Chrysler Pacifica 2022–2023 — technical service bulletin
Bulletin 9100132 · NHTSA communication 10247902 · issued Feb 9, 2023
Technical service bulletin
communication type
Back Over Prevention
component
2022–2023
model years
15
vehicle entries
Official summary
ENGINE ASSY - 3.6L AUTO TRANS Before replacing the engine due to an abnormal ticking noise, please check that the INTAKE Hydraulic Lash Adjusters are not "collapsed". If a collapsed INTAKE HLA is found, replace all INTAKE HLAs on the suspect cylinder head. The noise can occur at low or high RPMs, and at low or high temperatures. There are no Diagnostic Trouble Codes (DTC)s present. CAUSE: INTAKE Hydraulic Lash Adjuster may have a manufacturing issue that can cause the plunger to stick, generating valvetrain noise.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.