01 bonneville se ses light wont leave - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-23-2010, 04:43 PM   #11
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I am sending this post in case schematic was not enough info. for you to understand how to test. I don't know just how knowledgeable you are.

step # 8 using test light connected to Battery voltage test brown wire
step # 9 using DDM check voltage accross both grey wires (Normal is 5 volts)
step #10 wth PCM C1 blue connector disconnected and EGR disconnected using DMM connected to ground (not EGR connector ground) test brown wire for any voltage if there is voltage you have a short to power and needs to be corrected
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