Misfire Due to Collapsed Lifter

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

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One Comment

  1. Brian Moriarty says:

    #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.

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