How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sprinkles08 Your Own Question
sprinkles08 , ASE Certified Technician
Category: Jeep
Satisfied Customers: 21110
Experience:  Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
Type Your Jeep Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

2000 Jeep Grand Cherokee Laredo: that wont start..dash... a key

Resolved Question:

I have a 2000 Jeep Grand Cherokee Laredo that won't start. Has gas, battery is fine but there is a little light on the dash... a key with a line through it what do I do?
Submitted: 6 years ago.
Category: Jeep
Expert:  sprinkles08 replied 6 years ago.

Hello and welcome to JustAnswer!


What happened when you first tried to start it and it wouldn't start? Did it start up and die a few times? Or crank but not start at all?

Customer: replied 6 years ago.
It cranks just fine but will not start
Expert:  sprinkles08 replied 6 years ago.

Turn the key on without trying to start the engine and take note of what the fuel gauge and voltmeter do. See if they work or if they are staying down now that it won't start.


Customer: replied 6 years ago.


All are staying down.

Expert:  sprinkles08 replied 6 years ago.

For whatever reason your powertrain control module (PCM) is down. This is the module that controls the engine. This can be an internal PCM problem or external. If the PCM loses a power or ground feed, if the sensor ground circuit shorts to voltage, or if any of the 5v reference circuits short to ground it will take the PCM down.


It's going to take some electrical testing to see what is going on for sure. If you have a 4.0 engine a very common cause of this is an internally shorted crankshaft position sensor which takes the PCM down. If you have a voltmeter and are able to do some electrical testing I can help you determine what is going on.

Customer: replied 6 years ago.
I don't have a voltmeter :( Is this something that will need to be taken care of by a dealership? Or... do other garages have the ability to fix it?
Expert:  sprinkles08 replied 6 years ago.
Any good independent shop or dealer should be able to diagnose and repair this. If you have a thick gray-headed ignition key however, and the PCM is the problem, the replacement one will need to be programmed using a dealer scan tool. The thick gray key means you have the SKIM system which uses special programming and a transponder chip in the key to be able to start and run the engine. The blinking light you saw on the dash sounds like it was the SXXXXX XXXXXght and you do have this system.
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 21110
Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
sprinkles08 and 5 other Jeep Specialists are ready to help you

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... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...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:

  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
< Previous | Next >
  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, NY

Meet The Experts:

  • Chris


    Shop Foreman

    Satisfied Customers:

    Jeep Certified Master Tech
< Last | Next >
  • Chris's Avatar


    Shop Foreman

    Satisfied Customers:

    Jeep Certified Master Tech
  • Mark's Avatar


    22 Year Factory trained technician

    Satisfied Customers:

    Jeep factory training........25 years in the industry.
  • Dave's Avatar


    Jeep Master Tech

    Satisfied Customers:

    Chrysler Triple Master, ASE master Tech AA degree in Auto.
  • moparfl's Avatar


    ASE Certified Technician

    Satisfied Customers:

    ASE Master Tech Chrysler Dodge Jeep Master Tech
  • Tim Mohr's Avatar

    Tim Mohr


    Satisfied Customers:

  • Ron Z.'s Avatar

    Ron Z.

    - Jeep Tech -

    Satisfied Customers:

    18+yrs experience. State Inspector & Jeep Diagnostics/Repair
  • jeepmopar76's Avatar


    Jeep/Chrysler Triple Master Tech

    Satisfied Customers:

    32yr ASE Master Tech, 9yr Chrysler Master Tech, 19 yr Jeep Dealership service including AMC/Eagle