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International Automotive Technicians Network
Re: 94 K3500 6.5L
Posted to HD/Fleet Forum on 2/22/2007 3 Replies

Hi Dwight,

Your code 88 as best as I can remember, is a timing code. Have you tried dumping that code? I have seen a few pcm's that had the 88 set in memory, and it would not go away, even with having the pcm unpluged over the weekend. If you can't get the p... Login to read more.

3 Replies Received (View Replies)