Grand Prix V6-191 3.1L (1989)
![background image](/pontiac/grand_prix/v6-191_3.1l/Page-1707031.png)
Cam to the Control Head. The Radio Control Interface Module is used to shape the signal pulses, to separate the send and receive pulses, and to convert
from a one-way (E & C data line - CKT 835) to two one-way data lines (Turn Signal Switch Harness).