code P0089
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Joined: 03-07-10
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From: knoxville, tennessee
New Member
Joined: 03-28-13
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From: kghjk
I just saw this code today.
http://engine-codes.com/p0089_gmc.html
http://engine-codes.com/p0089_gmc.html
Senior Member
Joined: 05-15-10
Posts: 3,994
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From: South Charleston, WV
Check the wiring at the hpfp. They're known to rub spots in the wiring going to the pressure sensor there. If there isn't any spots rubbed through to the wire then you're probably looking at getting a new hpfp.
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