Reported Nov 7, 1978152 vehicles affectedGENERAL MOTORS CORP.Built May 1, 1978 – Jul 1, 1978
The defect
The involved engine fan assemblies may be of inadequate durability. Consequently, the fan spider may wear over a peroid of time and break at the hub without warning, while the engine IS running.
The remedy
Dealer will replace the suspect engine fan assembly, without charge.
Vehicle description: trucks equipped with 366 or 427 V8 engines.system: engine; engine cooling fans.consequences of defect: chipped fan pieces could fly from the assembly anddamage other engine components. Also, if the hood IS open and the engine isrunning, the fan fragments could fly out from the engine and injure persons inthe area.note: do not operate the engine with the hood open until the vehicle has beendinspected.