2003 Chevrolet Suburban: common problems and reliability
· GMT800One of the worst Suburban years.
One of the Chevrolet Suburban years to avoid. All Suburban years
524 owner complaints, most about service brakes. 8 recalls.
Should I buy a 2003 Suburban?The 2003 Chevrolet Suburban has 524 owner-filed NHTSA complaints and 8 recalls on record. The most-reported areas are service brakes and electrical system. Owners most often flag power steering pump and system leaks or failures: owners describe the power steering as a fast way to kill the engine if neglected, note hydroboost as an additional leak point, and say the pump is a common failure.
Safety record for the 2003 model year
Source: NHTSA complaints and recalls filed for 2003 Chevrolet Suburban vehicles (US, public record).
The Year Score compares this year with other Suburban years only. How we score it
Is 2003 a good year for the Suburban?
Across the 31 Suburban model years we track, complaint volume runs from 44 (2020) to 757 (1999). With 524 complaints, the 2003 Suburban sits above the model's median of 229.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
Recalls affecting the 2003 Suburban
fuel system, gasoline
Campaign 06E043000CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.
seat belts:rear/other
Campaign 05V163000ON CERTAIN CREW CAB PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE 2ND ROW CENTER OCCUPANT SEAT BELT ROUTING MAY MAKE IT DIFFICULT TO POSITION THE LAP PORTION OF THE SAFETY BELT LOW AROUND THE HIPS OF OCCUPANTS, ESPECIALLY SMALLER OCCUPANTS, SEATED IN THIS POSITION. APPROPRIATE USE OF A CHILD SEAT OR BOOSTER SEAT, AS RECOMMENDED FOR SMALL CHILDREN, DOES IMPROVE THE FIT CONDITION FOR THIS USER GROUP. IN ADDITION TO INSTRUCTIONS ON PROPER INFANT AND YOUNG CHILD RESTRAINT (WITH CHILD SEATS OR BOOSTERS), SPECIAL VERBIAGE FOR RESTRAINING OLDER CHILD IS INCLUDED IN THE OWNER'S MANUAL. ALSO, THE SUGGESTED SEAT BELT FIT/ROUTING FOR ADULTS, IRRESPECTIVE OF SEATING POSITION, IS DESCRIBED IN THE OWNER'S MANUAL TEXT.
exterior lighting
Campaign 06E026000CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.
fuel system, gasoline:storage:tank assembly
Campaign 03V019000ON CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES, VEHICLES, DURING A 30 DEGREE LEFT ANGLE FRONTAL IMPACT OF SUFFICIENT SEVERITY, A TEAR COULD DEVELOP IN THE MID-FRAME CROSS MEMBER AT ITS ATTACHMENT TO THE LEFT FRAME RAIL. IF THE MID-FRAME CROSS MEMBER TEARS DURING FRONTAL IMPACT AND PRODUCES A SHARP EDGE, CONTACT OF THE SHARP EDGE WITH THE FUEL TANK COULD RESULT IN A PUNCTURE OF THE FUEL TANK AND POSSIBLE FUEL LEAKAGE.
Show 4 more recalls
service brakes, hydraulic
Campaign 04V045000CERTAIN SPORT UTILITY VEHICLES, PICKUP TRUCKS, AND PASSENGER VANS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 135, ?PASSENGER CAR BRAKE SYSTEMS.? SOME OF THESE VEHICLES WERE PRODUCED WITH AN OUT-OF-SPECIFICATION BRAKE HYDRO-BOOST HOUSING RELIEF VALVE BORE.
structure:body:door:hinge and attachments
Campaign 03V037000CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 214, "SIDE IMPACT PROTECTION." THESE VEHICLES ARE BUILT WITH FOUR WELDS ON THE REAR DOOR UPPER HINGE. ON SOME OF THESE VEHICLES, ONE OR TWO OF THE WELDS MAY NOT BE TO SPECIFICATION.
structure
Campaign 03V094000CERTAIN PICKUP TRUCK, VAN, AND MINI VAN CONVERSIONS EQUIPPED WITH SOUTHERN COMFORT BUILT RUNNING BOARDS THAT CONTAIN CERTAIN COURTESY LIGHTS MANUFACTURED BY AMERICAN TECHNOLOGY COMPONENTS, INC. THESE UNITS CONTAIN A COURTESY LIGHT OR LIGHTS THAT MIGHT OVERHEAT WHEN THE WIRE HARNESS IS EXPOSED TO EXCESSIVE MOISTURE AND ROAD SALT.
wheels:hub
Campaign 07E106000CERTAIN FEDERAL-MOGUL REPLACEMENT WHEEL HUB ASSEMBLIES WITH THE BRAND NAMES: NATIONAL, CARQUEST P/NOS. 515020, 515021, 515025, 515053, 515054, 515059, AND 515060, SHIPPED BETWEEN JANUARY 23, 2006, AND DECEMBER 20, 2007, SOLD FOR LIGHT DUTY AND MEDIUM DUTY TRUCKS. THE INBOARD RETENTION NUT USED TO MAINTAIN HUB BEARING ASSEMBLY CAN LOOSEN RESULTING IN AN ABS LIGHT INDICATION, NOISE, AND/OR WHEEL SEPARATION.
What owners report on the GMT800 Suburban
Owners of the 2000-2006 GMT800 Suburban consistently describe it as a very reliable, cheap-to-own, and easy-to-work-on full-size SUV, with several owners reporting examples running near or past 300,000 miles.
- RecurrentPower steering pump and system leaks or failures
Owners describe the power steering as a fast way to kill the engine if neglected, note Hydroboost as an additional leak point, and say the pump is a common failure.
- Recurrent4L60E transmission weakness and need for regular fluid service
Owners call the 4L60E "made of glass" and stress fresh fluid regardless of appearance.
- RecurrentOil pressure sending unit failure causing false low readings
Multiple owners point to the sending unit as the cause of low oil pressure gauge readings and note it is cheap and easy to replace.
- IsolatedIntake manifold gasket coolant leaks on the 5.3L
One owner identifies this as a known issue for 5.3s of this era and recommends checking it first.
- IsolatedTransfer case "pump rub" wearing a hole in the case
One owner describes it as a 200-300k mile concern with a roughly $100-200 DIY fix.
Owner insights for the GMT800 Suburban. Read the full GMT800 owner report.
Typical used price
Used Suburban listings typically run $17,061–$41,246.
Other Suburban model years
Compare every Suburban year side by side to see how 2003 ranks against the rest.
Compare the Suburban against its rivals
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