How to perform a diagnostic check and maintenance on Ignition Control Module on Chevrolet Blazer?

To check the High Energy Ignition System (HEI), start by disconnecting the four-terminal connector from the distributor and test for a spark at the coil using a spark tester connected to the coil wire. If there is a spark, inspect the distributor cap, rotor, and coil wire for any damage or opens. In case there's no spark, remove the distributor cap and reconnect the four-terminal connector to the ignition control module. Unplug the two-wire connector from the distributor and check for voltage at the module positive (+) terminal of the two-wire connector with the ignition switch turned ON. Depending on the reading, follow the diagnostic steps to identify potential faults and replace the faulty components as necessary.For the removal of the distributor, disconnect the negative battery terminal, remove the distributor cap and rotor, and disconnect the electrical connectors from the ignition control module. Remove both module attaching screws and lift the module away from the distributor. If reusing the same module, avoid wiping off the grease from the module or distributor base. For installation, apply silicone grease on the module face and distributor base if using a new module. Install the module, attach both electrical leads, and then reinstall the distributor rotor and cap. Finally, reattach the cable to the negative battery terminal.For Enhanced Distributor Ignition (EDI) System check, examine the crankshaft sensor reference voltage and resistance, and inspect the crankshaft sensor circuit for any issues. To remove the EDI ignition control module, detach the negative battery cable, disconnect the ignition control module electrical connector, remove both module attaching screws, and lift the module from its mount. For installation, secure the module with screws and plug in the electrical connector. Reattach the cable to the negative terminal of the battery.For Distributorless Ignition System (DIS) check, perform the ignition system checks first. Then, disconnect the two-wire electrical connectors from the ignition control module and verify battery voltage on the pink wire. Check the resistance of the crankshaft sensor and circuit. Also, check the output voltage signal from the crankshaft sensor. If all the tests pass but there is no spark output at any of the coils, the ignition control module may be defective. If any system check findings are incorrect, diagnose the individual circuits and components.To remove the DIS system, detach the negative battery cable, label and disconnect all spark plug wires from the DIS assembly, unplug the electrical connector at the module, and remove the DIS and support bracket assembly. Unbolt and separate the coil and module assemblies, then detach the wires between the module and coil assemblies from the spade terminals on the underside of the coils. Unbolt the module from the support bracket. Installation is the reverse of removal, ensuring the wires are attached to the new module's coil assembly spade terminals in the same order as removed.

Genuine Chevrolet Blazer Ignition Control Module

Ignition Spark Control Module

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14 Ignition Control Modules found

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Chevrolet Blazer Module Asm,Electronic Ignition Control (W/O Coil)
Part Number: 19352931
$133.46 MSRP: $290.24
You Save: $156.78 (55%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: MODULE ASM,ELEK IGN CONT (W/O COIL)
- Replaced by: 19435467
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2005 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
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Chevrolet Blazer Distributor Ignition Control Module Assembly
Part Number: 19179578
$75.19 MSRP: $163.54
You Save: $88.35 (55%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Asm,Distributor Ignition Control ; Module, Distributor (Also Knock Sensor); Ignition Lock Cylinder, Ignition Module, Module
- Replaced by: 19435461
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1995 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
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Chevrolet Blazer Distributor Ignition Control Module Assembly
Part Number: 19180771
$46.76 MSRP: $101.72
You Save: $54.96 (55%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Asm,Distributor Ignition Control ; Module, Distributor (Also Knock Sensor); Ignition Module
- Replaced by: 19474373
- Replaces: 10482820
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
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Chevrolet Blazer Distributor Ignition Control Module Assembly
Part Number: 19179581
$50.21 MSRP: $146.04
You Save: $95.83 (66%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Asm,Distributor Ignition Control ; Module, Distributor (Also Knock Sensor); Ignition Lock Cylinder, Ignition Module, Module
- Replaced by: 19435464
- Replaces: 10457176, 10482832, 16140189, 16139869, 10482836, 10497133, 10456344, 10497132
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
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Chevrolet Blazer Module Asm,Electronic Ignition Control (W/O Coil)
Part Number: 19178835
$297.60 MSRP: $561.50
You Save: $263.90 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Ignition Module
- Replaced by:
- Replaces: 10490872
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-1999 Chevrolet Blazer | 2 DOOR, 4 DOOR
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Chevrolet Blazer Module Assembly, Electronic Spark Control
Part Number: 16175139
$306.27
ADD TO CART
Product Specifications
- Other Name: MODULE, Distributor (also Knock Sensor)
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L
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Chevrolet Blazer Distributor (also Knock Sensor) MODULE
Part Number: 16126761
Product Specifications
- Other Name: Module Asm ; Module, Distributor (Also Knock Sensor)
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Electric Spark Control Module Assembly
Part Number: 16128251
Product Specifications
- Other Name: Module Assembly, Electronic Spark Control ; Module, Distributor (Also Knock Sensor); ESC Control Module, ESC Module, Module
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1994 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.7L
- 1987-1988 Chevrolet Blazer | 1/2 TON | 6 Cyl 4.3L
- 1985 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Electric Spark Control Module Assembly
Part Number: 16042121
Product Specifications
- Other Name: Module Assembly, Electronic Spark Control ; Module, Distributor (Also Knock Sensor)
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1986 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.0L
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Chevrolet Blazer Module Asm,Electronic Ignition Control (W/O Coil)
Part Number: 19352933
$11.16 MSRP: $19.58
You Save: $8.42 (43%)
Product Specifications
- Other Name: MODULE ASM,ELEK IGN CONT (W/O COIL); Ignition Module
- Replaced by:
- Replaces: 16176089
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
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Chevrolet Blazer Module,Knock Sensor
Part Number: 16208961
Product Specifications
- Other Name: MODULE, Distributor (also Knock Sensor); ESC Control Module, ESC Module, Ignition Module
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
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Chevrolet Blazer Distributor (also Knock Sensor) MODULE
Part Number: 16128261
Product Specifications
- Other Name: Module Asm ; Module, Distributor (Also Knock Sensor); ESC Control Module, Module, Spark Module
- Replaced by:
- Replaces: 16052401
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L
- 1987 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.0L
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Chevrolet Blazer Distributor Ignition Control Module Assembly
Part Number: 19180772
Product Specifications
- Other Name: MODULE; Ignition Module
- Replaced by:
- Replaces: 01894308, 10482821, 1894308
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Blazer | 1/2 TON | 6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Electronic Ignition Control Module Assembly
Part Number: 16048021
Product Specifications
- Other Name: Module Asm,Electronic Ignition Control ; Module, Distributor (Also Knock Sensor); ESC Control Module
- Replaced by:
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985 Chevrolet Blazer | 1/2 TON

Chevrolet Blazer Ignition Control Module

Chevrolet Blazer Ignition Control Module is responsible for the precise on and off switching of the coil current so that the engine receives the high voltage sparks it needs for smooth combustion and reliable starts. This Ignition Control Module achieves this with solid state transistors controlling the opening or closing of the coil primary the instant a signal arrives from the distributor pickup or crankshaft sensor, collapsing the magnetic field and producing the 15,000 to 40,000 volts that jump each plug gap. Early Chevrolet distributor configurations had the module in the housing. Base timing was set by light, and the mechanical centrifugal and vacuum devices were responsible for advance, but the solid-state design already eliminated the fragile breaker points and increased the spark energy. Later distributorless systems found on Chevrolet Blazer models retained the basic Ignition Control Module concept but allowed the engine computer to control timing based on speed, load, throttle and knock input, providing even tighter control, better economy and lower emissions in a Blazer. If an Ignition Control Module fails, the starter may spin without spark and simple voltage or flicker tests quickly confirm a dead Ignition Control Module needing replacement on any Blazer.

Each OEM Chevrolet Blazer Ignition Control Module we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Blazer Ignition Control Module Parts Questions & Experts Answers

Module Asm,Electronic Ignition Control (W/O Coil)
19352931
Q:
How to perform a diagnostic check and maintenance on Ignition Control Module on Chevrolet Blazer?
A:
To check the High Energy Ignition System (HEI), start by disconnecting the four-terminal connector from the Distributor and test for a spark at the coil using a spark tester connected to the coil wire. If there is a spark, inspect the distributor cap, rotor, and coil wire for any damage or opens. In case there's no spark, remove the distributor cap and reconnect the four-terminal connector to the ignition control module. Unplug the two-wire connector from the distributor and check for voltage at the module positive (+) terminal of the two-wire connector with the ignition switch turned ON. Depending on the reading, follow the diagnostic steps to identify potential faults and replace the faulty components as necessary.For the removal of the distributor, disconnect the negative battery terminal, remove the distributor cap and rotor, and disconnect the electrical connectors from the ignition control module. Remove both module attaching screws and lift the module away from the distributor. If reusing the same module, avoid wiping off the grease from the module or distributor base. For installation, apply silicone grease on the module face and distributor base if using a new module. Install the module, attach both electrical leads, and then reinstall the distributor rotor and cap. Finally, reattach the cable to the negative battery terminal.For Enhanced Distributor Ignition (EDI) System check, examine the crankshaft sensor reference voltage and resistance, and inspect the crankshaft sensor circuit for any issues. To remove the EDI ignition control module, detach the negative Battery Cable, disconnect the ignition control module electrical connector, remove both module attaching screws, and lift the module from its mount. For installation, secure the module with screws and plug in the electrical connector. Reattach the cable to the negative terminal of the battery.For Distributorless Ignition System (DIS) check, perform the ignition system checks first. Then, disconnect the two-wire electrical connectors from the ignition control module and verify battery voltage on the pink wire. Check the resistance of the crankshaft sensor and circuit. Also, check the output voltage signal from the crankshaft sensor. If all the tests pass but there is no spark output at any of the coils, the ignition control module may be defective. If any system check findings are incorrect, diagnose the individual circuits and components.To remove the DIS system, detach the negative battery cable, label and disconnect all spark plug wires from the DIS assembly, unplug the electrical connector at the module, and remove the DIS and support bracket assembly. Unbolt and separate the coil and module assemblies, then detach the wires between the module and coil assemblies from the spade terminals on the underside of the coils. Unbolt the module from the support bracket. Installation is the reverse of removal, ensuring the wires are attached to the new module's coil assembly spade terminals in the same order as removed.