GMC Troubleshooting Questions? Ask a Mechanic for Answers
Have you already removed the wiper arms and then run the motor and let it park (go all the way down), then shut the wiper motor and the car off and install the arms in the park position?
What year model of car do you have?
Did you use a dealer replacement motor or aftermarket? I have heard of numerous mechanics using aftermarket motors on this model that don't park correctly, but they don't drop down into the cowl, they just stop in the middle of the windshield.
You could test the new motor's park switch:
1. Verify the bellcrank on the wiper motor to transmission is not worn or damaged.2. At the wiper motor, verify a good ground on the Black wire. If OK, backprobe the Yellow wire at pin 1.3. The Yellow wire should have less than 0.20 volts at key on, engine off when the wipers are in the park position (low on the glass).4. If the voltage is greater than 0.20 volts, replace the wiper motor assembly for a failed park switch.
I don't know if you could get it on there wrong. Here is a diagram on installing it if that helps.
I just wanted to see if you need more help. Please don't forget to rate.
Please let me know if you need any additional information. Don't forget to rate (that's how we experts get paid).