If you're looking to replace a shift solenoid, the cost can vary depending on the make and model of your vehicle. In general, you can expect to pay anywhere from $100 to $400 for the parts and labor involved. Keep in mind that this is just a rough estimate - your actual costs may be higher or lower depending on your specific situation.
If you have a late-model car with an electronically controlled transmission, chances are it uses shift solenoids to control the shifting of gears. These solenoids are located inside the transmission, and over time they can fail due to wear and tear. When this happens, you'll likely notice symptoms like delayed shifting, hard shifting, or even getting stuck in one gear. If you're experiencing any of these issues, it's time to have your shift solenoids checked out by a qualified mechanic.
Once the mechanic has diagnosed the problem, they'll be able to give you a more accurate estimate of the costs involved in replacing the shift solenoids. As we mentioned above, labor costs can vary widely depending on the make and model of your vehicle - so it's always best to get a few different estimates before making a decision. With that said, if you're confident in your mechanic's abilities and you trust their judgment, there's no reason why you shouldn't go ahead with their recommended repair.