Miscellaneous Pcm/VCM Controls: Transmission: Notes

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1998 GMC Suburban, 1998 GMC Pickup, 1998 GMC Cab & Chassis, 1998 GMC C3500 HD, and 1998 Chevrolet Suburban. 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 - 7.4L article. PCM/VCM transmission controls are also covered in greater detail in TRANSMISSION SERVICING A/T article in AUTOMATIC TRANS SERVICE section or TRANSMISSION SERVICING M/T article in MANUAL TRANS SERVICE section REPAIR manual.