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Code P0601 ECM issue

Tiny
RICHARD YARMAN II
  • MEMBER
  • 2006 CHEVROLET COLORADO
  • 3.5L
  • 5 CYL
  • 4WD
  • AUTOMATIC
  • 195,000 MILES
Intermittent stall/no start condition, cluster says reduced power. Only code is P0601. Have cleaned all ground points, as well as both battery connections, both sides of fuse to main relay box. Runs well when she will start and run. Other notes are vehicle will start run approximately five minutes. Stall and not restart. Theft light in cluster does not come on, only says reduced power.
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Sunday, February 17th, 2019 AT 12:55 PM

14 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This might be a problem with your Power-train Control Module(PCM), AKA, your vehicle's "computer". I have included for you in the diagrams below a step by step troubleshooting flowchart for you to go through. Please let us know what you find out

Thanks,
Alex
2CarPros
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Sunday, February 17th, 2019 AT 2:12 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
Will have to wait for access to a diagnostic tool, all I have is the Blue driver on my ipad.
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Monday, February 18th, 2019 AT 6:25 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
Thank you so very much for this information and I will keep you all informed!
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Monday, February 18th, 2019 AT 6:30 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

Here is a link that you might find useful. I hope that this helps.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Thanks,
Alex
2CarPros
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Monday, February 18th, 2019 AT 7:30 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
Update: was not aware of the two main ground junctions or their of their locations under the hood but after learning of them I inspected and cleaned them and now she seem to be her old self ! Will continue to update if needed and thank you! Think they are called G-105 and G-106 by the book are located #1 is on the drivers side just a little toward the windshield on the inner fender. #2 is located in line with the center of the air cleaner on the inner fender, you will need to remove the air cleaner cover to access the 10 mm bolt.
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Saturday, March 2nd, 2019 AT 2:27 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Nice work, we are here to help, please use 2CarPros anytime.
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Tuesday, March 5th, 2019 AT 11:12 AM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
Tuesday, tried to start her to go to work. No crank no start, back to the same issue but worse now. Am I on the right track?
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Thursday, March 7th, 2019 AT 6:40 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello again,

You might want to go through the troubleshooting flowchart that was sent with the first reply to you. Go through it and get back to us with what you find out please.

Thanks,
Alex
2CarPros
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Friday, March 8th, 2019 AT 11:21 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
It sounds like the PCM is going bad to me but to be sure lets do a CAN scan. here is a video so you can see how:

https://youtu.be/InIlnsjOVFA

Please run down this guide and report back.
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Saturday, March 9th, 2019 AT 12:55 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
Now I see a code U0111.
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Sunday, March 17th, 2019 AT 4:07 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
I was also able to get some information I don't really fully understand. Using a Launch scanner I saw some information says fuel sys sta B1 not ready and fuel sys sta B2 OL not ready CL.
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Sunday, March 17th, 2019 AT 4:13 PM
Tiny
SCGRANTURISMO
  • MECHANIC
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Hello again,

Can you double check the DTC number for me again? DTC U0111 is a generic code for PCM lost communication with the battery. It is used in a hybrid vehicle. The "U" in the DTC does stand for a Network Error, though.

Thanks,
Alex
2CarPros
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Sunday, March 17th, 2019 AT 9:40 PM
Tiny
RICHARD YARMAN II
  • MEMBER
  • 8 POSTS
I was finally able to get a computer that makes the truck run correctly, but now have code P0315 which is crank position not learned. It's alive and runs as it did before. But worried about driving it.
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Wednesday, April 17th, 2019 AT 2:39 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Here is the information from the factory on DTC P0315 and how to fix it. I have included it in the diagrams down below. Please go through it and get back to us with what you find out, please.

Thanks,
Alex
2CarPros
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Wednesday, April 17th, 2019 AT 3:45 PM

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