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Threads Tagged with p0420

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0171, 05, chevy, codes, gm, hemi, p0171, p0174, p0174p0420, p0420, po171, po171and, po174, po420, silverado, ws6

P0171 P0174 P0420 Help

fastjweb on 05-28-2013

05-28-2013 07:46 PM
by BLK02WS6

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2

4,374

Tuning, Diagnostics, Electronics, and Wiring

2002, 2006, cat, catalyst, efficency, efficiency, gm, gmc, jeep, p0420, p0430, p0430p0420, sierra, system, threshold, truck

My codes: p0420 and p0430

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Multi-page thread

1 2)

blk03 on 01-16-2006

03-02-2012 11:43 PM
by Sefa Aulaumea

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18

16,114

Tuning, Diagnostics, Electronics, and Wiring

2004, 53, codes, diablo, diablosport, disable, hp, p0420, programmer, review, reviews, sport, sports, tech, u7193

1 Attachment(s)

diablo sport u7193 programmer (with hardware upgrade)

CULATR on 11-02-2010

11-10-2010 04:29 PM
by CULATR

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7

2,005

GM Parts Classifieds

02, 0420, 05, 2005, 43, 53, 97, chevrolet, code, dynatech, f150, gmc, p0420, trans, truck, v6

P0420 code and best way to lower?

heybro on 04-19-2010

04-21-2010 11:37 AM
by fastnblu

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7

1,238

GMT 800 & Older GM General Discussion

2000, 2001, 420, 53, avalanche, chevrolet, code, gm, ls1, maf, p0420, po, po420, po430, silverado

P0420 Catalyst Ineficiency Bank 1

blades11b on 12-30-2009

12-30-2009 09:50 PM
by viciousknid

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4

7,124

GM Engine & Exhaust Performance

Question

2000, 43, 96, air, code, codes, gmc, p0420, p0420p0430, p0430, ram, sierra, silverado, threshold, z71

Need Advise on P0420 code on 2000 Z71

chuckmc8 on 07-29-2009

08-02-2009 01:00 PM
by budhayes3

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9

7,116

GM Engine & Exhaust Performance

bad, broken, catalytic, converter, jumpy, lazy, light, o2, off, oxygen, p0420, potential, problem, sensor, srt4, tach

Would a bad catalytic converter cause a lazy oxygen sensor?

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Multi-page thread

1 2)

hirdlej on 06-24-2009

06-25-2009 09:59 PM
by hirdlej

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15

7,244

GM Engine & Exhaust Performance

03, 43, 53, 97, c1500, chevy, code, engine, gm, hills, misfire, misfiring, miss, p0420, sierra, stall, truck

Anyone ever see misfiring cause a P0420 code to be tripped?

hirdlej on 06-08-2009

06-09-2009 04:19 PM
by budhayes3

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7

8,004

Tuning, Diagnostics, Electronics, and Wiring

delete, efi, efilive, lincoln, live, misfire, o2, p0300, p0420, p0430, sensors, silverado, trailblazer, tuning, whipple

2 Attachment(s)

Deleting Rear o2's with EFIlive - HOW TO?

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Multi-page thread

1 2)

foxySS on 09-05-2008

09-06-2008 06:05 PM
by foxySS

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12

10,014

Tuning, Diagnostics, Electronics, and Wiring

Question

p0420, s10, seafoam

1 Attachment(s)

Help Please

bravo1188 on 03-23-2008

03-24-2008 11:45 AM
by jakebdb56

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8

745

INTERNAL ENGINE MODIFICATIONS

1500, 2004, 43l, chevy, code, dynatech, f150, otc, p0420, p0430, po430, shoot, silverado, trouble, v6

got a code with headers...

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Multi-page thread

1 2)

Allgonoshow on 02-12-2008

02-15-2008 05:41 PM
by TURBHOE

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14

1,422

Tuning, Diagnostics, Electronics, and Wiring

0420, 2003, 420, 99, chevy, code, error, gauge, gm, p0420, po420, scan, silverado, trouble, yukon

Trouble Code P0420

Sambo53 on 11-07-2007

11-13-2007 05:26 AM
by mwalls54

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7

11,361

GMT 800 & Older GM General Discussion

2006, bank, catalyst, efficiency, low, p0420, sts, system

STS cat question

Switched on 07-19-2007

07-20-2007 01:09 AM
by cpelton

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2

548

FORCED INDUCTION

1500, 2000, 48, c1500, catless, chevrolet, chevy, code, error, o2, p0420, pipe, sensors, silverado, truck

P0420

97sicksled on 06-15-2007

06-16-2007 12:35 PM
by 97sicksled

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4

1,481

Tuning, Diagnostics, Electronics, and Wiring

04, 420, code, diagnostic, gm, hemi, p0420, p0420p0463, p0463, po, po420, po463

Codes P0420 and P0463 together

Superado on 03-06-2006

03-06-2006 03:26 PM
by Superado

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0

782

Tuning, Diagnostics, Electronics, and Wiring

01, 01blackerado, 1500, 2000, 2005, code, codes, engine, p0410, p0420, p420, po420, powerstroke, silverado, ssr

Threw a code P0420

01Blackerado on 06-16-2005

06-17-2005 05:09 PM
by 01Blackerado

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5

2,295

Tuning, Diagnostics, Electronics, and Wiring

53, headers, p0420

Installing headers and duals this weekend...

Gremlin5.3 on 01-27-2004

01-27-2004 04:05 PM
by Gremlin5.3

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0

484

GM Engine & Exhaust Performance

700mv, p0420

Cats and rear 02 sensors

GREGGO on 12-05-2003

12-05-2003 11:25 AM
by sleepersilverado

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2

686

GM Engine & Exhaust Performance

60, aftermarket, code, exhaust, gmengine, headers, hemi, ls1tech, p0420, silverado

Beware P0420 and aftermarket headers

Tom@SpeedInc on 10-09-2003

10-09-2003 04:27 PM
by XLR8NSS

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2

859

GM Engine & Exhaust Performance

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