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93 GMC K2500 - O2 cat reducing NOx?
Posted to Emissions Forum on 5/31/2005 7 Replies

OK all. This vehicle is FIXED already. Im just...trying to remember all the things Ive forgotten I havent learned over the years when it comes to weird stuff.

Truck comes in failed at local TEST ONLY. Failed for Timing at 20 degrees, and NOx at 1700ppm (Limi... Login to read more.

7 Replies Received (View Replies)