Will not start?

2007 GMC ENVOY
112,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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STEVE620
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  • 70 POSTS
I replaced the generator (battery) control module and the negative battery cable. I started car and it was running fine for about 10 minutes, then it started to get a lot of hesitation. Now the car will only run for about 2 seconds and shuts down. I get just about all the dash lights come on. This battery module mounts on the negative cable. Can you help me with this?
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Oct 7, 2022 at 4:04 PM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi,

This could be a few things. Based on your description, I would recommend checking fuel pump pressure first. If it is low, these symptoms can be the result.

Here is a link that explains in general how to check the pressure:

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

Also, I attached diagnostics for fuel pressure testing below. Take a look through them and let me know if you are comfortable performing them.

Start with this and let me know the results.

Take care,

Joe

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Oct 7, 2022 at 8:35 PM