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Re: 97 GMC 3500 van , 6.5 ,P01224, injector pump offset
Posted to Technical Discussion Forum on 2/9/2002

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Hi Martin, the code was P1214. I adjusted the "actual timing" to 1 degree with the engine running by turning the pump about an 1/8 of an inch towards the passenger side. The new Offset learn was -.1, ... Login to read more.