DIC code

40

Asked by Dec 29, 2015 at 06:38 AM about the 2007 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

I have a 2007 chevy tahoe was driving about 10 mins and
noticed that the a light come on saying " ENGINE HOT A/C
TURNED OFF" and temp was all the way up to 260 highest
reading  turned truck off drove a little and turned heater
down and it went away and cooled down  but heater didnt
get warm

8 Answers

104,185

Car is overheating and its telling you to turn items off to prevent overheating here are things that will cause overheating that you may want to check....Could be the folliwing: The pump may not be leaking but it may not be moving the water through the system (Impellers may be broken) thermostat may not be opening, fan may not be coming on at the correct temperature (should be at about 210 to 220) you may need to flush the system. The antifreeze mix may not be correct (should be 50/50). You may have air in the system that needs to be bleed out. Defective radiator cap. Air vent could be clogged. The exterior of the radiator may be clooged with debris and may need to be cleaned.

2 of 2 people found this helpful.
Best Answer
40

The thing is that its about 20 degrees out side and not even runing 10 mins and going about 10 mph in snow

1 of 1 people found this helpful.
71,375

It sounds like you have low coolant, Check the coolant level.

4 of 4 people found this helpful.
47,765

Is the outside of the radiator packed full of snow due to going through drifts? Get lots of snow in the wrong place and they will heat up quick. Outside air temperature doesn't have much to do with it at 20 degrees.

1 of 1 people found this helpful.
47,765

I agree, if the heater is not putting out heat and the engine is hot, sounds like low coolant for one reason or another.

2 of 2 people found this helpful.
40

Okay thank you guys i will double check everything and get back with u guys

2 of 2 people found this helpful.
40

Plenty of fluid heater turns on and heats up just starts heating up quick and changed out thermostate a month a go

1 of 1 people found this helpful.
67,445

Check the coolant level in the radiator, not the plastic recovery tank unless you don't have a radiator cap. If it's full in the radiator it could be a defective thermostat. However if you overheated and the heater was blowing cold air you're low on coolant or there's air in the cooling system. When the computer detected the overheating it shut down the air conditioning. Air conditioning puts an additional load on the cooling system. The computer will shut down the air conditioning system under overheating conditions and full throttle operation. HTH. -Jim

1 of 1 people found this helpful.

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