dtc po300, random/multiple cylinder misfire

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i get this code at least 3 times a week on my truck, could it really be so hard to diagnose? i guess so, so far i've replaced ign. coil, module, dist. cap&rotor, cam position, and about 200 miles of wire to make sure its not a stupid broken wire arcing out or not connecting, any clues?

darn good at this in North Conway NH

Jul 21, 2010

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1997 GMC C1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

dtc po300, random/multiple cylinder misfire

What is your question?

darn good at this in North Conway NH

Jul 21, 2010

0 Replies

This question doesn't have any answers yet

Get the conversation going by signing in or creating an account

Submit an Answer

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1997 GMC C1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.