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reelcamper1's avatar
reelcamper1
Explorer
May 30, 2019

2015 GMC Sierra Denali-catastrophic fuel pump failure

Had a catastrophic fuel pump failure in our 2015 GMC Sierra Denali 2500HD Diesel......lost all power steering, brakes, etc. Dealer wants $12000 to repair! When the pump fails, metal shavings go thru e...
Tow Vehicles
IdaD's avatar
IdaD
Explorer
May 30, 2019
I would contact GM. They've been pretty fair on most of the CP4 pump failures from what I've seen.

This is why the CP4 pump sucks. It probably isn't likely to go on any given truck, but if you're unlucky and it does on yours have a really big problem.

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