Running warmer than normal or poorly working AC?

[L31MaxExpress]

Just throwing this out there since it is warming up outside for summer. If any of that applies to you, check your fan clutch. I recently replaced the junk aftermarket unit with an OE GM severe duty clutch for the heavy duty cooling system optioned GMT400s. Clutch is working as designed, at 1,500 rpm with the ac on and the engine up to temp, it sounds nearly like a propellor powered plane and moving a massive amount of airflow with the 11-bladed fan it is spinning. It was 97F here today.

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[MalcolmEatmanGoode]

Do you have a part number?

 

[L31MaxExpress]

Do you have a part number?

That has a 2005 L31 350 Vortec in it. Now has a GM 154672 fan clutch.

 

[MalcolmEatmanGoode]

That has a 2005 L31 350 Vortec in it. Now has a GM 154672 fan clutch.

Would this van clutch work in the 96 K1500 with the L31?

 

[MalcolmEatmanGoode]

That has a 2005 L31 350 Vortec in it. Now has a GM 154672 fan clutch.

That has a 2005 L31 350 Vortec in it. Now has a GM 154672 fan clutch.

You are real knowledgeable in this area of AC, can I ask what your preferred compressor is for these trucks?

 

[L31MaxExpress]

Would this van clutch work in the 96 K1500 with the L31?

That is actually a heavy duty cooling setup factory clutch for a 96-2000 truck or suv. So yes it works well in a 96 K1500.

 

[L31MaxExpress]

Four Seasons 88947 has cooled the best for me in my 97 Express. I have used the 34" wide core OSC 4721 Condenser in several trucks.

 

[MalcolmEatmanGoode]

Four Seasons 88947 has cooled the best for me in my 97 Express. I have used the 34" wide core OSC 4721 Condenser in several trucks.

Do you think it is absolutely necessary to replace the clutch or would the 10 blade be enough as my clutch is fairly new... Also I was able to find the accumulator switch you recommmend. I was wondering if you have a write up on the adjusting procedure? I read on a different post where you turned your evaporator core into a block of ice! (Badass).