Will not start

Tiny
DAVIDBLANK
  • MEMBER
  • 2007 GMC ENVOY
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Started having problems with truck not starting. Thought was battery, replaced battery an alternator. Would work fine for a day or so then it would start over just turning over like getting no fuel. Pull fuel pump relay an put back in starts right up. Replaced relay still having same problem. Have any suggestions what we should try next?
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Sunday, June 2nd, 2019 AT 8:28 AM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

Does the engine crank over when it wont start?

When it does not start, can you hear the fuel pump run?

Can you check the fuel pressure when it will not start?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy
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Sunday, June 2nd, 2019 AT 9:07 AM
Tiny
DAVIDBLANK
  • MEMBER
Yes, the engine cranks over but no start. If you pull the fuel pump relay then put it back in it starts right up. I replaced relay and is still occurring.
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Sunday, June 2nd, 2019 AT 11:02 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, you need to check the fuel pressure when it will not start.

Roy
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Sunday, June 2nd, 2019 AT 11:37 AM

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