Question about 1997 GMC Suburban

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In my 1997 gmc suburban the service engine light is on. My father has cleared the code but when I go to fill up with gas it comes back on. Could it be that the O2 sensor is going bad or what could be the problem

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Hi..my name is Keith..and if the Service Engine light comes on..you have an emissions problem..and if someone would retrieve the code number(s)..i can tell you what it is..or you can have like AutoZone to read the code number(s) and they can tell you what it is..and they will do it for free..but it could be something simple ...i hope this has helped..if not please write me back

Posted on Jul 02, 2009

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Gas cap leaking or evaporative emissions control leaking.have it scan.autozone will scan it free.

Posted on Jul 02, 2009

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Can anyone tell me what this is on my suburban?


That is the ODB11 Code Reader Port. When your engine malfunction light comes on, you attach a code reader to that socket and the machine give a P Code. That code tells the problem as stated from the ECM (engine control module.

Most Complete List For Chevy Check Engine Light Codes

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www.troublecodes.net/gm/
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GM Trouble Code Info ... Diagnostic trouble codes may be cleared by disconnecting the battery ground cable ..... VIN T, CHEVROLET Suburban, GMC Suburban.

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Mar 23, 2017 | Cars & Trucks

1 Answer

1999 gmc suburban-smoke comes out exhaust and smells like gasoline


If the check engine light is not on, I would check the fuel pressure regulator and for problems with the fuel return line.
If you have a leaking injector you should get a check engine light and code for a cylinder miss.

Aug 27, 2012 | 1999 GMC Suburban

1 Answer

My check engine light is on my 1999 GMC suburban and the fault code that comes up is related to my crank shaft positioning sensor i have no symptoms of any problems although i do have some acceleration...


the cam pos sensor and crank pos sensor run hand in hand to controll your ignition timing and spark advance among other things. if any of your sensors are triggering a code or codes you should write them all down then clear them. when the light comes on compare what you had to what you have now. if you have one that keeps coming back change it it is probably the problem.

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1 Answer

Check engine light code 442 reolaced gas cap still coming back on after clearing


Then either it's the wrong fuel cap, or you have a leak else where. I'd look under the back at the fuel tank where the fill hose goes to the tank. The tanks like to break there. Most of the time people smell the gas before the light is set, but it may be differant in your case.

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PO305 Code on 2002 Yukon XL 5.3L


You probably have water in your fuel . Use some Stabil healthy dose and then some isopropyl alcohol gas line antifreeze that Will probably fix it . and fill it at a popular gas station , not a little station that only sells a little gas. Its either that or you might have a pluged cattalyitic converter. Try this site . http://www.obd-codes.com/forums/search.php?search_id=active_topics

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1 Answer

"Service Engine Soon"


un plug the batt and turn the switch on and try to start it for 20 sec then reconnect the batt the service engine soon light will be off if ther is no reason for it to be on

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3 Answers

1997 suburban sevice engine light came on


insufficient switching bank 2 sensor 1 that mean the oxygen sensor on the passager side dont change voltage fast enought remove clean it or if it old change it hope it help FIXYA OUR POST thanks pierre

Jul 12, 2008 | 1997 Chevrolet Suburban

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