CODES

1998 GMC Sierra

Tiny

ED JONES

April, 19, 2010 AT 10:51 AM

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

FOUND 23 RELATED QUESTIONS

Engine Code P1870

16 ANSWERS
1 IMAGE

P1870

1 ANSWER

4 Answers

Tiny

nosyjme

July, 9, 2012 AT 3:31 AM

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

rasmataz

July, 9, 2012 AT 3:47 AM

Nosyjme: Go to this link for more information :http://www.obd-codes.com/p0430

Tiny

nosyjme

July, 9, 2012 AT 7:29 PM

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?

Tiny

rasmataz

July, 9, 2012 AT 8:46 PM

Dunno -could be an exhaust leak, O2 sensor or the Cat. Check/Test the downstream oxygen sensor

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