2000 Cavalier
llmensa
01-23-2005, 08:07 PM
The trouble code comes up po420 Catalyst system efficiency below threshold (bank 1) does this mean the converter is no good.
J-Ri
03-06-2005, 02:22 AM
Most likely yes. Also, you posted in the Geo Tracker forum.
Automotive Network, Inc., Copyright ©2026
