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1999 GMC Savana oil pressure kill switch

Tiny
KENASH
  • MEMBER
  • 1999 GMC SAVANA
  • V8
  • 2WD
  • AUTOMATIC
  • 71,000 MILES
Do 5.7L GMC vans have an oil pressure kill switch, activated by loss of oil pressure?
Thanks for any replies.
Sunday, March 9th, 2008 AT 8:41 AM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Try this simple test, locate the fuel pump relay in the under hood fuse relay center, with engine running, pull the fuel pump relay, if the engine stops running the oil pressure switch is faulty, if it continues to run, it's OK. Any codes stored? SES light on? Retrive codes and freeze frame data, post here. The switch is on the top rear of the engine, and has a three wire connector.
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Sunday, March 9th, 2008 AT 9:02 AM
Tiny
SLYGUY61520
  • MEMBER
  • 5 POSTS
Will a faulty oil pressure switch also make it not start?
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Monday, January 19th, 2009 AT 6:59 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Yes, it's a saftey system.
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Tuesday, January 20th, 2009 AT 4:47 PM

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