FORD: 2003-08 trucks with 6.0L diesel engine
SUBJECT: Ford has released a cooling system flush procedure to be used when oil or transmission fluid gets into the cooling system. If the mixture exists for too long, the procedure may not work, in which case extensive disassembly will be needed to clean the system. The eight-page bulletin includes complete instructions, several color illustrations and a list of materials and approved cleaning fluids.
Bulletin 08-23-1
GENERAL MOTORS: 2004-07 Chevrolet Express, Silverado 2500-3500 Series, GMC Savana, Sierra 2500-3500 Series with 4.8L or 6.0L engine and automatic transmission
SUBJECT: A rattle or knocking noise coming from the bell housing when the engine is at idle may be caused by a cracked flexplate. The bulletin states the noise can be pinpointed with a stethoscope or "chassis ears." The fix is to replace the flexplate. A kit is available (12621399) that includes the spacer and new bolts.
Bulletin 08-06-01-023
Source: ALLDATA
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