CP4 Reliability Poll
Like many of you, I've become quite concerned with the reliability of the CP4 in our trucks. This thread is an effort to condense the numerous CP4 failure/success posts into one format that shows hard data. Please select one of the appropriate responses listed for your OWN vehicle only! By doing so, we can ensure more accurate data as I believe the DF represents a good cross-section of the LML population.
Looking for the following info:
Mileage at time of failure
Engine Hours if known
Lift pump Y/N (which brand?)
Lube added Y/N (If so, how frequently)
Fixed under warranty Y/N
External cause of failure (such as bad fuel)
2012 GMC Sierra CCSB 4x4 - SOLD
2019 Chevy Silverado CCSB 4x4
1997 Toyota Land Cruiser
Last edited by uscmas412; 02-26-2015 at 08:46 PM.