⚠️ Jeep manufacturer position
TechAuthority provides generation-specific tank module access (often under rear seat on WK2) or tank removal on WL. Follow HV disable on 4xe before fuel service.
Vehicle information
| Make | Jeep |
|---|---|
| Model | Grand Cherokee |
| Market status | Sold new in the US 1993–present |
| Body styles | SUV |
| Generations | WL (2022+); WK2 (2011–2021); earlier ZJ/WJ/WK |
| Engine options | Gasoline: 3.6L V6; 5.7L Hemi V8; 2.0L turbo I4 (4xe); others by year Diesel: 3.0L EcoDiesel V6 (select WK2/WL years) Hybrid: 4xe plug-in hybrid (gasoline tank plus battery) |
| Fuel tank capacity | 24.6 gal (93 L) typical; varies by generation |
| Fuel system | Gasoline MPI/GDI by engine; EcoDiesel common rail; 4xe isolates HV per OEM before fuel work |
| Access method | Varies by generation — rear seat access or tank drop |
| Anti-siphon | Yes |
| Service portal | Stellantis TechAuthority / Mopar |
Misfuel risk High
EcoDiesel and Hemi trims both appear in US fleets. Gasoline-in-diesel on EcoDiesel is severe; diesel-in-gasoline on V6/Hemi is also harmful if started.
If the engine was not started
Identify powertrain from fuel door label. Do not start. Drain and flush per generation-specific manual.
If the engine was started
Scan for fuel-related DTCs; EcoDiesel may need HPFP/injector service; 4xe may require hybrid readiness relearn after repair.
Access procedure
- Relieve fuel system pressure per OEM service information (disconnect pump fuse/relay or use scan tool as specified).
- Disconnect the negative battery cable.
- Access the fuel pump module per OEM (rear seat service hole, trunk floor, or cargo area—varies by model).
- Disconnect fuel lines and electrical connectors at the pump module using line-specific tools.
- Drain the tank into approved Class 3 containers; bond/ground per OSHA 29 CFR 1910.106.
- Inspect the tank interior; replace in-tank filter if contaminated or per OEM.
- Reinstall the pump module with a new seal; reconnect lines and wiring.
- Refill with the correct fuel grade; prime the system and check for leaks before road test (Jeep procedure).
Notes
- WL three-row may differ tank routing from two-row—use VIN-specific manual.
Related models
Frequently asked questions
Which Grand Cherokees have EcoDiesel?
Stellantis offered 3.0L EcoDiesel on select WK2 and WL model years—not every trim. Confirm with window sticker or VIN lookup.
How do I service fuel on a Grand Cherokee 4xe?
De-energize the high-voltage system per TechAuthority before opening fuel lines. The gasoline tank feeds the 2.0L turbo engine.
Can I access the pump without dropping the tank?
Many WK2 models allow under-rear-seat module access; WL may differ—follow OEM for your year.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
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