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Chevy S10 - GMC S15 and Sonoma Warning lights and trouble codes

76 messages,  Last post on Nov 10, 2009 at 12:39 PM

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#70 of 76 Re: Code 42 on 1991 Sonoma [john266] by engineer_rob Sep 21, 2009 (11:12 pm)
Replying to: john266 (May 20, 2007 9:53 am) The bypass lead from the engine control computer to the ignition module in the distributor is disconnected whenever the base timing is checked or adjusted. (The base timing is checked whenever a 'smog test check' is performed. The connector in my truck is under the carpet on the passenger side just under the dashboard. I am told the location of this connector varies somewhat from locations in the engine compartment to locations in the cab. If you are gettng intermittent 'code 42's' make sure this connector is securely made and that there is no short or break in the wiring. Otherwise it may be necessary to replace the ignition module.
#71 of 76 Re: Trouble codes don't make sense [mpic] by gonogo Sep 22, 2009 (8:37 am)
Replying to: mpic (Jul 30, 2009 4:31 am) If you used factory plugs, coincidence. If not, go back to factory plugs.
#72 of 76 where do i pull codes on a 01 s10 xtreme by 01xtreme Oct 07, 2009 (6:22 am)
#73 of 76 where do i pull codes on a 01 s10 xtreme by 01xtreme Oct 06, 2009 (9:49 am)
my engine check light just came on and car runs the same way before the light. my question is is there a way to pull codes with out buying those expensive diagnostic tools? Replies to this message: gonogo (Oct 07, 2009 6:22 am)
#74 of 76 Re: where do i pull codes on a 01 s10 xtreme [01xtreme] by gonogo Oct 07, 2009 (6:22 am)
Replying to: 01xtreme (Oct 06, 2009 9:49 am) Well you need at least a code reader, all auto parts stores stock them, Walmart too I'm pretty sure.
#75 of 76 1995 GMC Sonoma by seapro Oct 25, 2009 (8:00 pm)
My 1995 GMC Sonoma has brake light problem. Center high brake light comes on but neither taillight comes on. All signal and running lights work. Any help?
#76 of 76 intermittent 'service engine soon' by mikeybike Nov 10, 2009 (12:39 pm)
Hello. I have a '98 S10 with a manual trans & a 4cylinder (2.2?) engine. Ever since I've owned it, the service engine light has gone on for a long time, then suddenly off for a short time, then on again...a mechanic told me it was a code 0404, indicating a need to replace the linear EGR valve, which I did myself. No change, however, except that the light seems to stay off longer than before. The truck unexpectedly dies sometimes after I've driven it all day. Usually starts up right away, but then dies again (all dash lights go off except for the battery light).If it sits for a while,it seems fine again. Could the service light and the dying be related? Brand new battery; checked and cleaned terminals and cables...I'm stumped. Any input would be greatly appreciated. Mikeybike

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