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Old 10-12-2008, 03:52 PM
ATC mechanic ATC mechanic is offline
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Question 1997 sierra 3500 timing?

is there a wire that needs to b pulled to set the time right on a 1997 GMC sierra 454 automatic trans.??
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Old 10-12-2008, 08:55 PM
wafrederick wafrederick is offline
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Re: 1997 sierra 3500 timing?

No,a scan tool is required and the distribitor is set with a scan tool.Go into the data stream looking for cam sensor retard and the spec is zero degrees.There is a cam sensor inside the distribitor which helps fire the fuel injectors.
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