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Old 07-21-2008, 11:17 PM   #1 (permalink)
Freestylest22
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Check fuel filter code

I am getting the po87 or something around that code that states check fuel filter. The truck then governs itself to 2000 RPM's. I put a brand new filter on it and I'm still getting the problem. What is the problem that I'm most likely to have?
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Old 07-21-2008, 11:23 PM   #2 (permalink)
paint94979
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Quote:
Originally Posted by Freestylest22 View Post
I am getting the po87 or something around that code that states check fuel filter. The truck then governs itself to 2000 RPM's. I put a brand new filter on it and I'm still getting the problem. What is the problem that I'm most likely to have?
Engine limp mode.
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Old 07-21-2008, 11:31 PM   #3 (permalink)
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I know its in a limp mode, but what is the cause of it? Weak pump, bad injector?
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2011 GMC Denali HD. All options. Leveled on 33x12.50R20 Toyo MT's. H&S mini maxx but not installled. B&W gooseneck and Tow and Stow hitches. Big Rig Ice running LED lights. RhinoLined over the rail. Aries wheel to wheel bars. Weatherguard digital floormats. Firestone Ride-Rite air bags. 5% tint. Navi bypassed.
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Old 07-21-2008, 11:47 PM   #4 (permalink)
Rich H.
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Does it come back after you remove the code from the computer?
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Old 07-23-2008, 08:47 PM   #5 (permalink)
Freestylest22
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It dosen't come back immediatly. Just when the truck is under a load for a few seconds.
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2011 GMC Denali HD. All options. Leveled on 33x12.50R20 Toyo MT's. H&S mini maxx but not installled. B&W gooseneck and Tow and Stow hitches. Big Rig Ice running LED lights. RhinoLined over the rail. Aries wheel to wheel bars. Weatherguard digital floormats. Firestone Ride-Rite air bags. 5% tint. Navi bypassed.
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Old 07-23-2008, 09:42 PM   #6 (permalink)
LMS2707
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i got the same trouble but just when my PPE its on level 5 ???
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Old 07-23-2008, 10:30 PM   #7 (permalink)
jeffnzoya
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My 07 is in at the dealership with that same problem, plus, alot of black smoke.

I am being told by the tech that when the code comes up, the fuel pressure is regulated at exactly 13000lbs. It should be 26000lbs. They ordered a test kit that will check something in the return line.

Jeff
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Old 07-23-2008, 10:37 PM   #8 (permalink)
nitroracer1980
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i had the same problem when i didn't use a AC/DELCO fuel filter. they need about 2 bhs or less the after market one, get about 2 or higher if you didn't change it with a AC/DELCO i would change it. i got some cheep one tring to save money but cost me about $350 when took to dealer they said it was the cheep filters replace with AC/DELCO problem solved.
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Old 07-24-2008, 11:45 AM   #9 (permalink)
RI Chevy Silveradoman
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Return to stock tune

Quote:
Originally Posted by Freestylest22 View Post
I am getting the po87 or something around that code that states check fuel filter. The truck then governs itself to 2000 RPM's. I put a brand new filter on it and I'm still getting the problem. What is the problem that I'm most likely to have?
Did you try to return to the stock tune and see if that takes care of the codes and the problem? Stock is better than operating at 1/2 power!
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Last edited by RI Chevy Silveradoman; 07-24-2008 at 11:47 AM.
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Old 07-25-2008, 07:53 AM   #10 (permalink)
Freestylest22
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I always use a WIX brand fuel filter. On my truck it dosen't matter if the tank is full or empty. I haven't tried putting the stock program back on the truck yet.
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2011 GMC Denali HD. All options. Leveled on 33x12.50R20 Toyo MT's. H&S mini maxx but not installled. B&W gooseneck and Tow and Stow hitches. Big Rig Ice running LED lights. RhinoLined over the rail. Aries wheel to wheel bars. Weatherguard digital floormats. Firestone Ride-Rite air bags. 5% tint. Navi bypassed.
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