2003 Chevrolet Suburban 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Chevrolet Suburban 2500
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
2003 Chevrolet Suburban 2500 ProblemsPower Brake Units May Leak Fluid From Hydro-Boost Unit
Power brake systems using "hydro-boost" may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. Replacement of the hydro-boost unit is the common repair to correct this concern.
The sunroof may stop working for various different reasons. Our technicians tell us it is often better to replace the complete sunroof assembly than to try and repair the old one.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
2003 Chevrolet Suburban 2500 QuestionsWhy do the Speedometer stop working (4 answers)
My speedometer stop working on me
Ever since the dealer replaced my instrument cluster, the engine light will flash above 65 MPH if driven at a constant speed (random misfire). If I drive at various speed going from 60 to 70 back and forth, its fine. I took it to the dealer (another), and they can not find anything wrong with it....
INSTALLED A NEW TRANSFER CASE AND THE CODE THAT COMES UP IS CO306-MOTOR A/B CIRC MALFUNCTION. CO 321 T/C LOCK CIRC FAULT .... AND CO 327 ENCODER CIRCUIT MALFUNTION. THE SUV JUMPS AND HOPS ALMOST AS IF THERE ARE DIFFERENT SIZE TIRES OR THE WRONG GEAR RATIO IN IT . USEING THE SCANNER TO ACTIVATE TH...
2003 Chevrolet Suburban 2500 RecallsRear Seat Belt for Smaller Passengers May Not Fit Correctly
The second row center seat belt routing may make it difficult to position correctly on smaller passengers. If the seat belt rides up to fit around the abdomen, the risk of internal injury is increased in a crash. Dealers will cut the guide loop, remove a portion of the loop, and the remaining sides should be folded over and secured with a retainer. The recall began July 21, 2005. The GM recall number is 05037.
The hydro-boost housing relief valve bore may be out of specification. The seal may fracture as a result, which may reduce braking assist and slightly increase the steering effort while braking. Under certain conditions, more braking effort will be required to stop the vehicle. Dealers will replace the hydro-boost relief valve. The recall began June 18, 2004. The GM recall number is 04004.
The courtesy lamps on affected running boards may overheat when exposed to moisture and road salt. Overheating may cause the lamps and boards to melt or start a fire. Dealers will replace the wiring harness for these running boards.