GMC/Chevrolet Truck/SUV When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

89 K1500 ECM fuse keeps blowing

Thread Tools
 
Search this Thread
 
Old 06-14-2023, 12:29 AM
  #11  
Senior Member


True Car Nut
 
CathedralCub's Avatar
 
Join Date: Feb 2015
Location: Earth
Posts: 5,882
Received 920 Likes on 847 Posts
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Originally Posted by Swumpman
Thanks for the reply: Battery is new, alternator has been in there for awhile at least 12 years. Alternator voltage is 13.85.
What are the conditions of the battery cables and grounds?

I'd put a real volt meter on it and see if the system voltage dips low when the fuse blows. Low volts equals high amps equals blown fuses.
Old 06-14-2023, 07:21 PM
  #12  
Junior Member
Thread Starter
 
Swumpman's Avatar
 
Join Date: Jun 2023
Posts: 7
Received 8 Likes on 7 Posts
Swumpman is on a distinguished road
Default 89 K1500 ECM fuse keeps blowing

Found the short, when I put the transmission in I check the connection to the transmission and it looked good no copper showing. Here are the pics and thanks to everyone!
Pic-1 Is the way I found the plug in, all three wires were connected and twisted around each other.
Pic-2 Showing how bare the wires were.
Pic-3 After wiring up new plug in, TCC Pigtail.
carfixer007 was right when I put the 20 amp fuse in, it'* a wonder that nothing else shorted out!

See how the wires twisted around, lucky it not burn all the wire, and the VSS wires end up in the same wire loom.

That'* how bare the wires were.

New Pigtail.
The following users liked this post:
CathedralCub (06-15-2023)
Old 06-14-2023, 10:10 PM
  #13  
Senior Member


True Car Nut
 
carfixer007's Avatar
 
Join Date: Dec 2018
Location: Flint, MI USA
Posts: 2,930
Received 1,280 Likes on 1,129 Posts
carfixer007 is on a distinguished road
Default

I take it you are good now with the correct fuse.
Glad you found the problem.
The following 2 users liked this post by carfixer007:
CathedralCub (06-15-2023), Swumpman (06-17-2023)
Old 06-15-2023, 11:12 PM
  #14  
Senior Member


True Car Nut
 
CathedralCub's Avatar
 
Join Date: Feb 2015
Location: Earth
Posts: 5,882
Received 920 Likes on 847 Posts
CathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to beholdCathedralCub is a splendid one to behold
Default

Thanks for letting us know!
The following users liked this post:
Swumpman (06-17-2023)
Old 06-17-2023, 10:11 AM
  #15  
Junior Member
Thread Starter
 
Swumpman's Avatar
 
Join Date: Jun 2023
Posts: 7
Received 8 Likes on 7 Posts
Swumpman is on a distinguished road
Default

What would be a good DATA stream set up. Like to get one to hook up to my laptop.
Thanks.
The following users liked this post:
CathedralCub (06-18-2023)
Old 06-17-2023, 06:32 PM
  #16  
Senior Member


True Car Nut
 
carfixer007's Avatar
 
Join Date: Dec 2018
Location: Flint, MI USA
Posts: 2,930
Received 1,280 Likes on 1,129 Posts
carfixer007 is on a distinguished road
Default

Originally Posted by Swumpman
What would be a good DATA stream set up. Like to get one to hook up to my laptop.
Thanks.
Amazon Amazon
The following users liked this post:
CathedralCub (06-18-2023)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dgray66
GMC/Chevrolet Truck/SUV
7
11-03-2014 08:52 PM
trbomk3
Everything Electrical & Electronic
6
10-21-2006 11:17 AM
L27Buick
Audio (and aftermarket electronics)
1
04-14-2004 10:22 AM
Mayhem_3
Audio (and aftermarket electronics)
8
05-04-2003 08:28 PM



Quick Reply: 89 K1500 ECM fuse keeps blowing



All times are GMT -4. The time now is 05:25 AM.