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disconect the negative wire from your battery first off. If needed lift your front end so you may comfortably get under the front of your truck, then disconect the wireing harness form the actuator, take an open end wrench and turn out the actuator, install is reverse.. Really simple job should only take 30 minutes total...Good luck

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Q: How do you change a fwd actuator switch on a 1990 gmc truck?
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