Some 2019-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) may have a misfire condition with a bent pushrod that leads to a collapsed lifter or the lifter comes apart. Misfire DTCs P0300 – P0308 may be set.
If Service Information diagnostics lead to a collapsed lifter and/or a lifter that has come apart, it is recommended to replace the valve lifter guide and the four lifters. (Fig. 23) It is not necessary to replace the oil control solenoid valve.
Fig. 23
Note the installed position of the valve lifter guide. The notched area of the lifter guide aligns with the locating tab on the engine block. (Fig. 24) Install the new valve lifter guide and the lifters as an assembly.
Fig. 24
The part will be requested back by GM engineering. Be sure to mark the guide to show the location of the cylinder for inspection. Do not cover the date code.
For more information, refer to #PIP5776.
– Thanks to Richard Renshaw
I AGREE.. THIS DOC. IS RIDICULOUS. MYSELF AS WELL AS FRIENDS AT OTHER DEALERS ARE GETTING THESE 80 THOUSAND DOLLAR VEHICLES WITH LESS THAN 8000 MILES- YOU REPLACE THE 4 LIFTERS AND GUIDE- THEN THEY COME BACK IN A THOUSAND MILES.. THEN YOU REPLACE ANOTHER 4 LIFTERS AND GUIDES- SAME AFM LIFTERS THAT HAVE BEEN USED FOR MANY YEARS.. MINE HAVENT BEEN COLLAPSED . THEYRE UNLOCKED, COME OUT IN 2 PIECES- AND THE INTERNAL PIN IS DAMAGED
need to update Doc# 5598932 to read correctly as it only has you replace lifters as needed see below Note:
◦When reusing valve lifters (1), install the lifters to their original locations.
◦Only replace the valve lifters (1) and valve lifter guides (2) as required.
◦If camshaft replacement is required, the valve lifters (1) must also be replaced
#19-NA-218: Ticking Noise from the Engine – (Dec 16, 2020) Document ID: 5405314 needs to been updated to require the tray replacement. If you go by the bulletin they are not on the parts list provided by si.