Won't start using ignition switch, it will start if jumped at relay. Switch is good.
Mar 17, 2016 at 7:01 AM
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HMAC300
AUTOMOTIVE REPAIR CONTRIBUTOR
48,601 POSTS
we don't have any information on these or any other medium duty truck, however it may be a security issue so look online to see if there is any information on how to reset it. Or call a dealer if online fails.