Where is the esc module on my 93 chevy s10 2.5l

Hello,

Have you checked the 'ignition control module' more common of a problem than a 'Wiring issue between the ignition module and the ECM'?

If not google: how to test ignition control module 93 chevy lumina

Library - car manual

I hope this helps.

Check out this forum it might answer your question , check the answer from triplex-08.

Service Traction and ESC Archive Chevy Malibu Forum Chevrolet Malibu...

What is electronic spark control (ESC)?

Electronic Spark Control

An additional electronic control (ESC) is used on vehicles equipped with
an LE9 engine. The Electronic Spark Control (ESC) system is a closed
loop system that controls engine detonation by modifying the spark
advance when detonation occurs. The amount of retard is a function of
the degree of detonation.



Controller

The (ESC) controller processes the sensor signal and applies it to the
distributor to adjust spark timing. The process is continuous so that
the presence of detonation is monitored and controlled. The controller
is a hard wired signal processor/amplifier which operates from 6 to 16
volts. The controller has no memory storage.



Sensor

The (ESC) sensor is a piezoelectric device, mounted in the engine block
that detects the presence (or absence) and intensity of detonation by
the vibration characteristics of the engine. The output is an
electrical signal that goes to the controller. A sensor failure would
allow no retard.



ESC Vacuum Switch

On LE9 engine equipped vehicles with automatic transmission a "tip in"
vacuum switch is used. Its function is to provide a momentary contact
closure (signal) to the ESC controller during a throttle "tip in"
condition which then briefly retards spark timing to minimize knock.
The switch contacts are normally open under steady engine vacuum
conditions including no vacuum, and all brief increasing vacuum
conditions. Basically the switch closes only during rapidly decreasing
vacuum conditions such as that encountered on rapid throttle operation.

metal box mounted in front of coil.

the ignition module is bolted under the coil pack on the rear of the motor

You may be entitle to a campaign about ESC/steering module relearning, what happens if you leave the key in the ACC position for 2 seconds without starting the ESC is disable until you restart the vehicle. Here is the letter to owner number 07224A070911-005 , Hopefully this is still active and they should not charge you anything

No it's undr the inghtion modiule thats under the coil paks. After the coils and the module are removed and the bracket that the module was on it's under it. Or right next to it.

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try yhe pickup coil or ignition module wich are both located on the distributor or the igniton coil.im going through the same thing.all i have left to try is the ignition module.if i get it ill be sure to let you know

Its mounted on the passenger side of the intake next to the TBI