Question about 1999 GMC Sonoma
99 Sonoma. Occasionally would "shudder" when starting to drive, usually up to around 30km/hr. Would eventually stop. Today in heavy rain did it again, then after going through large puddle the engine light now on. Ideas?
Being Sunday I can't get code read. Hoping to tomorrow if I can find a free read. Being recently unemployed this is the last thing I need!
HAD A SIMILAR PROBLEM A COUPLE OF YEARS BACK.
THE SHUDDER INITIALLY MADE ME THINK DRIVELINE..U -JOINTS..
TURNS OUT IT WAS ELECTRICAL.
MY SPARK PLUG WIRES.
COULD BE THAT OR YOUR PCM/ECM.IS ALLOWING MOISTURE IN, BAD SEAL.
IF YOU TRY THE WIRES, GET GOOD ONES AND SLEEVE THEM.
A CODE READER IS THE WAY TO GO WITH THE PCM/ECM.
SOME MANUFACTURES DON'T LOCATE/ PROTECT THE PCM/ECM ANYWHERE NEAR ENUFF FROM EXPOSURE TO WATER, ROAD SALT/MOISTURE.
IF YOU GO THAT ROUTE
GET GOOD ONES AND MAKES SURE YOU SLEEVE THEM.
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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