Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy
This answer was rated:

2003 Yukon: 140k miles..Alternator tested ok..dash lights come..engage

2003 Yukon xl 140K miles...
2003 Yukon xl 140K miles. Alternator tested ok, battery new, starter tested ok. dash lights come on but starter will not engage. hear clicking under the car. but starter will engage. ground connections and starter connections all removed, cleaned and tightened. A few days prior to this "Battery not charging" warning lamp came on which led to testing alternator and battery. ran fine for two days, then alternator quit charging, battery ran down, alternator removed and test ok and battery recharged. What could be the problem?
Show More
Show Less
Ask Your Own Chevy Question
Answered in 17 minutes by:
2/28/2010
Kevin Bourcier
Kevin Bourcier, Technician
Category: Chevy
Satisfied Customers: 385
Experience: 35 Years experience specializing in A/C Repairs and Diagnostics exclusively to GM dealerships
Verified
You could start by first checking the under hood fuses marked " IGN A " & " IGN E " . You should also check the alternator output stud ans ensure that it has 12 volts to it with the engine off . Also you mentioned that you hear a " click " sound from the starter . You will need to check the " switch " terminal on the starter while the key is in the start/crank position . A no crank condition many times is the result of a defective " range switch " on the side of the transmission .
Ask Your Own Chevy Question
Customer reply replied 7 years ago
Will check the voltage on the alternator and ign A & E fuses momentarily.
Where is the range switch on the side of the trans? Pass or driver side - what does it look like?
It is on the driver side . The switch can be checked with the use of a scan tool . you should do the other tests before looking into the transmission switch .graphic
Ask Your Own Chevy Question
Customer reply replied 7 years ago
Ign fuses A & E are OK. Alternator voltage is 12.6 off the positive post and negative frame connections. How does the trans switch effect the starter circuit? Is it possible the starter solenoid is gone?
The starter circuit is controlled by the range switch for " park & neutral " safety .
Ask Your Own Chevy Question
Customer reply replied 7 years ago
So to recap, the alternator is Ok, battery is putting out 725 CCA and tests 12.6v ign off, both from the battery and alternator. Starter tested OK. All connections tight. When key is turned to start, only a click is heard. All interior and dash lights work fine. When key is turned to "ON" position, check system rolls through it's normal cycle, battery light is on in upper right corner...what to test next?
Test for 12 volts positive at the " start " terminal of the starter . You can also " jumper " the start circuit at the relay but that doesn't tell you what is happening on the starter when you turn the key .
Ask Your Own Chevy Question
Customer reply replied 7 years ago

Customer reply replied 7 years ago
Starter tested 12.6 on the positive terminal and ground.
Customer reply replied 7 years ago
Could it be that the starter solenoid is bad even though the starter unit tested ok? Could I jumper the positive on the solenoid to the starter itself to see if I get a the starter to engage/ motor to turn over?
You need to test for 12 volts on the " start " terminal of the starter with the key in the " crank ' position . There is a small terminal on the starter solenoid that you need to test .
Ask Your Own Chevy Question
Customer reply replied 7 years ago
I'll try this tomorrow -dark here. Got too frustrated. Read message boards tonight and it seems many owners have had this or similar problem but noone ever says what the solution is. Posts say, "'starter just clicks', replaced starter, battery, etc, alternator ok but still just clicks". I'm afraid I'll be replacing the starter only to find its not the starter.

I will test tomorrow for voltage on the starter terminal when cranking. If there's voltage there when cranking that means solenoid is ok but not enough power to turn over the engine (bad starter motor) right?

If there is 12 volts , yes .

Kevin Bourcier
Kevin Bourcier, Technician
Category: Chevy
Satisfied Customers: 385
Experience: 35 Years experience specializing in A/C Repairs and Diagnostics exclusively to GM dealerships
Verified
Kevin Bourcier and 87 other Chevy Specialists are ready to help you
Ask your own question now
Customer reply replied 7 years ago
Will test for 12 volts on starter side with ignition turned to "start" tonight. I will be sure and follow up so that the transcation get closed out properly.
Let me know . Will work through it with you .
Ask Your Own Chevy Question
Customer reply replied 7 years ago
The starter tested perfect. I talked to techs at the shop and they asked if the all the lights go out on the dash when I turn the key to "start" and they do. So there is a short somewhere in the system. I did this WITH and WITHOUT the starter installed and all the lights went out in the start position. This must have been the case from the beginning and the short was drawing on the battery. The situation got progressively worse over a two week period as the first symptom was "battery not charging" but that message cleared after driven for 20 seconds and never reappeared until it appeared on the way home from my son's school. Now the circuit will not even energize the starter with a full charge. >Checked all battery cables (pulled the rubber and connections are clean)
>Cleaned the ground connection on the block (was clean already)
>inspected the cables running from the battery to the starter - no nicks or cuts
>What else is in the starter circuit that would produce a short...Fuel pump??

Have you connected a scan tool to check for codes ?
Ask Your Own Chevy Question
Customer reply replied 7 years ago
I did an exhaustive search of the internet and found a list of TSBs on the vehicle - one pinpointed the problem - intermittant no starts (no crank). Turns out it was a chaffed wiring harness under the driver's seat, that, when the seat is moved with either seat memory changes for different drivers etc. shorts the system - battery drains over time, not enough power to start, and when the key is turned to the "start" position shorts out (for some reason) all the dash lights in the "start" position. The FIX: I removed the driver's seat and inspected ALL the wiring harnesses and found one that was nicked by a sharp edge on the seat frame. All it took to solve was pulling some slack in the harness and wrapping the wire. The vehicle started immediately and is working fine now - after removing the starter and testing, removing alternator and testing, checking all the cables to and from the battery to starter, etc. It was a technical service bulletin that decsribed the problem and the fix. Thanks though for all your help. Great site.
Thats great . Glad to hear you solved the issue. Thanks for using Just Ask !
Ask Your Own Chevy Question
Ask Kevin Bourcier Your Own Question
Kevin Bourcier
Kevin Bourcier
Kevin Bourcier, Technician
Category: Chevy
Satisfied Customers: 385
385 Satisfied Customers
Experience: 35 Years experience specializing in A/C Repairs and Diagnostics exclusively to GM dealerships

Kevin Bourcier 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)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

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

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
1989 5.7 liter throttle body engine. I was driving, engine
1989 5.7 liter throttle body engine. I was driving, engine was running fine, and came to stop sign. Upon trying to accelerate from the stop, the engine would hardly run. Bad miss and backfire visible … read more
rpmdiag
rpmdiag
High school
7,268 satisfied customers
1998 blazer takes longer to start when the engine is at
1998 blazer takes longer to start when the engine is at normal operating temperature after it's been off about 5 minutes or more. Starts up like new in the mornings after the engine has cooled down al… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
Replaced the thermostat and display still shows up engine
replaced the thermostat and display still shows up engine hot ac off. i was told there is a way to reset it from the cluster. … read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
I'm having issues with idling and stalling. Check engine
check engine light on yes. stall at idle only. I just replace the ignition control module and code p0300 has gone off but the same symptoms exist now it gives code p0106 … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Engine idles high when cold and then pulsates for a while
engine idles high when cold and then pulsates for a while until it warms up … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
How do I determine if the engine temperature sensor is
how do I determine if the engine temperature sensor is working properly in my 2005 Chevy Venture. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2008 Chevrolet Tahoe. Intermittently the engine will not
2008 Chevrolet Tahoe. Intermittently the engine will not crank. I found if I wiggled the negative cable it would start. I have changed the battery and the Negative cable assembly but the problem has r… read more
roy
roy
Associate Degree
3 satisfied customers
1995 Suburban K2500 with 7.4L engine here. There is a loose
1995 Suburban K2500 with 7.4L engine here. There is a loose wire, dark green with a white stripe, running next to auxillary fan switch wire (light green). Right now it's not connected to anythimg, jus… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
The reduce engine message and the engine light on and alot
the reduce engine message and the engine light on and alot if shacking when I started it this morning … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
The engine shuts off, and its service traction control
the engine shuts off, and its service traction control popped up on the dash.. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Check engine light not on with key on, Not on alt all with
Yes -performed tuneup replaced all sensors except knock … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Engine is running 240 degrees and not holding water/anti
engine is running 240 degrees and not holding water/anti freeze and heater is not working … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Check engine light on engine hot ac off message. Stay on.
check engine light on engine hot ac off message JA: Does the light stay on, or does it blink? Customer: stay on JA: What is the model/year of your Chevy? Customer: impala 2006 JA: Are you fixing your … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2013 Tahoe with 5.3 engine. The service engine
I have a 2013 Tahoe with 5.3 engine. The service engine light comes on when the temperature drops below 45 degrees. It will go out when the temperature is above 45 or 50 degrees. The code it sets is P… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Check engine light is on... It spudders at an idel. And
Check engine light is on... It spudders at an idel. And sometimes doesnt start .. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
The engine and traction control lights are on, and there is
The engine and traction control lights are on, and there is a "service traction" message on my 2011 Malibu. … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
86 K10 temp. gauge goes to hot and engine dies, but engine
86 K10 temp. gauge goes to hot and engine dies, but engine is still cool … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
1996 chevy Silverado k2500 5.7 vortec engine engine light on
1996 chevy Silverado k2500 5.7 vortec engine engine light on po300 random misfire detected we replaced plugs wires Distributor cap and rotor pickup coil checked compression everything is good there ch… read more
Michael Solis
Michael Solis
363 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