After replacing the stereo vehicle shuts off while driving

2003 CHEVROLET SUBURBAN

189,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

TIARARICH46917

MEMBER
2 POSTS

I switched my stereo to my Denali and it locked stereo up switched it back to my suburban turned on no problem. now my suburban will just shut off no reason driving down the road and sometimes it won’t start at all.

Mar 31, 2021 at 3:23 PM

STRAILER

✓Experienced Mechanic
55,292 POSTS

This sounds like the crankshaft angle sensor or the fuel pump has gone out. when you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds? These guides should help us fix it.

https://youtu.be/dCjmRL3p4Cs

and

https://www.2carpros.com/articles/car-cranks-but-wont-start

Also, lets run the codes to see what come up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down these guides and report back.

Apr 3, 2021 at 4:06 AM

TIARARICH46917

MEMBER
2 POSTS

Yes, you can hear fuel pump kick on that was replaced not to long ago. not throwing any codes. it did start up run for 45 minutes then shut off. haven't checked crankshaft sensor. did reprogram key fob. so will let you know.

Apr 3, 2021 at 7:25 PM

STRAILER

✓Experienced Mechanic
55,292 POSTS

Please let us know what you find. We are interested to see what it is.

Apr 4, 2021 at 2:39 AM

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