There are 1 owner-reported lighting complaints for the 2009 GMC Sierrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I RECENTLY PURCHASED A GMC SIERRA CREW CAB PICKUP . WHEN IT RAINS, THE RIGHT FRONT HEADLIGHT FOGS UP CREATING A HAZARD AS ON COMING TRAFFIC CANNOT SEE MY TURN SIGNAL. THE LEFT LIGHT DOES NOT FOG UP. NOW, THE LAW OF PHYSICS TELLS ME THERE IS A LEAK IN THE HEADLIGHT AND NATURALLY THE MOISTURE WILL CONDENSE ON THE COOLEST PART OF THE LIGHT WHICH IS THE GLASS . I HAVE WRITTEN GMC WITH THE COMPLAINT AND THEY WILL NOT ANSWER MY COMPLAINT. THIS IS A SAFETY HAZARD. MY NAME IS GAINES SMITH. TRUCK WAS PURCHASED AT HAFNER MOTORS, BATESVILLE MISS. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026