1999 Jeep Grand Cherokee Problems: 12 Known Issues
1999 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Jeep Grand Cherokee has 12 documented known issues, with 4 rated critical. The most serious are 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First, 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling ($80-$350 repair), 1999-2010 Airbag Light Plus Horn or Wheel-Control Faults - Scan SRS First and Internal Radiator Transmission-Cooler Failure Cross-Contaminating ATF and Coolant ('Pink Milkshake') ($400-$1,800 repair). Across all issues with published estimates, repair costs range from $40 to $3,000. DIY maintenance guides at au7o.io.
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All 12 Known Issues
NHTSA Recalls15 recalls
ELECTRICAL SYSTEM:IGNITION:SWITCH
This defect can affect the safe operation of the airbag system. Until this recall is performed, drivers should adjust their seat to allow clearance between the driver's knee and the ignition key, and remove all items from their key ring, leaving only the vehicle key. Chrysler Group LLC (Chrysler) is recalling certain model year 2005-2007 Jeep Grand Cherokee vehicles manufactured February 11, 2004, to July 5, 2007, and 2006-2007 Jeep Commander vehicles manufactured January 31, 2005, to July 5, 2007. In the affected vehicles, the driver may accidentally hit the ignition key with their knee, unintentionally knocking the key out of the run position, turning off the engine.
POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
Chrysler Group LLC (Chrysler) is recalling certain model year 2005-2010 Jeep Grand Cherokee vehicles manufactured February 11, 2004, through March 9, 2010; and 2006-2010 Jeep Commander vehicles manufactured January 31, 2005, through March 10, 2010. A transfer case electrical failure may result in an unintentional shifting of the transfer case into the neutral position.
ELECTRICAL SYSTEM:IGNITION:MODULE
CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2010 CHRYSLER 300, DODGE CHALLENGER, CHARGER, JEEP COMMANDER, GRAND CHEROKEE AND DODGE RAM VEHICLES. THESE VEHICLES MAY HAVE BEEN BUILT WITH A WIRELESS IGNITION NODE (WIN) MODULE EXHIBITING A BINDING CONDITION OF THE SOLENOID LATCH.
SERVICE BRAKES, HYDRAULIC
CHRYSLER IS RECALLING CERTAIN MODEL YEAR 2010 CHRYSLER SEBRING; DODGE AVENGER AND NITRO; JEEP LIBERTY, COMMANDER AND GRAND CHEROKEE; AND MODEL YEAR 2009-2010 DODGE RAM TRUCK. THESE VEHICLES MAY HAVE BEEN BUILT WITH AN IMPROPERLY FORMED OR MISSING BRAKE BOOSTER INPUT ROD RETAINING CLIP.
EQUIPMENT
CHRYSLER IS RECALLING MODEL YEAR 2010 JEEP COMMANDER AND GRAND CHEROKEE VEHICLES. THEY MAY HAVE BEEN BUILT WITH AN IMPROPERLY MANUFACTURED REAR TRACK BAR.
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Frequently Asked Questions
What are the most common Jeep Grand Cherokee problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1999 Jeep Grand Cherokee has 12 documented issues. Documented issues include: 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First, 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling, 1999-2010 Airbag Light Plus Horn or Wheel-Control Faults - Scan SRS First. Of these, 4 are rated critical and should be addressed promptly.
Is the Jeep Grand Cherokee reliable?
The 1999 Jeep Grand Cherokee has 12 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: 1999-2004 4.0L Coolant Loss or Misfire — Confirm the Cylinder Head and Leak Path First and 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling and 1999-2010 Airbag Light Plus Horn or Wheel-Control Faults - Scan SRS First 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 $40 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
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 1999-2004 4.0L Grand Cherokee, but the installed casting and failure mode should not be assumed from the model year. Heads may have been replaced during th… Severity: high.
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 1999-2010 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 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 1993-2004 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 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. A plugged vent lets heat build pressure that pushes fluid past the seals. Many 1999 units were als… Repairs typically run $100-$900. 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 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 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 1999-2009 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 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 1994-1998 ZJ and 1999-2004 WJ 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 overheats… Repairs typically run $40-$250. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.