CHEVROLET\CADILLAC\GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. TRANSMISSION CLUTCH HOUSING FRACTURE-REPROGRAM TRANSMISSION CONTROLLER. EXCESSIVE PRESSURE ON THE TRANSMISSION CLUTCH COULD CAUSE A FRACTURE. MAY RESULT IN AN IMPROPER TRANSMISSION SHIFT WHEN SHIFTING FROM THIRD TO FOURTH GEAR. CSC LETTER WAS RECEIVED. *PE UPDATED 5/11/11. *PE
