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They are about 3 to 4 inches long with an electric wire on them. There is 4 of them on your truck and they are screewed into the exhaust pipe system. Start where the exhaust bolts to the engine and you will see 2 of them in that area, Then work your way back the exhaust system towards the muffler and you will see 2 more of them.
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I don't answer questions for free. I work for $108.88 per hour, and your time starts now.
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