NHTSA Complaint #11715931 — 2020 CHEVROLET BLAZER

ELECTRICAL SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11715931
Vehicle	2020 CHEVROLET BLAZER
Component	ELECTRICAL SYSTEM
Date of Incident	January 1, 2026
Date Filed	February 5, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	ID

Consumer Description

Engine showing PO128 code. Steering Assist System reduced power. Engine fan constantly running. Engine temp on dash is stuck on the "C" mark, doesn't move. Thermostat and temp sensor replaced, issue continues. THIS IS A VERY COMMON PROBLEM ON GM VEHICLES WITH THE 3.6L AROUND THE 60,000 MILE MARK. GM NEEDS TO GET IT FIGURED OUT.

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