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02 Chevy Express, P0401
I had one today that was a little out of the ordinary. A customer brought his 2002 Chevy Express,5.7L van in with the MIL on. A check with a scanner showed a P0401/EGR flow insufficient stored. Running the functional test showed that the EGR valve followed the... Login to read more. ![]()
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20 Replies Received
20 Replies Received