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Fig. 12: Identifying Transmission Oil Cooler Metal Composition 2. Determine whether the transmission oil cooler is steel or aluminum by using a magnet (1) at the cooler flange (2) at the radiator. 3. Refer to the table below. Using the temperature from step 1, locate on either the Steel MINIMUM Flow Rate table or the Aluminum MINIMUM Flow Rate table the minimum Example:: Fluid temperature: 24°C (75°F)
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Cooler type: Steel The MINIMUM flow rate for this example would be 0.8 GPM. 4. Inspect transmission oil cooler lines for damage or kinks that could cause restricted oil flow. Repair as needed. Minimum Flow Rate in Gallons Per Minute (GPM) BACK FLUSH PROCEDURE Temperature Range Steel Aluminum 65-66°F 0.6 gpm 0.5 gpm 67-70°F 0.7 gpm 0.6 gpm 71-75°F 0.8 gpm 0.7 gpm 76-80°F 0.9 gpm 0.8 gpm 81-84°F 1.0 gpm 0.9 gpm 85-89°F 1.1 gpm 1.0 gpm 90-94°F 1.2 gpm 1.1 gpm 95-98°F 1.3 gpm 1.2 gpm 99-103°F 1.4 gpm 1.3 gpm 104-108°F 1.5 gpm 1.4 gpm 109-112°F 1.6 gpm 1.5 gpm 113-117°F 1.7 gpm 1.6 gpm 118-120°F 1.8 gpm 1.7 gpm
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 13: Connecting J 45096 Adapters To Oil Cooler Supply And Return Lines 1. Connect the J 45096 adapters (1) to the vehicle transmission oil cooler supply and return lines at the transmission, may require J 35944-200 . See Special Tools.
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 14: Identifying Black Supply Hose And Clear Waste Hose 2. Connect the black supply hose (1) to the return line, top connector of the transmission, and the clear waste hose (2) to the feed line, bottom connector of the transmission, to the vehicle
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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