Mechanics

CHEVROLET SILVERADO CODE SCANNER PROBLEM

2002 Chevrolet Silverado • 110,000 miles

When its cold out engine doesn't want to stay running, but as it warms up it runs better. Ran my code scanner and got a po430 and300 codes. Ive been told that I need to remove my intake manifold and have it machined . Does this sound right? It has a 5.3 vortec
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Rudedawg454
March 6, 2013.




430 is a cat failure code.

300 is a random miss fire

expensive guess on the intake.

I would start with basics. Check fuel pressure as a start.

Roy



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