How do I remove the Ignition control module in a 1998 Chevrolet k1500 5.7.

This system does not use the ignition module used on the DI systems in the past. The VCM controller now controls the ignition control (IC) and bypass functions.
The crankshaft sensor, located in the front engine cover, is perpendicular to a target wheel attached to the crankshaft. The target wheel is equipped with slots situated 60 degrees apart. As the crankshaft rotates, the target wheel rotates past the crankshaft position sensor. The rising and falling edges created by the slots cause a signal to be sent back to the VCM. This signal occurs three times per crankshaft revolution and is referred to as the 3x signal for V6 applications. The signal occurs four times per crankshaft revolution and is referred to as the 4x signal for V8 applications.
The VCM then utilizes this 3x (V6) or 4x (V8) signal in order to provide the correct spark to the engine by way of the single coil driver module. The single coil driver module is basically an electronic switch that when commanded by the VCM, causes the primary coil voltage to breakdown, energizing the secondary coil and providing a spark via the coil wire to the distributor cap. The distributor consists of the following components:
The system consists of the following components:
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Vehicle control module (VCM)

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Distributor

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Ignition coil driver module

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Ignition coil

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Crankshaft position (CKP) sensor

Now which part do you want to replace ?

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Cap and rotor

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Camshaft position sensor

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Gear drive and shaft

The camshaft drives the distributor shaft which rotates providing a spark to the correct cylinder by way of the cap and rotor. The camshaft position (CMP) sensor functions much like the crankshaft sensor previously described but provides only a 1x signal to the VCM. That is, for every 2 rotations of the crankshaft, there is 1 rotation of the camshaft. Note that the camshaft position sensor will not affect driveability. The sole purpose of the camshaft position sensor is to provide the VCM with the necessary information for the misfire diagnostic trouble codes (DTCs).

there are three types you need to know what one it is, one type is on the dispack and the other 2 fit to the distributor one type has 3 connectors and other type has 1 connector, dispack best just to change the whole unit as the pins can brake if you remove the modular of it.

Set the engine to the number one compression,and bring the timing mark to zero on the harmonic balancer.(or just bring the timing on the harmonic to zero). mark to match the plug wires to cap,remove the cap.(if you can remove the cap without removing plug wire) mark the rotor position to the engine using a scribe, mark the rotor to the distributor, mark the distributor to the engine using a scribe,Take the lock down bolt out and pull out distributor. when you reinstall line up all your marking and check timing.

Could be the ignition module. It is located on distributor under rotor . Unscrew distributor cap and flip out of the way, leaving spark plug wires attached. Pull rotor off and remove electrical wires on both ends of ignition module. unbolt ignition module and remove. Make sure you put the grease on the metal bottom side of ignition module to disipate the heat that is generated, before you install new ignition module, if you want it to last.Good Luck.

Your vehicle may be equipped with either of the following ignition systems, depending on the year and engine combination:
* 1981-82 1.3L and 1.6L engines: Dura Spark II Ignition System
* 1982-85 1.6L Non-EFI and 1986 1.9L Non-EFI engines: Thick Film Ignition I (TFI-I) System
* 1983-90 1.6L EFI and 1.9L EFI engines: Thick Film Ignition IV (TFI-IV) System

1. Disconnect the negative battery cable.
2. Remove the distributor from the engine.
3. Place the distributor assembly on a workbench.
4. Remove the two TFI ignition module retaining screws.
5. Pull the right side of the module down the distributor mounting flange and then back up to disengage the module terminals from the connector in the distributor base. The module may then be pulled toward the flange and away from the distributor.
   

Do not attempt to lift the module from the mounting surface, except as explained in Step 3, as the pins will break at the distributor module connector.


To install:

1. Coat the baseplate of the TFI ignition module uniformly with a 1 / 32 in. (0.8mm) of silicone dielectric compound WA-10 or equivalent.
2. Position the module on the distributor base mounting flange. Carefully position the module toward the distributor bowl and engage the three connector pins securely.
3. Install the retaining screws. Tighten to 15-35 inch lbs. (1.7-4.0 Nm), starting with the upper right screw.
4. Install the distributor into the engine. Install the cap and wires.
5. Reconnect the negative battery cable.
6. Recheck the initial timing. Adjust the timing, if necessary.

Hope helps.

The distributor cap and/or the ignition rotor most likely have a crack somewhere and the distributor cap should be replaced along with the ignition rotor. The ignition module could have been damaged as well as the ignition pick-up coil/stator and if replacing the distributor cap and ignition rotor does not solve the problem then the ignition module or the pick-up coil/stator assembly inside of the distributor is also most likely damaged and the distributor will need to be replaced. There is a certain procedure for removing and replacing the distributor, and the ignition timing is not adjustable and it is not set using a timing light or with the engine running, and if you do have to replace the distributor Let me know if you require the procedure to properly remove and replace the distributor or if you require any further assistance.

The timing is not adjustable and it is computer controlled, but the distributor must still be clocked in properly and static timed, and here is how it is done.

There is a mark or notch on the distributor housing that the rotor should be pointing to when the engine is on top dead center. This static timing is all that matters and the computer will be able to control the timing as long as the ignition rotor is in that position when the engine is at top dead center.

1. Place the engine at top dead center.

2. Look under the distributor cap and find where the number one terminal runs under the distributor cap, and where that position on the distributor cap corresponds with the distributor housing, and it should match up to a mark or a notch on the distributor housing.

3. With the engine on top dead center the ignition rotor should be pointing to the mark or notch that is on the distributor housing, if it is not then loosen up the distributor and turn the distributor until the ignition rotor is pointing to the mark or notch on the distributor housing, the engine should now be static timed.

Both of these parts sit in the distributor.
4.3L engine

1 - ignition control module NAPA part # TP58
remove dist. cap unscrew two small screw remove module and replace, that the easy one.

2 - Distributor pick-up assembly NAPA part # MP143
remove distributor cap, mark dist.rotor so that it goes back on the same place it came out, remove bolt at base of dist., pull distributor out, at base of distributor shaft is a gear, remove roll pin from gear, remove gear slide shaft out through the top of distributor, unscrew pick-up and replace. Reinstall every thing back and your done. Set ignition timing.

check the gaps on plugs also distributor also condensor in distributor

I believe those motors have a distributorless ignition system. Each cylinder has a coil mounted on top of the valve cover.