There are 2 owner-reported electrical system complaints for the 2009 GMC Envoyin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
HEADLIGHT DRIVE MODULE (HDM) CONTROLS BOTH LOW BEAM HEADLIGHTS. THIS RELAY HAS FAILED ON ME TWICE IN LESS THAN A YEAR, AT NIGHT RESULTING IN GOING DOWN THE ROAD WITH NO LIGHTS AND UNABLE TO SEE. VEHICLE WAS IN MOTION ON A HIGHWAY GOING 55 MPH AT NIGHT
TL* THE CONTACT OWNS A 2009 GMC ENVOY. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 30 MPH, AN ABNORMAL NOISE EMITTED FROM UNDERNEATH THE RIGHT PASSENGER'S SEAT. THE PROBLEM RECURRED MULTIPLE TIMES. THE VEHICLE WAS TAKEN TO THE DEALER, WHERE IT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000. ..UPDATED 10/28/16 *BF UPDATED 03/19/15*BF....UPDATED 04/28/15*JB..UPDATED 10/04/16 *BF UPDATED 10/31/16.*JB UPDATED 9/19/2017*CN
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 May 4, 2026