EXPERTEC Technical Service Bulletins (84-208)

Publication date: 1984-09-26
Reference number: 84-208

EXPERTEC TECHNICAL SERVICE BULLETINS

TECHNICAL SERVICE BULLETIN

Reference Number(s): 84-208, Date of Issue: 09/26/1984

LOW SPEED SURGE (CHUGGLE) PROM INFORMATION-TCC

Model: 1984 Chevrolet Corvette with automatic transmission

Bulletin No.: 84-208

Date: September 26, 1984

SERVICE INFORMATION

Some 1984 Corvettes may experience a low speed surge, which may be referred to as a "chuggle", and is usually noticeable at low engine speeds when the torque converter clutch is engaged.

Any 1984 Corvette with an automatic transmission experiencing this condition may be corrected with the installation of a new calibration PROM, P/N 1226938.

The new PROM calibration delays TCC engagement speed to 41 mph in fourth gear and disengagement speed 40 mph.