Engine lacks power, unable to pull codes, CIL light is on. - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-12-2008, 04:57 PM   #21
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The ignition control module (ICM) & fuel pump both get power from a fuse under the dash on passenger side. IIRC it'* fuse #6 - try pulling that fuse & check it with a meter. Sometimes it'* hard to tell their blown just by looking.

The ICM (module under coils) gets power from the pink wire on the harness. Disconnect that harness & check for 12 volts with the key on.

I'll send you some wiring diagrams while you check that fuse & wire.
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Old 05-13-2008, 08:53 AM   #22
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Thanks. I won't be able to get back over to the house until this weekend. I am off tomorrow due to hour cut backs so maybe I can get over there then.
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Old 05-13-2008, 12:52 PM   #23
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Could you go ahead and send the schematics to me before tomorrow so that I'll have them when I get over there? Or did you already email them to me? I am at work now and can't access my email so that is why I ask.
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Old 05-13-2008, 01:42 PM   #24
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Diagrams were sent last night.

99% of the time no-spark is caused by:
Bad crank sensor
Bad ICM
No power or ground to ICM
Bad ICM wiring harness
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