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2014 Chevy Silverado
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flashing service engine soon light

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Old Oct 26, 2012 | 9:04 PM
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Default flashing service engine soon light
ok i have a 01 2500 hd with a 6.0 in it the service engine light just started flashing and it is popping and rough idling what could be the problem its got about 200,000 miles on it
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Old Oct 27, 2012 | 7:25 AM
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post the codes that have set....probably misfire codes.

if you drive it in this codition you WILL damage the catalytic convertors.
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Old Oct 27, 2012 | 7:53 AM
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Flashin ses light is generally a misfire like said above. Need the codes to see if anything else may be with it though
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Old Oct 27, 2012 | 8:11 AM
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i have not had the codes read yet it happened late last night and we just drove it home the parts store is maybe five miles up the road should it be safe to drive there
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Old Oct 27, 2012 | 10:19 AM
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i pulled the plugs and a few looked burned and crusty could that be the problem?
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Old Oct 27, 2012 | 10:25 AM
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I read on a older post someone said to shim the crank senor on engines with high miles could that be the problem
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Old Oct 27, 2012 | 3:26 PM
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alot of people looking at this post could someone please help me out
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Old Oct 27, 2012 | 4:11 PM
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Put new plugs and wires in. Let the computer reset by unplugging the negative battery cable for a hour or so and then restart and drive it. See what it does then
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Old Oct 27, 2012 | 5:14 PM
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i took it and had the codes read it had the misfire code and knock sensor also o2 sensor but it has ran fine all day long with no no problems
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Old Oct 27, 2012 | 6:00 PM
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Originally Posted by corbett
I read on a older post someone said to shim the crank senor on engines with high miles could that be the problem
not likely. guessing at fixes without evidence of the problem is a terrible way to troubleshoot. If the plugs are worn, change them. Post the actual code p03XX
Last edited by tech2; Oct 27, 2012 at 6:03 PM.
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