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2005 Chev Avalanche continues cranking after letting go of key
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avalanavig
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Jan 20, 2011, 8:05 PM
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2005 Chev Avalanche continues cranking after letting go of key
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I have a 2005 Chevrolet Avalanche with the 5.3 V-8.
When one goes to start the engine it sometimes continues cranking after the engine starts and you let go of the key . Sometimes it only does it momentarily; sometimes you have to manually bring the key back so it stops cranking. I have gotten several opinions. Some say ignition switch in the steering column; others say starter/solenoid; others say electrical problem such as a relay.
I replaced the starter relay but that did not fix the problem.
One problem in regard to repair is it only does it sporadically and it never does it when I take it to the shop.
Anyone have an idea what the problem is ? Thanks in advance for any help on this.
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Bojames
User
Jan 21, 2011, 12:09 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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I doubt seriously that your problem is in the starter......
Does you vehicle have a tilt column? If so try moving it into different settings and see if the problem persist.
I also doubt that it is the Ignition switch in the column. When you turn the key, the switch pushes a rod
down throught the steering column that actually engages an electrical switch that mounts on top of the column (under the dash). You might check to see if something is binding the rod.
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avalanavig
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Jan 21, 2011, 12:36 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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Bojames: thanks for the reply. I will change the tilt position of the column to see if that helps. I went to the Chevy dealer and described the problem to the the service rep who told me it was the fuel pump. Is that possible?
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Bojames
User
Jan 21, 2011, 12:44 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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Caleb,
Not sure about the "fuel pump" thing...Who knows with the computerized cars.
I'm an "old school" mechanic so my expertise (if I have any) are in practical solutions.
Since the invention of catalitic converters, computers, and "little black boxes" my "shade tree" days have been over.
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avalanavig
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Jan 27, 2011, 8:30 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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Bojames:
Hey, I think it was the tilt. The sterring column was tilted all the way down. I tilted it up a bit and it hasn't done it since. Strange. Thanks for the suggestion.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 28, 2011, 8:47 AM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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It may come back. Near sure the spring to return to plain "run" is in the key switch itself. Maybe - lock de-icer would help if available to you but read the packaging that it has some safe lube for an ignition lock as it's mostly used for doors,
T
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Trevman243
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Jan 31, 2011, 1:14 AM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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I just worked on one that flat out wouldnt crank, theres a fuse that blows that messes with the whole ignition process, cant remember which one but its also a sign that your fuel pump is about done so be prepared for that
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Tom Greenleaf
Ultimate Carjunky
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Jan 31, 2011, 5:10 AM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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I respectively disagree Trevman that the fuel pump has anything to do with an engine cranking by starter motor. Engine would crank if the whole gas tank was out with its fuel pump. Do vehicles have lots of fuel pump and pressure issues - yes and many are GMs. It would take some funky crossed wires somewhere to have fuel pump power keep a "trigger" wire live at the starter IMO,
T
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Hammer Time
Ultimate Carjunky
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Jan 31, 2011, 5:56 AM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Trevman243
Novice
Feb 1, 2011, 3:08 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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Sorry that was my bad, didn't have my glasses on when i saw the question and thanks for the diagram Hammer i was looking for one of those
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avalanavig
Novice
Mar 15, 2011, 2:00 PM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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No one anywhere was able to tell me what the cause of the problem is, so I decided to try a new starter and solenoid in the hope that would solve the problem. I went to Advance auto parts and got the starter in my hands. While reading the literature (before buying) I found a flyer which said as follows:
""GHOST START" Starter Cranks After Key Is Released On Cold Start
Chevrolet Silverado, Suburban, Tahoe .... with 4.8L, 5.3L ....Gas Engine
Condition: Owners of these vehicles may comment that the engine starter will continue to run after key is released. This is a normal condition and no repairs should be attempted ...." Ha!!
What can one say when the fact is that either no repair facility that I took the vehicle to knew about this condition; or they didn't tell me about it in order to sell me something I didn't need. The local Maroone Chevrolet dealer service manager told me that I needed a new fuel pump. How can anyone trust any auto repair business?
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Hammer Time
Ultimate Carjunky
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Mar 15, 2011, 2:15 PM
Post #12 of 14
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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And yet you come to us for free advice....................
Maybe no one you talked to had the opportunity to read that factory Technical Service Bulletin recently and wasn't aware. Obviously the starter company was getting numerous warranty returns that caused them to look into the problem and find the bulletin. In the future, don't be so quick to condemn everyone in the business. We take that personally.
PS, If you read this bulletin, you will see that one of the reasons for a long crank like that is the fuel pump not building up pressure quickly enough so in that case, you may actually need a fuel pump. The bulletin says your starting system needs no repairs but I do believe you need a fuel pump.
Here is the TSB in full.
Bulletin No.: 03-06-03-001D
Date: August 02, 2007
INFORMATION Subject:
Starter Cranks After key Is Released (Normal Condition) Models:
2003-2008 Passenger Cars and Trucks (Including Saturn)
2003-2008 HUMMER H2, H3
2005-2008 Saab 9-7X Attention: This bulletin ONLY applies to vehicles with PCM/ECM controlled starters.
Supercede:
This bulletin is being revised to update the models and model years. Please discard Corporate Bulletin Number 03-06-03-001C (Section 06 - Engine/Propulsion System).
Some customers may comment that the engine starter will continue to run after the key is released.
For the 2003 through 2008 model years, the Powertrain Control Module (PCM) or Engine Control Module (ECM) controls the starter relay based on input from the key switch. When the ignition switch is held in the start position for 0.4 seconds, the PCM/ECM start timer is activated. Once the start timer is activated, the PCM/ECM will continue to crank the starter until either the engine starts or a no start time limit is reached.
Occasionally, the fuel pump module will take one or two seconds to build fuel pressure. Often this will occur after the vehicle sits overnight. During some vehicle starts, the customer may release the ignition switch, key before the engine actually starts. When this occurs, the engine will then continue to crank until the engine starts or the no start time limit is reached.
This is a normal condition and no repairs should be attempted for this condition.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Mar 15, 2011, 2:23 PM)
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avalanavig
Novice
Mar 16, 2011, 9:14 AM
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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Hammer Time: Thanks for taking the time to provide a detailed response. If you read my last post carefully you will see that I am not critical of the free information I received from the forums. I understand that all the free info has to be "taken with a grain of salt" as it were. I was being critical of the actual repair facilities that I took the vehicle to here in the city where I live. They all wanted to sell me a computer analysis.
An honest competent repair facility would have provided me with the information in the bulletin at the time they offer a computer analysis. The places I took the vehicle to were either dishonest or incompetent. There is no other conclusion. It is unfortunate that you take it personally. Just because the places I took it to were dishonest or incompetent does not mean every repair facility is dishonest or incompetent, but I am concerned that the places I took it to may be representative of the entire auto repair industry.
Hypothetical: The service manager knew about the bulletin. But times are tough; have to bring in business/raise revenues; so you sell the customer a computer analysis and then tell him the info from the bulletin as if it came from the computer analysis. Then tell him he may need a new fuel pump and that he should do it now to avoid being left stranded. Charge him $100.00. for the computer analysis.
Is this dishonest? a little dishonest?
I live in Miami. Maybe they are representative of the auto repair business in Miami. You may say that the facilities I went to are not representative of all auto repair facilities. But I am skeptical. How does one know????
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Hammer Time
Ultimate Carjunky
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Mar 16, 2011, 9:30 AM
Post #14 of 14
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Re: 2005 Chev Avalanche continues cranking after letting go of key
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An honest competent repair facility would have provided me with the information in the bulletin at the time they offer a computer analysis. The places I took the vehicle to were either dishonest or incompetent. There is no other conclusion.
I totally disagree with you here.
First off, when a customer approaches the write up desk at any facility, there will never be a diagnosis made there, no matter how obvious it may appear. The people in this business know that things are not always what they appear to be and until they are investigated completely, any premature diagnosis can come back to bite them in the ass.
Second, the guy doing the write up is not the guy that has the technical knowledge. He is merely making arrangements for that person to examine the car. The first steps to any diagnosis is to first verify the complaint before doing anything. This is the point where the technician and only the technician would look into the data base for any possible TSBs on that problem. In this case he would have found out that the starter circuit was operating properly BUT something else in the vehicle is causing the system to crank longer than it should be. This is where the fuel pump diagnosis comes in, which I do agree with.
Now, this data base that supplies this information does not come free. We pay dearly for this service every month so this cost has to be passed on. The technician that spent all this time road testing your car, researching the data base for information and subsequently going back and testing this system's fuel system and anything else that could be triggering the long crank, has to be compensated for his time. Also remember not every shop has access to these information bulletins nor a technician smart enough to check them so don't confuse their incompetence or lack of tools with dishonestly.
Everyone is real quick to say they were ripped off but if they had any idea what it takes to stay current in this business and not make any mistakes in diagnosis, they would be very shocked.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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