system or transmission, or the emissions system, and a fault code is set and stored in the computer. Faults that can set the check engine light can range from a vaccuum leak, engine mis-fire, low engine compression, faulty sensor such as O2 sensor or other engine sensor, hydraulic pressure loss in transmission, transmission shift solenoid, open/short in wiring harness, emission evaporative system leak, or one of over a hundred different reasons.
The only way to know what set a fault code and turned the check engine light on is to have a diagnostic scanner hooked up to the on-board computer and read it for stored diagnostic fault codes. Many auto parts stores will do this service for free- (like auto zone)check with you local parts stores. If none in your area do, then you will have to take it to a shop and pay to have the computer read for stored fault codes.

Without knowing the fault codes numbers, it would be irresponsible to guess as to the cause as there are hundreds of possible causes

if you provide me a diagnostic code we can narrow down the cause of failure

Ask Your Own GMC Question
Customer reply replied 2 months ago
Ok
GMC Mechanic: xsvectOR, ASE Certified Technician replied 2 months ago

Hope you can rate my service 5 star

Ask Your Own GMC Question
GMC Mechanic: xsvectOR, ASE Certified Technician replied 2 months ago

Please let me know if you need anything else on it, just reply back and we will continue
If you are good, Please Kindly Rate Me.
A 5 Star Rating is muPlease let me know if you need anything else on it, just reply back and we will continue
If you are good, Please Kindly Rate Me.
A 5 Star Rating is much Appreciated
If you feel I have noPlease let me know if you need anything else on it, just reply back and we will continue
If you are good, Please Kindly Rate Me.
A 5 Star Rating is much Appreciated
If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,You can always ask me again or I can opt out of your question & open it for another expert ,that will provide you with more or better assistance on this issue
Please keep in mind thaPlease let me know if you need anything else on it, just reply back and we will continue
If you are good, Please Kindly Rate Me.
A 5 Star Rating is much Appreciated
If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,You can always ask me again or I can opt out of your question & open it for another expert ,that will provide you with more or better assistance on this issue
Please keep in mind that when you rate me , it does not end our conversation.
you can always come back to this conversation and ask me any follow up question you may have on this issue
(you can copy this link page & paste it in your browser when ready and it will open up our conversation again)
Thank You
John S

Ask Your Own GMC Question
Ask xsvectOR Your Own Question
xsvectOR
xsvectOR
xsvectOR, ASE Certified Technician
Category: GMC
Satisfied Customers: 16,611
16,611 Satisfied Customers
Experience: car expert!

xsvectOR 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

1,696 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,552 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

576 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

226 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
2004 GMC ENvoy. Check engine light comes on periodically,
Thanks, ***** ***** ENvoy. Check engine light comes on periodically, cruise control doesn't work and the MPG gauge goes crazy when service engine light is on … read more
Mechanic01
Mechanic01
1,314 satisfied customers
HOW CAN YOU TELL IF A DIESEL LML ENGINE IS FROZEN. WE TRYED
YES WE TRYED TURNING THE CRANKSHAFT AND IT WONT TURN … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
576 satisfied customers
How do I get the "change engine oil" light to stop coming on
How do I get the "change engine oil" light to stop coming on after I've just changed the oil in my 2001 GMC Yukon? … read more
George H.
George H.
ASE MasterTechnician
Associate Degree
226 satisfied customers
Battery saver light came on. Battery test with the engine
Battery saver light came on. Battery test with the engine off at 12.7 VDC, With the engine running at an idle 15.7 VDC. Trying to locate the issue … read more
Mechanic01
Mechanic01
1,314 satisfied customers
Jasper engine, no codes, loss of power...sounds like
jasper engine , no codes , loss of power...sounds like ignition timing...Hmmm … read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
576 satisfied customers
06 envoy cranks but no start engine light is on and stays on
06 envoy cranks but no start engine light is on and stays on solid no security lights and fuel pump is on when key is turned to start cranclk speed … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
18,417 satisfied customers
Truck will not remote start and check engine light on.
Truck will not remote start and check engine light on. Advance Diagoned: Getting code P0674 GP cyl 4 issue, U0101 TCCM no comm, and code C0550 … read more
Peter Zavarelli
Peter Zavarelli
General auto certifications
198 satisfied customers
With the engine running an turn the headlight switch on the
with the engine running an turn the headlight switch on the engine goes into reduced power mode. If you pull the dimmer the engine dies. … read more
Roy
Roy
shop foreman
Associate Degree
3,844 satisfied customers
Creplacet the engine and the instrument cluster does not
creplacet the engine and the instrument cluster does not operate at all now … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
18,417 satisfied customers
Traction control light on reduced engine power, No i was
No i was just driving home and power reduced and engine and traction control light came on just happened ten minutes ago no stores open … read more
xsvectOR
xsvectOR
ASE Certified Technician
16,611 satisfied customers
On the 2012 gmc sierra 1500 the engine harness ends with the
on the 2012 gmc sierra 1500 the engine harness ends with the ecm/pcm, fuse block, throttle control module transmission module what are other two connection ends for… read more
Marvin the Mechanic
Marvin the Mechanic
82 satisfied customers
Aveo 2009: replaced engine. Engine starts but shuts off with
Aveo 2009: replaced engine. Engine starts but shuts off with in 2 or 3 seconds. Any suggestions … read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
4,621 satisfied customers
The reduced engine power symbol is on but with no arrow.
The reduced engine power symbol is on but with no arrow. Have not experienced any change in engine performance since I noticed it today. What does this usually indicate? … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
158 satisfied customers
2006 gmc evnoy check engine light on, stay on, sle, its just
2006 gmc evnoy check engine light on JA: Does the light stay on, or does it blink? Customer: stay on JA: What is the model of your '06 GMC? Customer: sle JA: Are you fixing your vehicle yourself? What… read more
Eric
Eric
Retired
N/A
31,107 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
shop foreman
Associate Degree
3,844 satisfied customers
I had my check engine light read and they told me it was my
I had my check engine light read and they told me it was my o2 downstream censor. I replaced it but light it still on. Its an 06 pt cruiser.… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,116 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
576 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
4,095 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