2003 GMC Safari no fire to coil

Tiny
GARY RHOADES
  • MEMBER
  • 2003 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
I got voltage off the pink wire. But I cant get a pulse from the white wire. What can I check now?
Thursday, February 18th, 2010 AT 1:31 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, I'd check trouble codes. At the least, you need an obd11 codes reader. The white wire at ignition module comes from pcm, pulse, engine cranking. Pink is voltage, black is ground. White wire with black tracer, pulse, goes from module to coil.

I want to check for rpm signal.


https://www.2carpros.com/forum/automotive_pictures/170934_ignition_module_1.jpg

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Thursday, February 18th, 2010 AT 2:37 PM

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