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2002 GMC Savana monitors not ready CA smog test

Tiny
ALHARJ
  • MEMBER
  • 2002 GMC SAVANA
  • V8
  • 2WD
  • AUTOMATIC
  • 78,800 MILES
Vehicle passes emissions tests - no problem

failed the MIL/Check Engine Light due to failure to successfully complete all OBD self tests (monitors not ready - drive at least 80 freeway miles)
Tuesday, December 30th, 2008 AT 7:34 PM

9 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
I'm not quite sure what your problem is. Do you not get a check engine light, or you have the CEL on, but get no codes? I need a little more info so I can help you. Please advise.
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Wednesday, December 31st, 2008 AT 12:55 AM
Tiny
ALHARJ
  • MEMBER
  • 9 POSTS
Passes ASM Emissions test: 25mph@1476 rpm; 13.8%-CO2, 0.5%-O2, HC-1 ppm, CO-0.00%, NO-0 ppm.
Fails Functional check (Malfunction Indicator Light-Fail)
Is there a procedure to reset the MONITORS?
I was told to drive 80 freeway miles then retest.
NO "Servce engine soon light"
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Wednesday, December 31st, 2008 AT 6:15 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
When you turn the key to "on", not start, does the service engine light come on? Usually the monitors will reset themselves after 50 miles or 5 key on/key off cycles.
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Wednesday, December 31st, 2008 AT 9:36 PM
Tiny
ALHARJ
  • MEMBER
  • 9 POSTS
Key "on" only = NO "service engine soon light"
I don't have a OBD II monitor to check
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Thursday, January 1st, 2009 AT 3:27 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Check the bulb in the dash for the CE light. If the bulb is good, I would say that circuit of your ECM is bad.
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Friday, January 2nd, 2009 AT 11:10 AM
Tiny
ALHARJ
  • MEMBER
  • 9 POSTS
SES light - tests OK when key is initially turned on like other dash indicators. Drove some the other day, SES light is out but without a code checker I'm not able to know if everything is OK sensor-wise. Going back to Smog Check to find out Mon.
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Sunday, January 4th, 2009 AT 3:33 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Let us know what you find.
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Monday, January 5th, 2009 AT 7:23 AM
Tiny
ALHARJ
  • MEMBER
  • 9 POSTS
Ended at dealership to replace fuel tank evap. Vent on tank. All "monitors" cleared, aced smog retest.
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Friday, January 9th, 2009 AT 5:55 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Glad to hear it. Anything else, you know where to find us.
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Friday, January 9th, 2009 AT 7:56 PM

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