No start after stalling

2003 YUKON

MEMBER
2003 GMC YUKON
5.3L
V8
4WD
AUTOMATIC
225,678 MILES

Was heading home truck stalled on the road and would not start. Left it alone for two hours and it started fine but only ran for fifteen minutes then stalled again and will not start at all. Scanned says anti theft system but no restart will solve this for me? People are saying bad PCM/BCM need replaced. Any help would be awesome.

Sunday, August 25th, 2019 AT 9:00 AM

5 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Good morning,

You need to test for spark and fuel when it does not start.

Check the fuel pressure. Try spraying some carburetor cleaner in the air filter and see if it starts and stalls.

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

Check for a spark to the plugs as well.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Roy

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Sunday, August 25th, 2019 AT 9:09 AM

2003 YUKON

MEMBER
3 POSTS

Did all of that still have nothing after first start. After sitting for a few hours changed crank sensor, checked fuel pump and pressure, did plugs and wires truck has spark and fuel.

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Monday, August 26th, 2019 AT 2:37 AM

ASEMASTER6371

MECHANIC
52,796 POSTS

Okay, if it has fuel and spark, then test the compression. It is the last thing you need to run.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy

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Monday, August 26th, 2019 AT 2:45 AM

2003 YUKON

MEMBER
3 POSTS

Did a compression test everything is good only code that is coming up is anti theft system, but it clears and still wont run. If you leave it alone for a few hours it will start perfectly fine and shut off once it reaches normal operating temperature.

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Tuesday, August 27th, 2019 AT 2:59 AM

ASEMASTER6371