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?

 

It depends. Get it scanned.

 

I agree. Need to have it scanned for fault codes. Generally speaking, a flashing CEL or SES light is not a good indication.

 

Stopped at AutoZone. Error code says P0303 Cylinder 3 misfire detected

 

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.

 

Thanks will do. So a stupid question. How do I find #3 cylinder?

 

What engine? It's been years since I had a Chevy V8.

 

I have the v8 5.3 Vortech engine

 

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