Mechanics

WHAT'S A QUAD DRIVER MODULE?

1995 Oldsmobile Achieva • 68,000 miles

I recently had the engines malfunction light to illuminate; I took it to an autoparts store and had it diagnosed. The code said DTC 27 and DTC 28. When I looked inside of the repair manual it was described as Quad Driver module 1& 2 but I dont know what it's pointing to.


Help me too understand the code: please!
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Creator and judge
July 4, 2012.




That's the high-current transistorized switching circuits that drive the ignition coils or injectors. Typically those are inside the Engine Computer but on some GM ignition coil packs they are built into that.

Caradiodoc
Jul 4, 2012.


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