Most common 2003 GMC Suburban problems
Share of the 5 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
GMC Suburban complaints by model year
Best Suburban years: 2001, 2003, 2002. Years to avoid: 1999, 1995, 1997, 1996. Compare all years →
2003 GMC Suburban recalls (1)
Structure
Certain 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.
Remedy: Dealers will replace the wiring harness on these running boards. Owner notification began March 7, 2003. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free…
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2003 GMC Suburban:
Parking brake failure
In a letter dated April 20, 2005, GM notified NHTSA that it had decided that defects that relate to motor vehicle safety exist in certain model year (my) 1999-2002 c/k 1500 series (pbr parking brake system) and my 2001-2005 c/k 2500 and 3500 series (trw parking brake system) pickups with manual transmissions.according to GM, some of these vehicles May have conditions that cause the friction linings to wear to an…
Parking brake failure
Odi's review of complaint data received since the close of ea04-011 revealed no indication that the investigation should be re-opened.more details can be found in the federal register notice enclosed in the dp05-009 public file.odi reserves the right to reopen the investigation in the future should conditions warrant.
Frequently asked questions
Is the 2003 GMC Suburban a good car?
Based on 5 owner complaints filed with NHTSA, the 2003 Suburban rates better than average: 95% fewer complaints than a typical year of the Suburban at the same age. It is one of the best Suburban years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2003 GMC Suburban?
The brakes — 2 complaints, 40% of all complaints for this model year, most often about antilock/traction control/electronic limited slip. Next are the wheels & tires (1) and steering (1).
How many recalls does the 2003 GMC Suburban have?
There is 1 recall for the 2003 GMC Suburban, the most recent from March 7, 2003 (structure). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the GMC Suburban?
The best years by complaints, compared at the same age, are 2001, 2003 and 2002. Years to avoid or approach with caution: 1999, 1995, 1997 and 1996. See the full GMC Suburban years comparison.
At what mileage do 2003 GMC Suburban problems happen?
The median mileage reported in complaints is about 30,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.