2003 Jeep Grand Cherokee Service and Repair Manual

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Covers all 2003 Grand Cherokee trims — Limited Sport Utility 4-Door, Overland Sport Utility 4-Door, Laredo Sport Utility 4-Door ·
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The 2003 Jeep Grand Cherokee was offered with two engines — the 4.0L I6 and the 4.7L V8 — across all three trims. It is matched to this exact year, so the specs and sequences are correct for your engine and trim.

Engines

  • 4.0L I6 (242 cu in), OHV
  • 4.7L V8 (287 cu in), SOHC

Trims

  • Laredo
  • Limited
  • Overland

Known issues on the 2003 Grand Cherokee. Six recalls are on federal record for this model year: a hydraulic service-brake fault where a loss of brake fluid can lower brake line pressure and increase stopping distance, a headlight defect where missing amber reflectors leave the vehicle poorly illuminated and can lead to a crash, a second headlight problem where decreased lighting visibility may result in a crash, a front-seat heater that can overheat and cause a fire or injury, an exterior-lighting fault where decreased lighting visibility may result in a crash, and a fuel-pump leak that could cause a fire in the presence of an ignition source. Owners have filed 889 complaints and Jeep has issued 70 technical service bulletins for the year. This manual carries the factory diagnostic and repair procedures behind each of those systems.

From a routine service interval to a control-module reflash or a hard-to-trace wiring fault, it keeps you on the OEM procedure and the correct specification for your specific 2003 Grand Cherokee.

NHTSA #06E02200013/03/2006Component: SERVICE BRAKES, HYDRAULIC

CERTAIN AFTERMARKET BRAKE HYDRAULIC MASTER CYLINDERS SOLD AS REPLACEMENT BRAKE CYLINDERS FOR CERTAIN FORD, DAIMLERCHRYSLER, AND JEEP PASSENGER VEHICLES. THESE BRAKE CYLINDERS WERE SOLD UNDER THE BRAN

Consequence

LOSS OF BRAKE FLUID CAN LEAD TO A DECREASE IN BRAKE LINE PRESSURE AND AN INCREASE IN STOPPING DISTAN

Remedy

AFFINIA (BRAKE PARTS, INC.) WILL REPLACE THE SUBJECT BRAKE HYDRAULIC MASTER CYLINDERS FREE OF CHARGE

NHTSA #06E02300013/03/2006Component: EXTERIOR LIGHTING:HEADLIGHTS

CERTAIN ANZO COMBINATION HEADLAMP ASSEMBLIES SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES. SOME COMBINATION LAMPS ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS WHICH FAIL TO CONFORM

Consequence

WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL

Remedy

ANZO WILL NOTIFY OWNERS AND REPLACE THE HEADLAMPS FREE OF CHARGE. THE RECALL BEGAN MAY 9, 2006. OW

NHTSA #09E02500011/05/2009Component: EXTERIOR LIGHTING:HEADLIGHTS

DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONF

Consequence

DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.

Remedy

DOPE, INC. WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S

NHTSA #09V11700009/04/2009Component: SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER

CHRYSLER IS RECALLING 103,409 MY 2001-2004 JEEP GRAND CHEROKEE VEHICLES WITH HEATED SEATS AND WITH CHRYSLER RECALL NO. 06V-197 COMPLETED (03-04 MY) OR SEAT HEATER ELEMENTS SERVICE REPLACEMENT (01-02 M

Consequence

OVERHEATING COULD POTENTIALLY CAUSE A FIRE OR INJURY.

Remedy

DEALERS WILL REPLACE THE FRONT SEAT HEATER ELEMENTS FREE OF CHARGE. THE RECALL BEGAN ON NOVEMBER 23

NHTSA #09E01200007/04/2009Component: EXTERIOR LIGHTING

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONF

Consequence

DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.

Remedy

SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE S

NHTSA #06E01100001/02/2006Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

CERTAIN AFTERMARKET AIRTEX ELECTRIC FUEL PUMPS INSTALLED FOR USE AS REPLACEMENT EQUIPMENT FOR CERTAIN 1997-2004 JEEP WRANGLER; 1997-2001 JEEP CHEROKEE; 1997-2004 JEEP GRAND CHEROKEE; AND 2000-2003 DOD

Consequence

IN THE PRESENCE OF AN IGNITION SOURCE, A FUEL LEAK COULD RESULT IN A FIRE.

Remedy

AIRTEX WILL NOTIFY ITS CUSTOMERS AND WILL REPLACE THE AFFECTED FUEL PUMPS FREE OF CHARGE. THE RECAL

TSB #11022026

Verify Reman part number availability. Order the "R" part number for all orders: Warranty, Mopar, customer pay and service contract. Order "68" part number for New unsold units only.

TSB #11010205

Plate - Planetary

TSB #10229256

KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC level part number. The "AB" NIC level will not program to these platforms. For all other platforms, if the "AB" NIC level will not program to the vehicl

TSB #10221686

KEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC level part number. The "AB" NIC level will not program to these platforms. For all other platforms, if the "AB" NIC level will not program to the vehicl

TSB #10220471

Mechanical rocker arm, intake, 1.7 ratio.

TSB #10191442

Mechanical rocker arm, intake, 1.7 ratio.

TSB #10191460

Valve Body. These may cause over drive cycling.

TSB #10175735

Charging System, Battery Diagnostic Tools and Warranty This information only bulletin discusses using the correct test equipment for testing batteries and charging systems, and also warranty reimbursement when battery replacements are neces

Showing the 8 most recent of 70 technical service bulletins on file with NHTSA.

20151028Component: VISIBILITY/WIPERCrash reportedFire reported1 injured

BLOWER ONLY COLD AIR ALL THE TIME, MECHANIC SAID VERY POPULAR ISSUE WITH THESE VEHICLES - SAFETY ISSUE

20070913Component: VEHICLE SPEED CONTROL:ACCELERATOR PEDALCrash reportedFire reported1 injured

TL*THE CONTACT OWNS A 2003 JEEP GRAND CHEROKEE. WHILE SHIFTING OUT OF NEUTRAL, THE VEHICLE SURGED FORWARD. THE CONTACT DEPRESSED THE BRAKE PEDAL WITH BOTH FEET, BUT THE VEHICLE FAILED TO STOP. THE

20180925Component: SEAT BELTSCrash reported2 injured

TL* THE CONTACT OWNED A 2003 JEEP GRAND CHEROKEE. WHILE AT A STOP LIGHT, THE CONTACT'S VEHICLE WAS REAR ENDED. AS A RESULT, THE CONTACT CRASHED INTO THE PRECEDING VEHICLE. THE DRIVER'S SIDE AIR BAG FA

20180925Component: AIR BAGSCrash reported2 injured

TL* THE CONTACT OWNED A 2003 JEEP GRAND CHEROKEE. WHILE AT A STOP LIGHT, THE CONTACT'S VEHICLE WAS REAR ENDED. AS A RESULT, THE CONTACT CRASHED INTO THE PRECEDING VEHICLE. THE DRIVER'S SIDE AIR BAG FA

20160211Component: AIR BAGSCrash reported2 injured

TL* THE CONTACT OWNED A 2003 JEEP GRAND CHEROKEE. WHILE DRIVING 25 MPH, THE VEHICLE SUDDENLY VEERED TO THE LEFT. THE VEHICLE DROVE INTO A DITCH AND LANDED IN A BUNCH OF TREES. THE AIR BAGS FAILED TO D

Showing the 5 most serious of 889 complaints filed with NHTSA.

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