Got a strange cruise control question.
98 GMC Sierra 4x4 had 5.7, but replaced it with a HT383 stroker from GMPP Prior to replacement, cruise worked fine. Post engine swap, cruise takes 2-5 minutes to engage, and does not hold speed on grades. Very erratic operation. No other known issues, engine runs fine. Cruise cabling seems fine.Ideas where to start?
The key phrase is "Prior to replacement, cruise worked fine." I would look for a vacuum leak. Regards, JR
Sounds like the tach signal or speed sensor is screwed up. Which induction and ignition are you using? What other changes were made?
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