IGNITION MODULES

  • Professional
  • GM OE
  • FAQs

    • An ACDelco Professional, premium aftermarket Ignition Control Module is the ideal high-quality replacement for your GM vehicle. It increases voltage in order for the spark plugs to ignite the air/fuel mixture as the starting and charging system starts the engine, maintains the battery's charge and provides power to the electrical accessories while the engine is running. An ACDelco Professional Ignition Control Module features electronically welded lead connections to help reduce heat stress, failure or cold joints. This Ignition Control Module has been laser trimmed to provide precise values and reduce deterioration and damage. It includes a copper slug heat sink to help dissipate heat and create a more stable environment and also features a large bus bar for added support and conductivity to address the installation and operating forces that stress terminal tabs. This premium aftermarket replacement Ignition Control Module is manufactured to meet or exceed your expectations for fit, form and function.

      FEATURES & BENEFITS

      • Feature electronically welded lead connections to reduce heat stress failure or cold joints
      • Laser trimmed to provide precise values and reduce deterioration and damage
      • Increase voltage in order for the spark plugs to ignite the air/fuel mixture
      • Include a copper slug heat sink to help dissipate heat and create a more stable environment
      • Equipped with a large bus bar for added support and conductivity to address the installation and operating forces that stress terminal tabs
      • Undergo stringent testing, often under extreme or unusual conditions, to help deliver the quality parts you expect from ACDelco
      • Professional, premium aftermarket replacement
      • Manufactured to meet expectations for fit, form and function to provide the performance and dependability you expect from ACDelco

      PRODUCT FACTS

      Find out more about ACDelco Professional Ignition Modules and how they fit into the Starting and Charging System with the product facts below.

      Function

      Increases voltage in order for the spark plugs to ignite the air/fuel mixture.

      Signs of Wear & Troubleshooting

      Due to an internal short or opening, a cracked case, a loose or disconnected power/signal source loose or disconnected high voltage wires, these problems may occur:


      • Engine will not start or run
      • Reduced power
      • Excessive tailpipe emissions
      • “Check Engine” light is on
      • Engine misfire
      • Reduced fuel economy

      What It Does

      The Starting and Charging System starts the engine, maintains the battery’s charge and provides power to the electrical accessories while the engine is running.

      Good Maintenance Practices

      Having your service technician regularly inspect your ignition system can help you stay away from conditions that may result in poor performance or reduced fuel economy.





    • Many ACDelco Ignition Modules feature electronically welded lead connections to help eliminate heat-stress failure or cold joints. Select ACDelco Ignition Modules have been laser trimmed to provide precise values and eliminate deterioration and damage.

      PRODUCT FACTS

      Find out more about ACDelco GM OE Ignition Modules and how they fit into the Starting and Charging System with the product facts below.

      Function

      Increases voltage in order for the spark plugs to ignite the air/fuel mixture.

      Signs of Wear

      Engine misfires or won’t start, poor starting characteristics

      What It Does

      The Starting and Charging System starts the engine, maintains the battery’s charge and provides power to the electrical accessories while the engine is running.

    • Is there a problem when my “Service Engine Soon” light appears?

      When your “Service Engine Soon” light illuminates, that is an indication that there is a potential issue with the drivability, electronics or emissions of your engine.

      While investigating what triggered the “Service Engine Soon” light, do you recommend any additional services?

      Preventative maintenance should be referenced in your Owner's Manual, and while repairing or having your “Service Engine Soon” light repaired, if your vehicle is due for maintenance, yes. As described in your Owner's Manual, this maintenance will help prevent future issues.

      If I don't investigate the problem, will the light turn off by itself?

      Possibly. Sometimes, the triggering device will reset itself thus turning off the “Service Engine Soon” light until that device/sensor is tested by the vehicle’s on-board computer again. If it fails the test again, the “Service Engine Soon” light will illuminate once again. Some devices/sensors when tested and failed will illuminate the “Service Engine Soon” light, and it will not go out until correct service work is performed.

      If I ignore the light, will there be consequences?

      General Motors has designed the vehicle to inform its driver if there is an issue with certain devices/sensors that affect the drivability/emissions. If this is ignored, there is a possibility that the drivability will suffer, fuel economy will be decreased or the emissions will be increased. Do not ignore the “Service Engine Soon” light.

      Is it possible for my vehicle to pass an emissions test if the “Service Engine Soon” light is on?

      No. When state and local officials perform certified emissions tests, one of the first steps in the process is to inspect for an illuminated “Service Engine Soon” light. If it is on, it will automatically fail the test.

      Does the “Service Engine Soon” light tell me when my vehicle needs a tune-up?

      No. The “Service Engine Soon” light is related to engine emissions and drivability conditions. Please refer to your Owner's Manual maintenance schedule for information pertaining to tune-up time intervals.