GM 15781494
Cooler Line

During an Oil Cooler Hose/pipe replacement work ensure the proper positioning of the vehicle to prevent personal injury. Start with the vehicle located on a lifting device while the hood goes up and install a catchment container below the vehicle. Remove the upper transaxle oil cooler line at the Radiator before raising the vehicle to disconnect the lower line that connects to the transaxle. First detach the transaxle Fan Shroud cooling lines before using the wrench to remove the transaxle cooler line assembly nut from the transaxle unit to extract the transaxle cooler lines. The installation of new transaxle oil cooler pipe seals needs to be performed. The correct installation requires fitting transaxle oil cooler lines into their vehicle position before attaching the transaxle oil cooler line assembly to the transaxle while following fastener caution procedures. Use a 9 nm (80 lb in) torque to tighten down the transaxle oil cooler line assembly nut with a standard procedure. Insert the lower transaxle oil cooler line into the Radiator before fixing the transaxle oil cooler lines with the Fan Shroud. The upper transaxle oil cooler line installation requires lower vehicle position before connecting it to the Radiator. The dexron(R) vi fluid for automatic transmissions will fail to work properly in this transaxle system while gm t-iv fluid p/n 88900925 should be used as the correct option. Begin fluid addition to the transaxle while running the engine to detect any fluid leakage.

Before starting the hose/pipe replacement maintain the vehicle in a secure position to shield against possible harm. Raising the vehicle hood requires first placement of the drain pan below the vehicle body on the hoist. The maintenance starts by detaching the upper transaxle oil cooler line from the Radiator before vehicle lifting followed by disconnecting the lower transaxle oil cooler line. First disengage both transaxle cooler lines from their position on the Fan Shroud then remove the transaxle cooler line assembly nut from the transaxle before taking out the transaxle cooler lines from the vehicle. The installation requires new transaxle oil cooler pipe seals. The installation process begins with putting the transaxle oil cooler lines inside the vehicle before connecting the transaxle oil cooler line assembly to the transaxle while tightening both parts to 9 n.m (80 lb in) using the transaxle oil cooler line assembly nut. The lower transaxle oil cooler line should connect to the Radiator before securing lines by the Fan Shroud. Lower the vehicle first while connecting both ends of the upper transaxle oil cooler line to the Radiator. The gm t-iv fluid p/n 88900925 serves as the proper fluid for the application whereas using dexron(R) vi automatic transmission fluid will damage the transaxle. Start the engine after adding fluid to the transaxle to perform leakage inspection.

Disconnect the upper transaxle oil cooler line from the radiator, raise the vehicle, and disconnect the lower transaxle oil cooler line.