6HP26 Automatic Transmission
Transmission Fluid CoolerCAUTION: Whenever a transmission has been disassembled to install new parts, the transmission fluid cooler and transmission fluid cooler tubes must be cleaned and backflushed. Use a torque converter/oil cooler cleaner.
NOTE: Cleaning and backflushing the transmission fluid cooling system, along with following all the normal cleaning and inspection procedures during disassembly and reassembly, will keep contaminants from entering the transmission, causing a repeat repair.
When internal wear or damage has occurred in the transmission, metal particles, clutch plate material or band material may have been carried into the torque converter and transmission fluid cooler. These contaminants are a major cause of recurring transmission troubles and must be removed from the system before the transmission is put back into use.