Having problems with your 1998 GMC Jimmy ?

99 gmc jimmy won't 'spark' to start. It cranks but it just won't spark to start.

Posted / edited by AnonymousUser on : 26-10-2020

Answers :

Your problem will be in one or more of the power feeds to the ECM. This could be from a blown fuse,fusible link ,faulty ignition switch or poor connection in wire connector.

Attached is the wiring diagram for the ECM, I marked the three power feeds to ECM, you will need to test these with a test light or volt meter(suggested as you can see actual voltage reading). After finding which one has no or low voltage...trace it back the source and correct as needed.


http://autorepair.about.com/library/faqs/bl926d.htm

http://answers.yahoo.com/question/index?qid=20080504181320AALB2FK

http://answers.yahoo.com/question/index?qid=20080108125015AAC7nsu

http://wiki.answers.com/Q/What_does_tdc_mean_when_answered_no_spark_after_changing_plugs_and_wires_and_rotor_and_distributer_cap
Repair Help & Product Troubleshooting for 1998 GMC Jimmy

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