1998 GMC SIERRA CODES

  • Tiny
  • ED JONES
  • 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

Do you
have the same problem?
Yes
No
Monday, April 19th, 2010 AT 10:51 AM

4 Replies

  • Tiny
  • nosyjme
  • Member

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!

Was this
answer
helpful?
Yes
No
Monday, July 9th, 2012 AT 3:31 AM
  • Tiny
  • rasmataz
  • Member

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

Was this
answer
helpful?
Yes
No
Monday, July 9th, 2012 AT 3:47 AM
  • Tiny
  • nosyjme
  • Member

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?

Was this
answer
helpful?
Yes
No
Monday, July 9th, 2012 AT 7:29 PM
  • Tiny
  • rasmataz
  • Member

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

Was this
answer
helpful?
Yes
No
Monday, July 9th, 2012 AT 8:46 PM

Please login or register to post a reply.

Similar Questions