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Won’t start. Has new battery. Wont jump wither. 02 Sierra…

Won’t start Mechanic's Assistant:...

Won’t start

Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded?

Has new battery

Mechanic's Assistant: What is the model/year of your GMC?

Wont jump wither

Mechanic's Assistant: What year is your GMC?

02 Sierra ale 4wd

Mechanic's Assistant: Are you fixing your Sierra yourself? What have you tried so far?

Jump start and battery replacement

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Dash and lights work

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Answered in 1 minute by:
9/29/2017
Pete
Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 33,354
Experience: GM training and dealer tech for 14+ years. Diagnostics
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Do you hear any noises inside the vehicle or under hood at all like clicking or anything when trying to start the engine?

Let me know,thanks Pete

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Customer reply replied 10 months ago
I hear normal noise when turning the key to run. Turn to start and some of the dash lights go out and a single click inder the hood
Customer reply replied 10 months ago
Click under the hood seems to be coming from under the fuse box
I checked all the fuses

O.k.,the click indicates the ignition switch and starter relay are working.This in most all cases indicates the starter itself is acting up needing replaced.

There are two ways to find out for sure.

Have someone locate it under the engine on the passenger side near the back of the engine oil pan and tap on it while you try and start it.If it starts and runs then the starter needs replaced.

The other way is to test it.Test the large power wire at the starter with a test light to see if it has power at all times.Then test the smaller wire at the starter to see if it has power with the key held in the crank position.If they both have power then the starter needs replaced.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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Customer reply replied 10 months ago
Tapping the starter worked
Thank you

Your welcome

Let me know if you need anything else and feel free to rate my help here or above ( should be a link to click on ) as this is how I receive credit for my time,this can be done at any time and you can still come back here and reply if needed.Your 5 star rating is appreciated

Thanks Pete

Pete
Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 33,354
Experience: GM training and dealer tech for 14+ years. Diagnostics
Verified
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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.

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