GM

GM Repair Problems? Ask GM Repair Expert Now.

Ask an Expert,
Get an Answer ASAP!

GM

2007 H3 not starting when hot after running. Starts fine

Customer Question
2007 H3 not starting when...
2007 H3 not starting when hot after running. Starts fine when cold. Security light not flasing. When hot, will have to cycle the ingintion at least 3 times before it will start
JA: Does the light flash, blink or stay solid? Have you tried to reset the security system?
Customer: When turning the ignition on, light is solid and will go out immediatley when the engine starts.
JA: Are you fixing your H3 yourself? What have you tried so far?
Customer: Just starting to try to diagnose the issue. Yes myself. Swapped relays, no change. Checked fule pressure, ok. Have read blogs on the securrity system issue and dont think that is the issue from what I have read thus far. Number 1 coil was bad, replaced that.
JA: Anything else you want the mechanic to know before I connect you?
Customer: not that i can think of
Submitted: 1 year ago.Category: GM
Show More
Show Less
Ask Your Own GM Question
Answered in 22 minutes by:
11/17/2016
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago
david craig
david craig, ASE Certified Technician
Category: GM
Satisfied Customers: 4,032
Experience: owner/mechanic at 3D Automotive
Verified

Hi Im David, next time it doesnt start for you look to see if you are getting rpms while trying to start it.

Ask Your Own GM Question
Customer reply replied 1 year ago
Ok will check tonight
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok

Ask Your Own GM Question
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

any update?

Ask Your Own GM Question
Customer reply replied 1 year ago
Ok starting from cold engine. Key in, turn to on, turn to start and cranks briefly and starts up. No RPM on tack till started. Ran until up to operating temp. Shut off engine. Removed key and left sitting for 15 minutes.
Went back out. Insert key, turn ignition on, try to start. Cranks but no start. No RPM showing on tack. Try to start again. No go. Try 3rd time and started after cranking extended time.
When it starts it's like the ignition or injectors come to life all the sudden.
Security light never flashes and goes out immediately after start up.
It seams to revolve around engine temperature. Something sending an incorrect signal once hot.?
No check engine lights and no codes.
I have checked fuel pressure. No pressure with key on. Pressure only when started and running. Approx 60 with fluctuation as the injectors fire but only a few pounds.
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

crank sensor, crank sensor signal or wiring to crank sensor

Ask Your Own GM Question
Customer reply replied 1 year ago
Crankshaft position sensor? Ok will look into and give a try. Any other possibilities?
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

one step at a time my friend

Ask Your Own GM Question
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

any update?

Ask Your Own GM Question
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

do you still need assistance??????

Ask Your Own GM Question
Customer reply replied 1 year ago
Replaced crank sensor. No change. Starts right up with cold. When hot have to hit starter 3 times before it will start. Something to do with temp.
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

I just re read some of the posts, you stated no fuel pressure with key on?

Ask Your Own GM Question
Customer reply replied 1 year ago
Correct. No fuel pressure when key on
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok we need to pull the fuel pump relay and check some voltages.

Ask Your Own GM Question
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

what engine is in that ?

Ask Your Own GM Question
GM Mechanic: david craig, ASE Certified Technician replied 1 year ago

do you just want to do this tomorrow?

Ask Your Own GM Question
GM Mechanic: tim's auto repair, mechanic replied 1 year ago
tim's auto repair
Category: GM
Satisfied Customers: 16,087
Experience: owns a repair shop....25 years
Verified

Hi, My name is ***** ***** for the delay.

I will do my best to assist you

do you get any codes?

Ask Your Own GM Question
Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5,792
5,792 Satisfied Customers
Experience: GM Grand Master Technician 2007. 14 years 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:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

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

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

GMC Mechanic

5,792 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

GMC Technician

1,523 satisfied customers

15 years gm master tech/15 years ASE master tech

car tech

car tech

ASE Certified Technician

449 satisfied customers

25 year master tech and shop owner

Chris (aka- Moose)

Chris (aka- Moose)

GMC Technician

203 satisfied customers

16 years of experience

Paul M ASE Master

Paul M ASE Master

ASE Master Tech

187 satisfied customers

ASE Master Tech 20+ Years

Anthony

Anthony

GMC Technician

489 satisfied customers

GM Certified

Amedee

Amedee

GMC Technician

451 satisfied customers

ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector

< Previous | Next >

Related GM Questions
Exhaust fluid system see owners manual now. 39,000 klm 2016
39,000 klm 2016 Sierra. Stopped and filled DEF but still have same message. … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
I have a 1998 C1500 with automatic, 2 wheel drive. My son
I have a 1998 C1500 with automatic,***** My son borrowed the truck and said he broke the shift lever when he put it in park. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
SALUDOS. 2013. CODE U0101-00. I put the keys to another car
I put the keys to another car misplaced and I have a problem with the trasmission … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
2014 GMC the temperature gage down to 160 and when engine is
2014 GMC the temperature gage down to 160 and when engine is turned off the fan keeps running for awhile? … read more
GM Bob
GM Bob
Automobile Technician
High School or GED
989 satisfied customers
My 2011 SLT2 Acadia driver seat will not go forward or back.
my 2011 SLT2 Acadia driver seat will not go forward or back. Up and down is fine. My wife is short and cannot drive it as is. HELP. … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
I put 2 gallons of diesel by mistake. From a gas can. 2007
I put 2 gallons of diesel by mistake JA: How old is the engine? And when was it last serviced? Customer: From a gas can JA: What is the model/year of your GM? Customer: 2007 envoy JA: Are you fixing y… read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,523 satisfied customers
I've replaced my autoride suspension on my 07 Tahoe with
I've replaced my autoride suspension on my 07 Tahoe with conventional shocks and 5" lift. Id the recommended resistors (4) 1 at each shock and the service suspension light stays on … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
ABS and Brake Light on. Both. With ABS codes B2610, U1000,
With ABS codes B2610, U1000, U1096, U1161 2005 Chevy Tahoe 5.3L … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I just got a 2003 H2 at an auction and wont shift gears
I just got a 2003 H2 at an auction and wont shift gears after 40mph and service 4wd light is on, vehicle has 129k miles, what should I check for? … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
Low beams will not come on. 2007 GMC Envoy. Checked lamps,
yes - checked lamps, fuses. Both OK. High beams will only come on in manual, not with flicker. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Where is the day time running light module? Well my low beam
Well my low beam and running lights aren't working and there's no power at the fuse. It's an 04 envoy … read more
Mechanic01
Mechanic01
1,160 satisfied customers
Will the 20” rims of my previous owned 2011 Yukon Denali fit
Will the 20” rims of my previous owned 2011 Yukon Denali fit my 2015 Sierra Denali 1500 series… read more
Expert
Expert
13 satisfied customers
I have a 2007 Hummer H2 w a swing out spare tire mount. I
I have a 2007 Hummer H2 w a swing out spare tire mount. I would like to remove it. 1) is the removal of the swing arm simply an un-bolt or will I have to buy replacement parts. 2) I want to replace th… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
97 1500 5.7 Installed new fuel pump, Have 55psi at the rail,
97 1500 5.7 Installed new fuel pump, Have 55psi at the rail, only runs on either. What could have happened?… read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Left rear cab is filling with water seem like the drain tube
left rear cab is filling with water seem like the drain tube is to short. shouild the drain tube exit through the in bottom of cab corner? … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
We have a 1997 GMC Sierra 4x4 we bought new and has 150,000
We have a 1997 GMC Sierra 4x4 we bought new and has 150,000 on it. The transmission torque converter was rebuilt at 49,600 miles. The problem is that when we put a stop Is that when we put a strain on… read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,523 satisfied customers
Having trouble with chevy cobalt 2006, coolant temp on gage
having trouble with chevy cobalt 2006, coolant temp on gage in car reads 252F when I disconnect the coolant sensor the temperature drops to 232F, checked sensor with meter and tests ok, cooling fan ru… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,900 satisfied customers
I have a 2007 Chevy Tahoe. I set the parking brake and I
I have a 2007 Chevy Tahoe. I set the parking brake and I can't get it to release back up. The Tahoe won't move.… read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 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