Question about 1998 GMC Sonoma

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I have a 1998 GMC Sonoma 4.3 LV6 AT.

Service engine soon started flashing while driving. Truck started to run rough, light stayed on (but stopped flashing) at idle. Stalled at light. Started back up and ran rough while I nursed it home

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  • Will Waters
    Will Waters Jan 01, 2014

    ok code said #2 cylinder misfire. Replaced #2 plug and wire. replaced cap and rotor. no change

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  • 24 Answers

Cpuld be bad ignition wires, plugs. Dirty air filter. Plugged up fuel filter. Message me if intrested and I'll tell you how to check.the codes yourself using a paperclip.

Posted on Jan 01, 2014

  • Will Waters
    Will Waters Jan 01, 2014

    ok thanks...gonna try easiest to hardest in order. i am nowhere near a mechanic but i can probably handle replacing the plugs and wires

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SOURCE: Truck losing power and service engine soon light on

Like to other guy said, give it a tuneup. Also try SEAFOAM to clean carb up of slug. Also check to make sure the butter fly for the choke has not come loose, causing it the choke it down. Failed choke pull-off.

Posted on Feb 02, 2009

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