2017 GMC Sierra 2500HD: Headlights are too dim
Common wear/failure (not a recall)
Symptoms
Owners of the 2017 Sierra 2500HD report: headlights are too dim. CarComplaints.com lists 2 owner complaints, average mileage 1,300 miles.
NHTSA has 3 owner complaints for the 2017 Sierra 2500HD in this area. Examples:
- NHTSA complaint ODI #11297243 (filed 01/05/2020): “Headlight on this truck are extremely horrible and unsafe at night time. the light output is worst then any other vehicle i have ever drove. gm needs to stand behind the issue and provide a solution…”
- NHTSA complaint ODI #11056076 (filed 12/22/2017): “The headlights on my new gmc sierra 2500hd denali are horrible and unsafe for driving at night. the 25 watt rating and 2,000 lumens on the oem hid bulbs do not provide adequate, safe lighting for operating my vehicle. i already hit a deer with my brand new t…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
LED DRLs are often integrated into the headlamp assembly, which may require bumper removal. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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