What are the most common Jeep Grand Cherokee problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2004 Jeep Grand Cherokee has 17 documented issues. The most frequently reported are: 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling, 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First, 2004 545RFE Intermittent Low-Line-Pressure or Gear-Ratio DTCs — Check TCM Build Date. Of these, 6 are rated critical and should be addressed promptly.
Is the Jeep Grand Cherokee reliable?
The 2004 Jeep Grand Cherokee has 17 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 6 issues are rated critical: 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling and 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First and 2004 545RFE Intermittent Low-Line-Pressure or Gear-Ratio DTCs — Check TCM Build Date and 1999-2010 Airbag Light Plus Horn or Wheel-Control Faults - Scan SRS First and Rear-Mounted Fuel Tank Rupture and Fire Risk in Rear Impacts (Recall 13V-252 / Campaign N45) and Internal Radiator Transmission-Cooler Failure Cross-Contaminating ATF and Coolant ('Pink Milkshake'). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Jeep Grand Cherokee problems?
Repair costs for known Jeep Grand Cherokee issues range from $0 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling, typically costs $80-$350 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 1999-2004 Jeep Grand Cherokee 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling?
The crankshaft position sensor (CKP) on the 4.7L (and 4.0L) Grand Cherokee commonly fails from heat-soak: it works when cold but its internal resistance rises when hot, so the PCM loses the crank signal and the engine won't restart until it cools 30-60 minutes, or it stalls rando… Repairs typically run $80-$350. Severity: high.
What is the 1999-2004 Jeep Grand Cherokee 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First?
A cracked cylinder head or failed head gasket can produce coolant loss, overheating, rough running, or cylinder leakage on a 4.0L Grand Cherokee, but the previous card treated every 1999-2004 vehicle as if its installed casting and failure mode were already known. Heads may have… Severity: high.
What is the 2004 Jeep Grand Cherokee 2004 545RFE Intermittent Low-Line-Pressure or Gear-Ratio DTCs — Check TCM Build Date?
DaimlerChrysler TSB 08-016-05 describes an internal TCM circuit fault that may cause an intermittent low-line-pressure or gear-ratio DTC and limp-in on a specific 2004 WJ/WG Grand Cherokee population. The vehicle must have the 545RFE (sales code DGQ), a 4.7L or 4.7L High Output e… Severity: high.
What is the 1999-2010 Jeep Grand Cherokee 1999-2010 Airbag Light Plus Horn or Wheel-Control Faults - Scan SRS First?
The clockspring is a plausible shared point when a Grand Cherokee has an airbag warning together with a failed horn, cruise control, or steering-wheel buttons. Factory wiring confirms that those circuits pass through the clockspring/steering-control assembly. That symptom combina… Severity: high.
What is the 1994-2004 Jeep Grand Cherokee Rear-Mounted Fuel Tank Rupture and Fire Risk in Rear Impacts (Recall 13V-252 / Campaign N45)?
For the ZJ (1993-1998) and WJ (1999-2004) Grand Cherokee, Chrysler mounted the plastic fuel tank behind the rear axle with little rear-structure protection. NHTSA and the Center for Auto Safety documented that these vehicles were far more likely to suffer a fatal post-crash fire… Repairs typically run $0-$0. Severity: high.
What is the 1999-2004 Jeep Grand Cherokee Internal Radiator Transmission-Cooler Failure Cross-Contaminating ATF and Coolant ('Pink Milkshake')?
On the WJ the automatic-transmission fluid cooler is integrated inside the radiator end tank. As the radiator ages the internal cooler barrier fails, allowing engine coolant and ATF to intermix under pressure. The result is a pink/tan 'strawberry milkshake' in both the transmissi… Repairs typically run $400-$1,800. Severity: high.
What is the 2000-2004 Jeep Grand Cherokee Power Window Regulator Failure Causing Glass to Drop Into Door?
WJ Grand Cherokees are well known for failing power window regulators, often due to broken plastic guides, cable failures, or regulator track issues. Owners frequently report a loud pop followed by the window dropping into the door or becoming crooked and inoperative. Failures ar… Repairs typically run $180-$500. Severity: medium.
What is the 1999-2004 Jeep Grand Cherokee Powertrain Control Module (PCM) Failure Causing Intermittent Warm-Weather Stalling and No-Start?
The WJ PCM (engine computer) can develop internal faults — often heat/temperature-related micro-cracks or solder failures — that cause intermittent stalling, hard-to-diagnose no-starts and driveability problems that come and go with ambient temperature. A well-known WJ case: a 20… Repairs typically run $300-$1,000. Severity: medium.
What is the 1999-2004 Jeep Grand Cherokee In-Tank Fuel Pump Module Failure and Fuel-Level Sending Unit Fault (No-Start / Erratic Gauge)?
The combined in-tank fuel pump / level-sender module on the WJ Grand Cherokee wears out with age: the pump loses pressure (needs ~49-58 psi) causing crank-no-start or hot stalling, while the integrated sending-unit float/resistor card fails causing erratic or stuck fuel-gauge rea… Repairs typically run $250-$800. Severity: medium.
What is the 1994-2004 Jeep Grand Cherokee Body/Unibody Rust-Through — Rocker Panels, Rear Wheel Arches and Floor Pans?
ZJ (1993-1998) and especially WJ (1999-2004) Grand Cherokees in salt/rust-belt climates are notorious for corrosion of the rocker panels, rear quarter/wheel-arch lips, floor pans and rear cargo area. Because these are unibody structures, the rot is both cosmetic and structural, a… Repairs typically run $500-$3,000. Severity: medium.
What is the 2000-2010 Jeep Grand Cherokee Blend Door / HVAC Actuator Failure Causing No Heat, No A/C Control, or One-Side Temperature Mismatch?
A very common Grand Cherokee problem across both WJ and WK generations is failure of the HVAC blend doors or their actuators. Owners report loss of temperature control, air stuck on hot or cold, clicking behind the dash, or dual-zone systems blowing different temperatures side to… Repairs typically run $250-$1,800. Severity: medium.
What is the 1999-2004 Jeep Grand Cherokee Instrument Cluster Gauge Dropout and Dimming Failure (WJ)?
The WJ-generation Grand Cherokee instrument cluster is a well-known weak point. Owners report gauges that suddenly stop working, read erratically, or dim so far they're unreadable even with the dash brightness turned all the way up. Causes range from loose/corroded cluster connec… Repairs typically run $150-$600. Severity: medium.
What is the 1999-2004 Jeep Grand Cherokee NV247 Quadra-Trac II / NV242 Transfer Case Fluid Leak, Overheat and Bind/Chatter?
The WJ's on-demand NV247 (Quadra-Trac II) and full-time NV242 (Selec-Trac) transfer cases suffer fluid leaks from the case split-line, rear output slip-yoke seal and a plugged vent, plus a pressure/heat issue: many 1999 units were filled with the WRONG fluid from the factory. Low… Repairs typically run $100-$900. Severity: medium.
What is the 1999-2009 Jeep Grand Cherokee Exhaust Manifold Bolt Failure and Manifold Leak on 4.7L V8?
The 4.7L V8 used in Grand Cherokee models is widely reported to develop broken exhaust manifold bolts or warped manifold sealing surfaces, especially after repeated heat cycles. Owners typically notice a ticking noise on cold start that may quiet as the engine warms, sometimes mi… Repairs typically run $400-$1,400. Severity: medium.
What is the 2000-2010 Jeep Grand Cherokee Front Brake Rotor Warping / Pulsation and Premature Brake Wear?
Repeated owner complaints describe front brake pulsation, steering wheel shake under braking, and rotors that develop thickness variation or hot spots well before expected service life. This issue is especially well known on WJ models, though WK owners also report premature rotor… Repairs typically run $300-$900. Severity: medium.
What is the 1994-2004 Jeep Grand Cherokee 4.0L Oil Filter Adapter Housing O-Ring Leak (Frequently Misdiagnosed as Rear Main Seal)?
The 4.0L inline-six routes oil through an aluminum oil-filter adapter housing bolted to the block; its O-rings harden and leak with age, dripping oil down the rear/side of the block. Because the oil migrates rearward, it is very commonly misdiagnosed as a rear main seal or oil-pa… Repairs typically run $100-$400. Severity: low.
What is the 1994-2004 Jeep Grand Cherokee Front Blower Motor Resistor Failure — HVAC Fan Works Only on High Speed?
The HVAC blower-motor resistor on ZJ (1993-1998) and WJ (1999-2004) Grand Cherokees commonly burns out, leaving the fan working only on the highest setting (which bypasses the resistor). A worn blower motor drawing excess amperage cooks the resistor, and the connector often overh… Repairs typically run $40-$250. Severity: low.