Question about 1993 GMC Sierra

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How to replace Ignition Module of 1993 GMC Sierra

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Assuming it is in the distributor,
you remove two screws & unplug the wire
connector

Posted on May 08, 2014

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Posted on Jan 02, 2017

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1 Answer

1993 Sierra removal of ignition module


The ignition module is under the distributor cap. Mark the spark plug wires location then remove the cap. Remove the 2 screws and connectors.

May 08, 2014 | 1999 GMC Sierra 3500

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My gmc 4.3 stalls when warm and wont start without ether. then it runs fine


I had the exact problem with my 1993 chevy c1500. I found that the IAC was sticking so the engine would die at idle after warming up and the ignition module was pulsing the ECM intermittently after the engine warmed up so the fuel pump wasn't being turned on after the engine died....I replaced the ignition module and the IAC valve and all is good. I don't know if testing the ignition module reveals that it isn't sending pulses to the ECM.

Mar 28, 2013 | 1991 GMC Sierra

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I have a 93 sierra,4.3 liter, put new plugs,cap,rotor and the ignition relay is good. it gets gas cause i smell it and it turns but will not start.what could be the reason it will not start? its a new


check the fuel line pressure on the injector rail ,here you will find a valve that looks like a tyre valve and take the cap off and connect a pressure gauge to this and see what you get should be around 55lbs

Mar 30, 2012 | 1993 GMC Sierra

1 Answer

I have a 2000 gmc sierra 4.3L that has had the ignition module fail REPEATEDLY over the last 6 months. Auto shop has replaced it ever time, which gets the truck to run again, but only to have it fail again...


Try using heat sink grease between the metal base of the ignition module and the mounting position, from the sounds of it the circuitry is overheating and failing. I noticed that this particular module is very hot while the truck is running with my own Sierra

Aug 16, 2011 | 1994 GMC Sierra

1 Answer

Were is the shift module located at on a 1993 gmc sierra


Shift module? Are you talking about a control for the transmission? The Engine computer controls the transmission. What kind of problem do you have? I can likely help.

Aug 07, 2010 | 1993 GMC Sierra

1 Answer

I have a 1993 gmc sierra. I have been have


no, the ignition cylinder may have to be replaced to start.

Jul 20, 2010 | 1993 GMC Sierra C3500

1 Answer

What are the timing specs on a 1993 GMC Sierra Z71?


theres no advance wire on that engine!!! theres a hash mark on the back of the intake and one on the distrbutor shaft you set the distrib with the has mark and yes!! the ecm! will always reset the timing that is what is does but if it's pinging or knocking then change the ignition module cause the dwell side of it is out of range!

Jan 14, 2010 | 1993 GMC Sierra K1500

1 Answer

Have a 1993 gmc sierra. runs fine most of the time . but will just kill sometimes out of the blue. does not matter if it is warmed up or cold. when it dies will just turn over but not start. replaced spark...


When this truck dies,does it have spark,or fuel pressure?Check it for no spark,if it has no spark,replace the ignition module.These gm year models are bad to go out ,and the distributor pick up coil also.Replace the module first,if this does not help,replace the pick up coil.NOW ON A FUEL RELATED PROBLEMit could be fuel pump,fuel pump relay,or the pick up coil.The pick up coil pulses the injectors,and the spark.I hope this helps,if not let me know.

Sep 20, 2009 | 1993 GMC Sierra

1 Answer

We have no spark from the coil


take the cap off the dist and pull out the ignition module take it to autozone and have it tested also check out the cap and rotor replace it if it been awhile

Aug 17, 2009 | 1993 GMC Sierra K3500

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