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Service Engine Soon Light Flashing

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Old February 4th, 2019, 12:01 PM
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Default Service Engine Soon Light Flashing
I have a 2000 Chevy Silverado and driving into work this AM my "Service Engine Soon" light came on it stays lit for a while and then starts to flash and then will stay lit and then start to flash. Is my truck safe to drive under this condition?
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Old February 4th, 2019, 2:17 PM
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It depends. Get it scanned.
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Old February 4th, 2019, 5:13 PM
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I agree. Need to have it scanned for fault codes. Generally speaking, a flashing CEL or SES light is not a good indication.
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Old February 4th, 2019, 7:16 PM
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Default Cylinder #3 misfire
Stopped at AutoZone. Error code says P0303 Cylinder 3 misfire detected
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Old February 4th, 2019, 7:18 PM
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Default Cylinder #3 misfire
Going to install new plugs and wires. And new #3 coil anything else that I should be looking at?
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Old February 4th, 2019, 7:44 PM
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Originally Posted by rhayes
Going to install new plugs and wires. And new #3 coil anything else that I should be looking at?
That would be a good place to start and what I was going to suggest.
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Old February 4th, 2019, 7:56 PM
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Default Cylinder #3 misfire
Thanks will do. So a stupid question. How do I find #3 cylinder?
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Old February 4th, 2019, 8:32 PM
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What engine? It's been years since I had a Chevy V8.
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Old February 5th, 2019, 4:51 AM
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I have the v8 5.3 Vortech engine
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Old February 5th, 2019, 9:06 AM
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Second cylinder from the front driver's side.

8 7
6 5
4 3
2 1

Firing order - 1-8-4-3-6-5-7-2
Last edited by Doug D; February 5th, 2019 at 9:10 AM.
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