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The Ghost & the Darkness
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2,273 Posts
Discussion Starter #1
What was the sequence to access the engine diagnostics on the DIC?
 

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13 year owner
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16,384 Posts
Hit the Mode and set buttons when you turn the ignition switch on. Then you can scroll through every thing with the arrow keys.
 

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The Ghost & the Darkness
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2,273 Posts
Discussion Starter #3
Thanks!
 

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Registered
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276 Posts
any way to actually reset, or clear codes, should they come up? i think i might have to purposely leave my gas cap off so i can get a code to play around with
 

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13 year owner
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16,384 Posts
Without a scan tool, You'd have to remove the negative side of the battery with the ignition switch on. This is called an idle re-learn as it'll reset your PCM completely in the process of clearing codes. As such, I recommend following the driving cycle for Idle re-learns that can be found at www.obdii.com for GM vehicles.

Otherwise, the PCM will clear them on it's own. Depending on the severity of the system failure, the PCM will clear the codes after either 3 CONSECUTIVE operating cycles without another failure or 40 CONSECUTIVE operating cycles.

For a failure like removing your gas cap, I believe it's the 3 cycles.
 
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