4 NHTSA owner complaints for the 2003 Chevrolet Silverado 2500HD mention the throttle body. Usable reported mileage (n=3) has a median of 72,862 mi. 4 replacement listings match this model year in our catalog.
Owner complaints whose text directly mentions this component.
Same vehicle, mapped category, part not named.
Replacement listings that match this model year.
These figures describe mileage reported in owner complaints submitted to NHTSA. They do not represent the failure rate of all vehicles.
A failing throttle body can cause sudden loss of power, stalling, or unexpected idle changes, which can affect control of the vehicle. Have those symptoms inspected promptly.
This describes how this component can affect control, stopping, cooling, or fuel containment. It is not a recall, not a statement that this vehicle is unsafe to keep driving, and not a generic list of unrelated automotive hazards.
4 NHTSA owner complaints for this model year mention the throttle body.
No additional related-system complaints were counted for this pair.
Among 3 direct-mention reports with usable odometer data, the median reported mileage is 72,862 mi.
25th percentile 60,000 mi; 75th percentile 147,000 mi. These figures describe mileage reported in owner complaints submitted to NHTSA. They do not represent the failure rate of all vehicles.
4 replacement listings match this model year in our catalog.
That match is an exact model-year row in the retailer fitment feed — not a guess from a similar vehicle. Confirm engine, drivetrain, and production date on the listing before buying.
When a catalog match exists, replacement listings for this model year are linked through parts.autotk.com. This page does not invent compatibility.
The replacement link only appears when the catalog feed has at least one compatible product for this exact model year.
Mechanically related parts include fuel pump. Similar symptoms can come from those parts or from the broader system, not only from a failed throttle body.
Use the related-component links on this page when those combinations are published. A system-category NHTSA report is not proof that this specific part failed.
Find replacement throttle bodies that match this model year in our catalog. We do not invent fitment.
Find replacement partsDirect mentions are NHTSA owner narratives that contain this component or an accepted alias. Related-system counts are complaints in a mapped category that do not name the part. They are never merged. Mileage statistics use odometer values from 1 to 400,000 miles. This is not a failure rate.