Recommendation For Transmission Cooler on 2008 Chevrolet Silverado 1500 LS With 4.8 Liter V8

Question

Question:

Hi, I have a 08 silverado 1500 ls V8 4.8 liter, it has 20 inch rims and 33 inch tires. When towing my boat around town my transmisson temp goes up to 215 degrees. I also tow my boat from Miami, FL to Fort Myers several times a year during the summer. Its about 160 miles of non-stop 60 mph sometimes 65mph. On one hot day the tranny temp got as high as 230. My dash lights started to flash advising too hot. I do have a factory transmisson cooler which is installed on the top right of radiator. Its about 2inch wide and 12 inches in height. What cooler do recommend for my truck? I would be removing the factory cooler to install the cooler you recommend. Thanks,

asked by: L. D

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Expert Reply:

Ideally you want to keep the temperature of the transmission fluid in the 160 to 200 degree range. You cannot cool transmission fluid too much.

Transmission coolers are universal fit items so you will want to measure the space you have in front of your air conditioning condenser or your radiator to see what size cooler will fit your 2008 Chevrolet Silverado 1500.

Installing an additional transmission cooler in-line with the current transmission cooler would help in cooling the transmission fluid, so I would not recommend to remove your current factory transmission cooler.

The item you selected, the Derale Series 8000 Transmission Cooler Kit, part # D13502, would be a good choice as it will work great with your 4.8 liter V8 engine. It measures 11 inches wide x 7-1/4 inches tall x 7/8 inch deep. It is a Class II rated cooler which means it is rated for towing up to 3,500 lbs. If you wanted to go larger you can go to the Derale Series 8000 Transmission Cooler Kit, part # D13503. It is rated as a Class III cooler which is rated for towing up to 6,000 lbs. It measures 11 inches wide x 8-3/4 inches tall x 7/8 inch deep.

To install either cooler on your Chevrolet Silverado you will also need the Derale Radiator Adapter Fitting, part # D13035. This fitting will allow you to connect your aftermarket transmission cooler to your 5/16 inch transmission lines.

I am including links to a couple of FAQ pages on transmission coolers and a link to a video review of the # D13503 transmission cooler.

expert reply by: Jeff D

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Answer 1

Both the Derale transmission coolers you mentioned would work great installed on your 2010 Chevy Silverado with a 4.8 liter V8. The part #D13960 is the more efficient style of cooler as it has a stacked plate whereas the #D13950 is a plate and fin…

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Answer 2

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

You are a little on the warm side for your transmission fluid. If you can keep it under 200 degrees you will have the max life out of it. That being said transmissions really start to go downhill at 260 degrees. The Derale cooler part #D13503 with…

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Answer 7

When comparing the Flex-a-lite Transmission Cooler #FLX400117 to the similar Derale Series 8000 Transmission Cooler #D13502, there are very few differences between them. Both have an aluminum construction, include all hardware needed, and are…

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Answer 8

Hey Jopseph, I went ahead and spoke with Pace Edwards and was able to get those rails added for you! So, for your Pace Edwards Full-Metal JackRabbit Retractable Hard Tonneau Cover #311-FMC3250 you're going to need the Replacement Standard Rails…

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Answer 9

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Answer 10

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Answer 11

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Answer 12

The brake controller adapter for the Tekonsha brake controller #39523 is different from the 2002 Chevy Tahoe to the 2016 Chevy Silverado. The correct adapter for the 2016 Chevrolet Silverado 1500, 2500, and 3500 is the #3016. The adapter that fits…

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Recommendation For Transmission Cooler on 2008 Chevrolet Silverado 1500 LS With 4.8 Liter V8

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