Hi dmwimett,
Thank you for the donation.
Ever thought of getting a more comfortable couch? If not, it is time to consider it as the problem might take some time to resolve and be prepared to spend some time on the couch.
Symptoms indicates a possible fault with the Vehicle Speed Sensor (VSS) which can cause harsh engagement of shifts.
The inaccurate speedometer reading and the inoperative cruise control are indications the VSS could be malfunctioning. When improper speed signals are sent to the Power control Module ( PCM), shifting becomes erratic and /or harsh.
VEHICLE SPEED SENSOR (VSS)
1. Faults in VSS or circuit should set diagnostic trouble code. Disconnect VSS electrical connector if diagnostic trouble code has not been set.
2. Using DVOM, measure resistance between sensor terminals. Replace sensor is resistance is not 190-250 ohms. If sensor is 190-250 ohms, additional circuit testing have to be performed.
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Tuesday, April 13th, 2021 AT 1:45 PM