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GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat
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catalytic converter possible malfunction due to misfire or cracked manifold
erocU2
on Jan 24, 2020
Jul 21, 2020
07:29 PM
by
CathedralCub
6
624
Pontiac
2003 SSEi clogged catalytic converter
psalmist56
on Jun 23, 2016
Aug 6, 2016
07:35 AM
by
Mad_Coachman
7
3,780
2000-2005
p0420 thoughts
Anything4APontiac
on Jul 18, 2012
Jul 18, 2012
08:29 AM
by
2kg4u
2
1,575
2000-2005
Yet again another SES light on 2001 Bonnie
(
1
2
3
4
)
Stinger357
on Jan 7, 2010
May 18, 2010
10:16 PM
by
sawgunner
30
3,980
2000-2005
P0420
Danthurs
on Sep 24, 2009
Sep 24, 2009
07:15 PM
by
Danthurs
0
7,722
OBD-II Trouble Shooting
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