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SARVC shuts down ignition

Tiny
MCSSLS
  • MEMBER
  • 2007 HUMMER H3
  • 3.7L
  • 5 CYL
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
I have a new battery and new alternator, when the SARVC is unplugged it charges at the default 13.7 volts. If I plug the SARVC in I get no reaction at all from the ignition. No lights external or dash and no crank. When driven it will hiccup and throw P0106 code and if going uphill when it hiccups it dies and takes two to three minutes before it will crank. At this point I'm thinking PCM or engine wiring harness. Mostly the wiring harness. Addendum; I have no tech 2 just obd reader and doubt the computer is a problem because I can see it fine. Will have it checked Monday at a shop. Suggestions?
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Thursday, March 7th, 2019 AT 6:49 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,959 POSTS
Hello,

Do you have power at the RVC power fuse # 7? Here is a guide to help us test and the alternator wiring diagrams so you can see how the system works and the fuse location as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Saturday, March 9th, 2019 AT 2:16 PM

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