Miscellaneous Pcm/VCM Controls: Transmission: Notes
WARNING: This page is about a different car, the 1998 GMC Pickup and 1998 Chevrolet Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
To identify circuits referenced in the following tests, use appropriate wiring diagram in WIRING DIAGRAMS - 4.3L
article. PCM/VCM transmission controls are also covered in greater detail in TRANSMISSION SERVICING A/T article in AUTOMATIC TRANS SERVICE section REPAIR manual.