Complaint 2176185

2020 GMC ACADIA • ENGINE • incident Jan 31, 2026

Crash
No
Fire
No
Injuries
0
Deaths
0
Complaint ID
2176185
Make
GMC
Model
ACADIA
Model Year
2020
Component
ENGINE
Incident Date
Jan 31, 2026
Date Received
Feb 12, 2026
Data As Of
Sep 1, 2026

Complaint Summary

ENGINE

Owner Narrative

Rear heater line leak detected during evaluation of engine code P01F0 and empty expansion tank was noted. There was never any puddle in my garage prior to the incident, and nothing detected after the fact either. Pictures included demonstrate a leak at the double-crimp near the farthest rear point of the vehicle. The other hose behind the drip photo was also leaking at the crimp under the secondary piece of hose insulation. The design of the system requires replacement of the entire heater line assembly (4 pipes, associated hoses and fittings) traversing the entire length of the vehicle. I was told this is a dealer-only part.

Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.