KNOWN FAULTS · Jeep

Known faults for the Jeep Gladiator (JT).

2020–2026 · Petrol / Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

3 known faults with sources

Engines: 3.6 V6 (Petrol)

Leaking oil filter housing and cooler on the 3.6 PentastarEngine

Engine / equipment: 3.6 V6 Pentastar: Jeep Grand Cherokee, Wrangler and Gladiator, Chrysler Grand Voyager and 300C, Lancia Thema and Fiat Freemont
Period mentioned: 2011 onwards
Symptoms: Oil spots under the car, oil on the block below the housing (in the engine’s “V”), frequent top-ups and, in serious cases, a low oil-pressure warning; sometimes coolant leaks too.
Possible cause described: The plastic housing that holds the oil filter and cooler sits in the middle of the engine, exposed to heat: with heat cycles it warps and cracks. Overtightening the filter cap also damages it. Chrysler revised the design in 2014, but leaks still occur.
Check for the garage: Look for oil in the centre of the engine and under the car; do not overtighten the filter cap. The usual repair is replacing the whole assembly (aluminium versions exist), removing the intake manifolds, with new gaskets.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Engines: 3.6 V6 (Petrol) · 3.0 V6 CRD (Diesel)

Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Diesel high-pressure pump, driveline and steering on the GladiatorKnown weak points

Engine / equipment: Jeep Gladiator JT (3.6 V6 and 3.0 V6 CRD)
Period mentioned: 2020 onwards
Symptoms: On the 3.0 diesel, the high-pressure fuel pump can fail and stall the engine (2021–2023); a rear driveshaft assembled without grease in the joint (2020); a gearbox park pawl that may not engage (2022); an instrument cluster that goes blank (2020–2024); power-steering pump wiring that can overheat and cause a fire even when parked (2021 onwards).
Possible cause described: Defects documented by US recalls (NHTSA 22V-767 and 23V-263 for the diesel pump, 19V-636, 22V-639, 24V-652 and 26V-363). European cars may have equivalent campaigns: check by VIN.
Check for the garage: Check campaigns by VIN; if the diesel stalls, check the high-pressure pump.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Engines: 3.0 V6 CRD (Diesel)

Applies if: Third-generation engine (from 2020): mainly the fuel-pump campaign and oil-pressure warnings.

EGR cooler and bearings on the VM 3.0 V6 diesel (EcoDiesel)Engine

Engine / equipment: VM Motori 3.0 V6 diesel (A630, “EcoDiesel”): Jeep Grand Cherokee and Gladiator, Chrysler 300C, Lancia Thema and Maserati Ghibli, Quattroporte and Levante
Period mentioned: 2011 onwards
Symptoms: Coolant loss, white smoke or combustion in the intake manifold (cracked EGR cooler); deep metallic knock and the oil-pressure warning (bearings); on engines from 2020, low oil-pressure warnings or a failing high-pressure pump shedding metal.
Possible cause described: According to mechanics and owners, the EGR cooler cracks from thermal fatigue (Chrysler recalled it) and the crankshaft bearings can fail from lugging at low revs or carbon in the oil passages. On the third generation (from 2020) there was a recall for the Bosch CP4.2 fuel pump. Maserati uses the same VM engine in its diesels.
Check for the garage: Check the EGR-cooler and pump campaigns by VIN; watch the coolant and oil pressure; with knocking or the oil warning, stop. Avoid lugging the engine at very low revs under heavy load.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.