Question about 1999 Pontiac Montana
If the cruise control makes the engine seem to run very rough until disengaging it, there could be a problem with the engine itself. As, most cruise control systems just pull on the throttle cable to maintain speed on the highway based on setting the speed with the button.
So, I would look into the engine maybe having an issue with spark plugs, or wires, or another tuneup or mechanical issue.
Cruise Control Cable Removal & Installation To Remove:
NOTE: Ensure that the module strap is not twisted during cable installation
Posted on Oct 11, 2010
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Posted on Jan 02, 2017
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