Cadillac Escalades Missing Out
Some owners of 2015 Cadillac Escalades equipped with a 5.3L L83 or 6.2L L86 engine may comment about an SES light, wherein the technician finds DTC P0300 engine misfire on cylinders four and six and/or a tick noise. This may be the result of an AFM (active fuel management) lifter that is mechanically collapsed and/or stuck all of the time. These lifter concerns may be the result of internal locking pin damage within the lifter due to oil aeration. Inspect for valve operation. If the valve(s) are not moving, replace the AFM lifters and guides on the bank with the concern. Also, replace the oil pump pickup seal, as a faulty seal may be sucking air into the oil circuit, causing the aeration.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike MavrigianMike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
