Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

This answer was rated:

I have one Man please. I have a 2000 GMC T-7500 Serial

Hi. I have one for...
Hi. I have one for Cat Man please. I have a 2000 GMC T-7500 Serial Number1GDL7C1C2J503507. It has a Cat engine #8YL91240. Driver shut it off Friday night, came in thismorning and it will not start? Turns over fine, runs on starting fluid. Im thinking there is no ignition? Could you please send a picture of the pin configuration on the ECM and tell me which pins should have power and which one(s) are ground? Thanks.
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 4 minutes by:
7/5/2016
Technician: Cat Man, Cat Engine Expert replied 6 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Thanks for asking your question and requesting me. I will try and help you out.
I can get you the information you need.
You should have power on pins 52, 53, and 70. The grounds are pins 65 and 67. I will get you a pin configuration. Be back in a few minutes.
Ask Your Own Medium and Heavy Trucks Question
Technician: Cat Man, Cat Engine Expert replied 6 years ago

Here is the info you need.

http://www.dropbox.com/s/xn9nf9zc2retpjq/ECM%20connectors.jpg?dl=0

lease reply back if you need more help.

Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Cat Man and 87 other Medium and Heavy Trucks Specialists are ready to help you
Ask your own question now
Customer reply replied 6 years ago
Morning. So.... All functions are on the harness side. All power and grounds are there. No check engine lights. No codes?? Dead ECM??
Technician: Cat Man, Cat Engine Expert replied 6 years ago
Thanks for the information.
Yes. It sounds like the ECM has failed.
Please reply back if you need more help or have more questions. I am happy to assist.
Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Cat Man Your Own Question
Cat Man
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
10,344 Satisfied Customers
Experience: I am ASE Master Truck Certified.

Cat Man is online now

Related Medium and Heavy Trucks Questions
I have a catepillar 3406e Serial 2ws20176 i need a ecm pin
I have a catepillar 3406e Serial 2ws20176 i need a ecm pin out 70 pin My jake abd cruise don't work and i have et Showing service brake pedal on I check the brake switch and is good… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
I currently have Injector not Ok "short" on all 6 injectors.
hello, I currently have Injector not Ok "short" on all 6 injectors. I have had the truck scanned and assuming the injector driver has failed. this was a new/reman ecu and since install the truck was n… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001
Hi Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001 Peterbilt. when I plug in my scan tool there is no communication with the ECM. I have unplugged the truck side connector of the ECM and … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
I have a Cat C12... truck was running and suddenly shut off.
I have a Cat C12... truck was running and suddenly shut off. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
CAT MAN, I have a C15 acert esn mxs71496. I have code 231-12
CAT MAN, I have a C15 acert esn mxs71496. I have code 231-12 active as well as 253-2. 253-2 was active for rating number and esn not programmed. I programmed both in the configuration tool but it will… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a gmc 7500 with a cat that has a electrical problem
I have a gmc 7500 with a cat that has a electrical problem to the engine. Do you have a real good gmc mechanic available at this time. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2003 GMC 7500 with a 3126 cat, truck came in no
Hello, I have a 2003 GMC 7500 with a 3126 cat, truck came in no start no crank, could not communicate with ecm, checked power and grounds found all ok, replace ecm, now I can communicate with ecm and … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I installed a different ECM on my 3126 cat and it still
I installed a different ECM on my 3126 cat and it still reads no ECM detected on scanner, just wondering what pins go to plug underneath the dash… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Hey Mr Cat man, got another one I need some help on, it is
Hey Mr Cat man, got another one I need some help on, it is a 2002 Sterling with a c-10 in it, it shut down and came in on a hook. My computer is not detecting the ecm, can you get me the schematic for… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Cat man good evening, have you ever had a regen light turn
Cat man good evening, have you ever had a regen light turn and staying on after you close the ignition switch? I have 2009 sterling cat c13 that once I close the switch and shut the engine off the reg… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 3126 cat engine in a 1998 GMC School Bus. Something
I have a 3126 cat engine in a 1998 GMC School Bus. Something killed the batteries after sitting for just one week. After boosting it would not start. Also, the wait to start light no longer comes on. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Have a c15 2007 same deal fuel delivery is good will crank
Have a c15 2007 same deal fuel delivery is good will crank over just will not fire up owner drove truck to location shut it off did his farming and truck will not crank up now… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
hi cat man,have little pistol of a truck here fault code 226-14
hi cat man,have little pistol of a truck here fault code 226-14 any discription of fault code?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Working on a 1998 GMC with a 3116 Cat motor. Truck will not
Working on a 1998 GMC with a 3116 Cat motor. Truck will not start. I am not sure where the fuel shut-off solenoid is at. I need to know where to find it and need to know if any special tool is needed … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Hello have a 2003 F450 with a cat 3126 serial HEP22256 Check
Hello have a 2003 F450 with a cat 3126 serial HEP22256 Check engine light never comes on at all not even at KOEO. No communication with ecm with snap on pro-link- or et program. Unit just shut off dri… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
We have a 2000 Kenworth T2000 with a Cat engine. It shut down
We have a 2000 Kenworth T2000 with a Cat engine. It shut down and won't start. We have troubleshot every mechanical thing possible. Finally came to believe that it was a computer shut down of some kin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Im working on a 2009 Sterling tractor with an acert c15. Truck
Im working on a 2009 Sterling tractor with an acert c15. Truck runs for 20-30 mins then dies like someone turned off the key. I can get two diag codes out of the dash cluster, SID 25 4 FAIL 07, and SI… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Clayton I got truck running but I have two problem the (truck
Clayton I got truck running but I have two problem the (truck run great by the way thank to your help) First when I bought the ecm I told the it was a ten speed not auto shift. But it has electrical s… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
627 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.

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:

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

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,344 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

5,115 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

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