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The possibilities here are many, and you're not going to narrow it down without doing a diagnosis. Depending on the MY, sensors could be a possibility, poor air intake, loss of compression, spark, or fuel could be a possible reason, ECM failure (if 1987 or newer) could be a reason.. a LOT more info and a lot more diagnosis is needed here.

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9y ago
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9y ago

Dirty fuel filter.Failing fuel pump.


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Q: Why do my suburban keep cutting off?
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