Gm Ignition Module Wiring Schematic

Tach signal is a purple wire with a white trace pin r advance control signal is a white wire pin e override cranking signal is a tan wire with a black trace pin b.

Gm ignition module wiring schematic. With a gm hei 7 pin and 8 pin modules the ignition module wires you need to know about are. How to test the gm ignition control module 1995 2005. The ignition control module icm has 4 wires coming out of it. Power 12 v circuit.

Hei ignition systems are very dependable and offer great performance on a number of applications. This tutorial will help you test the ignition coil ignition module and the crankshaft position sensor. Ignition control module icm circuit descriptions. Below are the descriptions of what each circuit does.

Using megatune 2 25 settings ignition settings. All of the information you need to diagnose a no start problem caused by the ignition module or the ignition coil or the distributor pickup coil. Complete step by step testing instructions. Most of the original gm v 6 and v 8 models used an ignition coil inside the distributor cap making it a one piece ready to run distributor.

This electronic ignition system operates with full 12 volts. Circuit labeled a pink wire. Gm 4 pin hei electronic ignition control module wiring connections diagram with a magnetic pickup coil. Ignition system no start diagnostic manual.

Ignition system circuit diagram 1992 1995. Each circuit is identified by a letter and this is the same letter that you will find on the ignition module s connector. The typical ignition system circuit diagram for the 1992 1995 4 3l 5 0l and 5 7l 1500 2500 3500 pick up and suburban can be found here.