SPONSORED LINKS

Shut off while driving, no power to the ignition?

Tiny
FISHINMAN1
  • MEMBER
  • 1996 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
Was driving truck shut down like it was turned off. Now no power to ignition but have power to all accessories but no power to starter. I don't even hear fuel pump engaging.
Tuesday, May 25th, 2021 AT 2:33 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I suspect we have a fuse that is blown to the VCM or the VCM itself is the issue.

We need to start with checking the fuses for the ECM Batt in the IP fuse box (fuse 9) and then the ECM Ignition Fuse (Fuse 10).

I attached the info on this. Below.

The next thing is to check the crank sensor but this is not going to cause the fuel pump and starter to not engage, so I suspect it is a fuse issue or the VCM itself.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Let's run through this info and let us know what you find. Thanks
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, May 26th, 2021 AT 11:24 AM
Tiny
FISHINMAN1
  • MEMBER
  • 3 POSTS
I hot wired it and it started and ran fine fuses are good so computer?
Was this
answer
helpful?
Yes
No
Wednesday, May 26th, 2021 AT 4:15 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Just to be sure, you hot wired to the ignition and it ran? So you applied 12 volts to the coil? If so then yes, you appear to have just taken place of what the VCM is supposed to do. So if it were me I would put a VCM in it.

I attached the process below to replace it. Please let us know if you have questions on this. Thanks
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Thursday, May 27th, 2021 AT 8:27 PM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE

Sponsored links