1991 GMC Transmission Cooler

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…

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…

The Derale Stacked Plate Transmission Cooler part #D51906 is one of the most efficient transmission coolers out there so this would be an excellent option that would work great. With that said you'll want the version of this that comes with the…

You can install a stack cooler in your vehicle. The Class ratings are there as a reference point to a hitch Class. For example if someone has a Class III hitch they can look at coolers, see a Class III and say, hey, I have a Class III hitch so this…

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…

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…

For the 4L80E transmission that is in your 2002 Chevy 2500HD Silverado we have supplemental transmission coolers that would work great in conjunction with the factory cooler or as a stand alone cooler if you are looking to bypass the factory cooler.…

In order to reduce the transmission fluid temperatures in your 2014 Chevy Silverado 1500, I recommend using a transmission cooler like the Derale Series 8000 Plate-Fin Transmission Cooler Kit part #D13504. Generally speaking, the best transmission…

The transmission cooler part #D13504 would be exactly what you need. This is a large cooler that would work well for your 2007 GMC Yukon Denali. I attached an install video that shows it being installed in a very similar 2009 Yukon as yours. Your…

Hey Lynn, I have so good news! So the Roadmaster base plate kit part #RM28GR does fit your 2024 Chevy Colorado ZR2. It only doesn't fit the ZR2 Bison models.

The method we use to determine the correct line to install a transmission cooler on is pretty simple. You want to install the cooler on the return line. To determine which line is the return line you will want to start with your truck totally cooled…

Hi John; yes, the RM Reflex Steering Stabilizer #RM-RBK15-RSSC will fit your 1998 Chevrolet Express 3500 Class B RV.