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MANUFACTURER DOCUMENTATION

Jeep Grand Cherokee

WL 3.6L filler-tube leak diagnosis with build limit.

Documented years: 2023

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Diagnostic guides

2023 Jeep Grand Cherokee P0456: prove a filler-tube leak before replacement

Use the initial SLVT, weld-area finding and repeated leak test to evaluate a filler-tube estimate.

Manufacturer bulletins

The diagnostic guides above cite the supporting manufacturer documents. See the sources below for their scope.

Sources and scope

  1. 14-007-23 — filler-tube diagnostic branch (August 11, 2023)

    FCA US LLC · Checked 2026-10-30

  2. STAR S2325000006 — diagnostic experience note (June 2023)

    Stellantis US LLC · Checked 2026-10-30

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