Question about 1990 Chevrolet C1500
Service engine soon light comes on while driving down the road
When was the last time you replaced the O2 sensor. Most people negelect replacing it every 50K or sooner if it is all short hops.
Posted on Sep 17, 2008
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Posted on Jan 02, 2017
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The RTV seal on the fuel system control modules may allow water to enter into the module. Water in the module can cause a short, which may cause hard starting, a crank-no start condition, or stalling, and the Service Engine Soon light may come on. If the engine stalls unexpectedly, there is an increased risk of a crash. Dealers will replace the fuel system control module free of charge. The recall began on May 18, 2009. The GM recall number is 08411.
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