How to tell which transmission fluid line is the return line?

In order to tell which transmission fluid line is the return line leaving the factory cooler of a vehicle like your 2001 Chevy Silverado you want to start with your vehicle cold. Start it up and put it in drive and brake torque it (apply brakes and rev the engine), for about 10 seconds or so, put vehicle back in park, and turn engine off.

Where are the oil cooler line connectors located?

Automatic Transmission Oil Cooler Line Connector (800-606) by Dorman®. Location: to Transmission Cooler. Quantity: 1 Piece. Dorman’s Auto Trans Oil Cooler Line Connectors are constructed from high-quality materials to provide a… Automatic Transmission Oil Cooler Line Connector (800-637) by Dorman®. Location: Transmission Side. With Long Fitting.

Where are the Dorman automatic transmission oil cooler connectors?

Automatic Transmission Oil Cooler Line Connector (47155) by Dorman®. Location: To Radiator. Quantity: 1 Piece. Package Type: Card. Thread: 1/2″ x 20 Female – 1/4″ NPTF Male. Dorman’s Auto Trans Oil Cooler Line Connectors are… Automatic Transmission Oil Cooler Line Connector (800-743) by Dorman®.

Where is the transmission cooler on a Dodge?

Trans Cooler Return Line Chart Transmission Location Chrysler / AMC 404, 413, 470 Top 41TE, 41AE, (604) Front 42LE Top

How to determine which transmission line is the return line?

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 off. Start the truck and put it in drive, apply the brakes firmly and then apply the accelerator slightly so that the rpms climb. Put the truck back in park and shut it off.

What are the lines on a transmission cooler?

Barb to Barb – Used to connect two rubber lines together. These fittings are common for when you install a transmission cooler and keep the existing rubber lines on the vehicle. This type of fitting is found on both the transmission and radiator where there is a pre bent transmission line.

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