2004 Denali gets hot when parked

swathdiver said:

Did you replace these parts because of the problem or did it start afterwards? Did you use GM parts or aftermarket?

If yours were mine I'd check the level and see if the system needed to be burped. Then I would take a closer look at the fan clutch.

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Reefdude84 said:

Hi I replaced these parts after the issue was already happening I got all the parts off of rockauto . I will look at system if needs burped the level in the reservoir has stayed the same so far been 6 months since I replaced all parts

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Reefdude84 said:

Hi I have a 2004 Denali that when I am in drive threw or parked more then 10 min starts to get hot ac will start to blow warm air and the temp will start to go over 210 I have replaced radiator. Water pump and thermostat with housing also the fan clutch while driving all is great ac nice and cold and engine at normal temps idles great still as well.

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Reefdude84 said:

Hi I have a 2004 Denali that when in drive thru or parked over 10min starts to get hot. ac will start to blow warm air and the temp will start to go over 210F.
I have replaced radiator. Water pump and thermostat with housing also the
fan clutch
while driving all is great ac nice and cold and engine at normal temps idles great still as well.

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Doubeleive said:

have pictures of the engine area with hood open?
and parts list of what you used from rockauto

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Fless said:

^^ Ditto on the pics and the parts list.

Are both the top and bottom fan shroud pieces in place?

When it happens has the engine temp been read with a scanner to see what the ECT is reporting?

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Marky Dissod said:

Same problem, first summer with my Z71. My tuner raised idle to 750RpM.
It worked for that summer. Before next summer came, deleted the mech clutch fan.
Replaced the mech clutch fan with a pair of electrical fans, tuner adjusted for them,
now it can idle in the hot sun all day with cold AC at 600RpM in Drive.

If you've misconceptions about tuning, an old GM TSB adds an electrical fan that
blows when the AC is demanded.
But electrical fans and tune are more fun, get better MpG, and will help my Z71 last longer ...

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