Oil Cooler Flushing & Flow Test: Preparation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, 2004 Chevrolet Cab & Chassis Silverado, and 2003 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
- After the repair or replacement transmission is installed in the vehicle, DO NOT reconnect the oil cooler pipes.
- Remove the fill cap (9) on the Transmission Oil Cooler and Line Flusher and fill the flusher tank (4) with 20 oz. (0.6L) of flushing fluid using the measuring cup (6). DO NOT overfill. See Fig 1 .
- Install the fill cap (9) on the transmission oil cooler and line flusher and pressurize the flusher tank (4) to 80-100 psi, using the shop air supply at the tank air valve (9).
- Connect the transmission oil cooler flusher adapters to the transmission oil cooler lines.
- Connect the transmission oil cooler and line flusher discharge hose (5) to the oil cooler return pipe (top connector). See Fig 2 .
- Clip the discharge hose (5) onto the oil drain container.
- Attach the transmission oil cooler and line flusher to the undercarriage of the vehicle with the hook provided, and connect the flushing system feed supply hose (3) from the transmission oil cooler and line flusher to the oil cooler feed pipe (bottom connector).
- With the water supply valve (1) on the transmission oil cooler and line flusher in the OFF position, connect the water supply hose (7) from the transmission oil cooler and line flusher to the water supply at the faucet.
- Turn ON the water supply at the faucet.