I've installed the cooling upgrade, and I want you to know it works great! We pull a 23ft RV trailer and with the new cooling upgrade, the engine stayed nice and cool! Thanks again for the great product and customer support! Terry N.
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From: Terry N.

1/31/2010 SSD-4900 is an excellent kit and more complete than one would expect!! The instructions were dead on too. I installed on a '95 Suburban K2500 with 196k miles. I had to grind the ALT bracket, but the entire install went flawlessly and when I...
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From: Hayes O.