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Power source

Tiny
LEEYOUNGKAN
  • MEMBER
  • 2000 GMC SIERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
2000 GMC 4.3 Sierra will not start. Jumping pink wire in relay box that sends key-on/run power to ignition module and coil starts truck. Need diagram to find source that supplies this power.
Friday, November 12th, 2010 AT 3:58 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Check injector fuses and engine 1 fuse. The site has had a makeover, I'm still trying to figure how to post a diagram?
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Friday, November 12th, 2010 AT 4:15 PM
Tiny
LEEYOUNGKAN
  • MEMBER
  • 14 POSTS
Fuses are OK, I'm just not getting power to these fuses. When I jump it from a power source, then the truck starts, I suspect the fuse box might be the problem, but I need a power distribution diagram to be sure
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Saturday, November 13th, 2010 AT 4:53 AM
Tiny
LEEYOUNGKAN
  • MEMBER
  • 14 POSTS
Haven't gotten your diagram yet, however, I would like you to know that I found the problem. It was a faulty main fuse/relay box, I was getting power to the ignition module and the ignition coil pink wire with ignition on, but lost it when cranking, I further learn that this is a common problem with these fuse boxes. Thanks for your help.
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Monday, November 15th, 2010 AT 1:41 PM

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