C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Code 26 and 28

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Old Jul 23, 2001 | 02:05 PM
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Quad driver 1
Quad driver 3
Who has had these codes come up and how did u fix them?

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Old Jul 23, 2001 | 05:52 PM
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ttt
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Old Jul 23, 2001 | 07:15 PM
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Can't help alot, but quad drivers are inside the ECM. May or may not be an ecm fault, other things can make the ecm "think" the quad drivers have gone TU.

Know that's not much help, but at least it puts the post ttt. Got to be someone that knows those codes on an LT-1.

Good Luck,

Pete

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Old Jul 24, 2001 | 10:23 AM
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Thanks pete. anyone??

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Old Jul 24, 2001 | 03:56 PM
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Old Jul 24, 2001 | 05:29 PM
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Code 26 ECM detected the wrong potential voltage at the #1 quad-driver module circuit for 20 seconds

Code 28 ECM detected the wrong potential voltage at the #3 quad-driver module circuit for 3 seconds.

http://www.batauto.com/articles/egr.html

[This message has been edited by stavanger (edited 07-24-2001).]
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