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1989 Chevy Silverado fuseable link

Tiny
609LEN
  • MEMBER
  • 1989 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
I have a problem with wiring diagram, fuseable link wire( grey )going to ecm is bad. But it is on post cloest to driver side.
Friday, October 30th, 2009 AT 3:46 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome, not sure I understand your post? One of the wires off positive battery post, should go to junction block, just follow the wire. The fusible links are at the junction block. You can take negative battery loose, so the junction block is dead.
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Friday, October 30th, 2009 AT 4:15 PM
Tiny
609LEN
  • MEMBER
  • 2 POSTS
Im sorry, Im talking about fuseable links; posts on juncton box do not match wireing diagram? Wires have not been moved. Facing juntion box 1st post on right, grey to fuse to red to ecm?
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Saturday, October 31st, 2009 AT 9:00 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
If I don't know which fusible link is which, I test them all. Just get past the link, use a testlite start checking.

If you want to know which circuit it is, take the suspect circuit loose at both ends, make sure there is no voltage, do a resistance test. See if there is continuity between the ends.
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Saturday, October 31st, 2009 AT 10:35 AM

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