Engine overheats at high speeds

Tiny
HASSAN1110
  • MEMBER
  • 2015 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 85,000 MILES
The engine temperature is normal at the low speed but the engine overheated on higher speeds. No error at the system and no coolant leak.
Sunday, August 5th, 2018 AT 9:03 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good afternoon.

I assume you mean it is overheating?

Two things come to mind.

1. Thermostat. It may not be totally open.

2. Radiator clogged with debris not allowing circulation at higher rpm.

Roy

https://www.2carpros.com/articles/engine-overheating-or-running-hot
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Sunday, August 5th, 2018 AT 2:25 PM

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