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Q: when should the timing chain be service/replaced on 2003 silverado 2500 hd 6.0 on 2003 Chevrolet Silverado 2500 HD

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when should the timing chain be service/replaced on 2003 silverado 2500 hd 6.0
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The timing chain gets its lubrication from your engine oil and it doesn't require service unless its noisy or affects the performance of the engine
Hello yvonneg,
Same answer for your truck; timing chain should last the life on the engine. Chain doesn't require service or scheduled replacement.
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