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GMC C4500Model year report

2003 GMC C4500 Problems

Complaints
6filed with NHTSA
Median mileage
129,500miles, 4 complaints with mileage
Recalls
1campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

Sources: NHTSA records for the 2003 GMC C4500 (complaints, recalls, investigations). Report an error

NHTSA recorded 6 consumer complaints for the 2003 GMC C4500. The part named most often is brakes, with 2 complaints (33% of the total), followed by transmission and drivetrain (2) and engine cooling (1). 4 of the complaints include a mileage, and 25% of those were filed for vehicles with under 50,000 miles; the median is 129,500 miles. NHTSA lists 1 recall campaign and 88 technical service bulletins for this model year. Brakes complaints overlap with 4 technical service bulletins filed under the same part. Transmission and drivetrain complaints overlap with 7 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Brakes: “My engine stalled due to contaminated fuel. With the key still in the on position, I attempted to stop. I pressed the service brake pedal. The backup brake system did not operate. I repeated pressing the brake pedal two more times. I understood. I was closing the distance between my vehicle and the one in front of me approaching the traffic signal, red. The brake pedal switch failed to initiate the relays and pump. Consequently, the vehicle had practically no brakes other than the drum brake by hand brake handle. I applied the hand brake. …”

NHTSA complaint #10095888, filed 2004-10, 79,000 miles

Transmission and drivetrain: “Vehicle was experiencing a problem with grease from the rear end leaking onto the left rear wheel braking system. This caused loss of braking in that wheel. Dealer replaced the grease seal with an upgraded seal six times, problem recurred. Real grease seal was replaced. The driver side brake caliper bolt fell out causing the caliper to rub the inside of the inner dual wheel causing damage to the caliper and wheel.”

NHTSA complaint #10111189, filed 2005-03, 3,300 miles

Engine cooling: “Vehicle experienced sudden stalling at various speeds when on the road. Taken to the dealer 10 times for checkup, but the cause was still undetermined.”

NHTSA complaint #10114889, filed 2005-03

Exterior lighting: “When the vehicle reached a speed of 50 MPH, the head lights dimmed. When the lights are adjusted properly, they do not allow the proper light on the road at speeds greater than 50 MPH. Dealer did not see the problem. Scc”

NHTSA complaint #10012110, filed 2003-03

Mileage when problems were reported

25% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 79,000 and 180,000 miles.

25%0–100%10–250%25–500%50–7525%75–1000%100–15050%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (4 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 129,500 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

200320042005220062010
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Recalls and investigations

Recall details for the 2003 GMC C4500 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 88 on record; the latest 10 are shown.

See all 88 bulletins →

Other model years of the GMC C4500

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20036129,5001———Not enough data

All GMC C4500 model years

Frequently asked questions

How many NHTSA complaints does the 2003 GMC C4500 have?

NHTSA recorded 6 consumer complaints for the 2003 GMC C4500 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2003 GMC C4500 is reported most often?

Brakes is named most often, in 2 complaints (33% of the total), followed by transmission and drivetrain with 2.

Has the 2003 GMC C4500 been recalled?

NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

At what mileage are problems with the 2003 GMC C4500 reported?

Among the 4 complaints that include a mileage, the median is 129,500 miles and the middle half falls between 79,000 and 180,000 miles; 25% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.