07 Tahoe Engine Hot Turn off A/C

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Mar 25, 2018 | 4:59 PM

Justin.marsh

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07 Tahoe Engine Hot Turn off A/C

Hey everyone I have 2007 Tahoe with 180,000 miles. The Engine Hot Turn off A/C message popped up last week sometime but the truck wasn’t hot at all. Actually just turned it on. So I ended up replacing the thermostat and sending unit and flushed and topped of the coolant. Everything was good as new until yesterday the message popped back up I also realized the oil life was reading zero but also just changed the oil maybe 50 miles ago so I rest it to 100% and drove a little longer and BaM both messages popped up again “Engine Hot” and “Change Enigne Oil Soon”

Any ideas on what’s going on????

Mar 27, 2018 | 5:56 AM

sfcjones

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Have you check and of the sensors or have someone to check for codes? That would be a source of some good info.

Dec 6, 2022 | 9:19 PM

Goldie Shulman

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Tahoe 2007 LTZ. Engine Hot / AC OFF Some Fixes + Question

Chevy Tahoe 2007 LTZ / about 100,000 miles.
Car had a NEW ENGINE installed about 2 years ago- at about 94,000 miles.

After that got repeated Engine Hot AC / Off warning. Temp gauge is flat on 0. But Fan Runs continuously. Engine is NOT actually hot. This was 18 months ago. SOLUTION THAT WORKED: Filed down a poorly placed sharp stud/bolt (that was cutting into the wiring). See youtube Below:

That worked well for 16 months. Then warning came up again. Temp gauge is again flat on 0 while the warning is on. The Fan is running continuously. Coolant full. Engine is NOT actually hot. Driven in the condition, eventually CHECK ENGINE LIGHT came on too. Repaired a coolant sensor that is close to the exhaust manifold and #1 sparkplug. fixed 'rotted pigtail’ wiring there. That bought us about 6 weeks.
See youtube Below: