Quote:
Originally Posted by Raymond
2004 Chev Z-71 with 5.3 gas, will try to get it to AutoZone but the light stops blinking before I can get anywhere. 
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Thats ok ..............the ECU keeps any codes that pop up in it memory for 200 ignition(?) cycles and if the code doesnt come back it will clear within that cycle. So if it came on this morning they can pull the codes even if the CEL isnt on.