| BOP | ……... | Buick, Olds, Pontiac, Cadillac |
| DIS | ……... | GM Distributorless Ignition used on Buick V6 (one coil for every two spark plugs) |
| ECU | ……... | Engine Control Unit |
| HEI | ……... | GM High Energy Ignition |
| IPU | ……... | Inductive Pickup Ignition — Racing crank trigger ignitions and magnetic pickup distributors |
| NC | ……... | Normally Closed |
| NO | ……... | Normally Open |
| PWM | ……... | Pulse Width Modulated — Varying the duty cycle of a solenoid to control the volume or pressure in a hydraulic circuit |
| SCU | ……... | Speedometer Control Unit — (TCI Part# 377300) uses the VSS signal to drive a standard style speedometer cable. |
| TCC | ……... | Torque Converter Clutch — controls the apply and release of the torque converter lock-up |
| TCU | ……... | Transmission Control Unit |
| TISS | ……... | Transmission Input Speed Sensor — magnetic pickup monitoring the forward clutch drum on a 4L80E/4L85E |
| TOSS | ……... | Transmission Output Speed Sensor — magnetic pickup monitoring output shaft speed |
| TPS | ……... | Throttle Position Sensor — relays throttle opening/closing to ECU and/or TCU |
| VSS | ……... | Vehicle Speed Sensor |
| WOT | ……... | Wide Open Throttle |