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Discussion Starter · #1 ·
The radiator in my 1990 Chevy V1500 Suburban sprung some leaks and I have been trying to get a correct replacement. Going around in circles as the part numbers listed in the original GM parts list do not match a correct height on an OME direct replacement. My radiator dimensions are 28 - 3/4 core width by 20 and 1/2 tank height. This GM part number 52479539 as listed in the GM parts list is too short at 19 inch core ( tank height). These are all over the internet and according to the GM part number they should fit but do not. Does anyone have a correct part number for an after market replacement? I assume that my Suburban was ordered with a Heavy Duty radiator for towing. The taller radiator seems to have been used in 3/4 and 1 ton trucks but I cannot find a part number that matches the taller tank radiators either. Keeps coming back around to a 19 inch tank. Thanks for reading this and for any help you can give. Dave.
 

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Was your GM parts lookup done with the VIN? Without the VIN there are several different ones listed, some ranging from originally being copper or aluminum, or with or without trans coolers. I happened to look since I work at a GM dealer.


These are the different GM numbers my catalog lists:

52479539 (Aluminum with trans cooler)
52450464 (Copper)
52477475 (Copper)
52478923 (Copper)
52479539 (Copper)
52481619 (Copper)
52481750 (Copper)

I imagine that in the aftermarket world they are all aluminum now but thats how the GM catalog listed them. I'm sure these cover different engine options too.
 

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‘01 Silverado 2500HD 8.1/Allison 5sp xcab long bed
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Yo, Dave. I feel your pain. I had the same issues with my ‘01 8.1L. The narrow core version is common everywhere. The correct size for mine is a 2” thick core. I had two delivered to my house and a third to a parts store and all of them, just over an inch thick, were damaged in shipment. Finally found the right one at a local radiator shop. Perhaps the worst problem, at least for me, was the oil/trans cooling line fittings in the tank have been changed from factory specs. I had to drill mine out in order to get it back online. Be careful.
 

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Discussion Starter · #4 ·
Was your GM parts lookup done with the VIN? Without the VIN there are several different ones listed, some ranging from originally being copper or aluminum, or with or without trans coolers. I happened to look since I work at a GM dealer.


These are the different GM numbers my catalog lists:

52479539 (Aluminum with trans cooler)
52450464 (Copper)
52477475 (Copper)
52478923 (Copper)
52479539 (Copper)
52481619 (Copper)
52481750 (Copper)

I imagine that in the aftermarket world they are all aluminum now but thats how the GM catalog listed them. I'm sure these cover different engine options too.
Thanks for the list. Here's the Vin. 1GNEV16K9LF105120.
 

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Yep the 52479539 number is the newest GM number that is used for your radiator but clearly isn't correct. I even went to the original paper parts manual from the early 90s we still have laying around to double check it. The original number was 3051137 and it's been superseded a few times.

3051137------->52457637-------> 52479539
 
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I'm going to include the paper parts catalog sheets from the 90s. It will show options for 1990 and 1991 and what options they fit. These are the original numbers at that time. I will also include pics of your option codes for your vehicles VIN. Like Cowboy was saying, you may need to call a radiator shop and see what they say and get creative with making one fit.

Yours does have heavy duty cooling V02 option code. Even looking at the part numbers with the V02 option code for heavy duty cooling system it's still the same part number (52479539) in the end. The highlighted page section in the paper catalog is the one that should denote your vehicle based off of the RPO codes.

RV1= 1500-(1/2 ton) RV2= 2500-(3/4 ton) RV3= 3500-(1 ton) to give you an idea of what those RV codes mean if you weren't sure.

Codes yours HAS that are needed in this case are, GT4-(axle ratio), C60-(has a/c), V02-(heavy duty cooling system), RV1-(1500 1/2 ton), and MD8-(automatic transmission)
It may not list the MD8 code in all listings but it's important that it says it's listed for an automatic, or "w/ A.T" as it might say.
 

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