i have a 1998 gmc1500 w/5.7 and i swapped motors same one the old one had a bad head so i replaced motor and now `the new one wont start but it is a spark problem

Asked by Jan 04, 2015 at 09:22 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

i don t know what else to add except for I am gonna go over all the wiring`

1 Answer

5,735

Did you also bring along the ECM and Mass flow air sensor for the new engine?

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