Some owners of the most popular Chevrolet, GMC, Buick & Cadillac crossovers are finding smokey smells,  melted parts, and burn marks under the front power seats- and GM doesn’t know why.

The Condition – GM TSB / PIE0773

GM has released a new Technical Service Bulletin (PIE0773)  outlining how some customers have noticed a “smoke” smell from under the front power seats of their crossovers. Upon inspection, technicians confirmed the smell and noticed melted parts and burn marks near the height adjustment motor.

2024 Chevrolet Equinox RS in Radiant Red Tintcoat.
2024 Chevrolet Equinox RS in Radiant Red Tintcoat.

Burning & Melting Near Seat Adjustment Motor – Vehicles Affected

What’s Causing The Issue? PIE0773

GM Engineering admittedly doesn’t know what’s causing the problem.

For now, the TSB notes: 
GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be used to “root cause” the customer’s concern and develop/validate a field fix.

A specific repair is not addressed however we assume it requires replacing any damaged parts. However, since the root cause is unknown, the ultimate fix has yet to be implemented.

2023 GMC Terrain AT4 in Summit White with forrest in background
2023 GMC Terrain AT4 in Summit White with forest in background

What Do You Do If You Think This Applies To Your Vehicle?

Suppose you think this issue applies to your vehicle. In that case, if it’s listed above and you’ve smelled smoke or seen a burning or melted area under the seat near an adjustment motor-  immediately contact your servicing dealership. In any situation, if you smell smoke, with an electrical tinge or not, it’s always safe to stop your vehicle immediately and determine the area from which the smell originates. The service document does not address if a vehicle is safe to drive after experiencing a melted or burned height adjustment motor.

It’s also important to understand that this information comes from a service document intended for dealerships. No recall has been implemented and the number of vehicles that have had this issue is completely unknown. This document does not indicate a widespread problem or dangerous situation.

Stay tuned to for more updates and an ultimate resolution to this problem.