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Re: When did GM begin supporting the misfire DTC group
Posted to Technical Discussion Forum on 12/26/2023 1 Reply

scanner can request whatever info it wants but the ECM can only give the info it has to offer. This shows what DTC every GM ECM can provide. It is year and engine specific

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e.g. on my very own 2002 Blazer (L35 engine) the DTC list jumps from P... Login to read more.

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