Mechanics

CODES

1998 GMC Sierra

Steering problem
1998 GMC Sierra V8 Four Wheel Drive Automatic 174000 miles

hELLO I have 3 codes and need to know what to get to fix this truck. The first is P1870 2ND P1345 3RD P0430 tHANKS FOR THE GREAT WEB SITE TOOO
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ED JONES
April 19, 2010.




Hopefully you get a reply soon. I have a 2001 GMC Sierra w/273,000 miles and the check engine light is on and it gave us a P0430 code last week. I need to know what to replace so it will pass the smog test!

Tiny
Nosyjme
Jul 9, 2012.
Nosyjme: Go to this link for more information :http://www.obd-codes.com/p0430

Rasmataz
Jul 9, 2012.
Rasmataz: Thank You. I am just wondering because I have the 4.8 ltr, it says "Oxygen storage ability of catalyst (right cylinder bank) below calibrated threshold" Does this mean I can get away with new O2 sensor, and which ones do I replace? Or am I screwed because I cannot afford to replace the Cats?
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Tiny
Nosyjme
Jul 9, 2012.
Dunno -could be an exhaust leak, O2 sensor or the Cat. Check/Test the downstream oxygen sensor

Rasmataz
Jul 9, 2012.

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