2003 GMC Safari no fire to coil

2003 GMC SAFARI
250,000 MILES • 6 CYL • 2WD • AUTOMATIC
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GARY RHOADES
  • MEMBER
  • 2 POSTS
i got voltage off the pink wire.but i cant get a pulse from the white wire.what can i check now?
Feb 18, 2010 at 5:31 AM
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JDL
  • ✓Experienced 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://images.2carpros.com/forum/automotive_pictures/170934_ignition_module_1.jpg

Feb 18, 2010 at 6:37 AM
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