TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H760C01XXL but our guide tool can

but our guide tool can also be used during disassembly

and 80-85 Impalas

Fully charged and ready to install at time of shipping

900 lb/hr at 9 psi

Great Choice for Towing

TCI Vacuum Modulator - Adjustable - GM - Powerglide - 1963-73 H760C01XXL but our guide tool canGM '63 '73 Powerglide Adjustable Vacuum Modulator Valve. This TCI Adjustable Modulator Valve is designed specifically for GM '63 '73 Powerglide Transmissions. The vacuum modulator is a vital component of automatic transmissions. It tells the transmission what kind of load is being put on it, allowing the transmission to react with the proper line pressures and shift points. Over time, modulators can develop leaks, suffer ruptured diaphragms, become