Automotive problems are often difficult because pinpointing the source of the issue is complicated, but if your transmission has been acting up recently, it is almost always the gearbox that is to blame. In order to fully diagnose the problem though, you will need to remove your car's gearbox and inspect each part one-by-one to perform a full-fledged do-it-yourself fix. To help you complete this, the list below contains all of the steps you need to properly remove the gearbox.

1. Set Up Your Workspace

Technically this could be step zero, but you might need reminding to ensure your car is in park (with the parking brake on), on a flat surface, and with the negative battery cable unattached to prevent any possibility of your transmission turning on.

2. Removal of Handles and Plates

First, locate the gear shifter handle in your vehicle and unscrew this part (generally in the counterclockwise direction) until it fully comes off. If your car is equipped with a shifter trim plate that goes around the gear control, this should be taken off as well. You may need to consult your vehicle's manual for specifics since each make and model is assembled slightly differently.

3. Jack Up

At this point, you will need to use a floor jack to prop your vehicle up securely to allow you easier access to the working parts underneath.

4. Locate the Gearbox and Remove Wiring

After finding your car's gearbox and transmission, carefully remove any cables or wiring that connect it to the speedometer or underbody of the car. It is also a good idea to label these wires with a piece of tape so, upon reassembly, you know which part attaches where.

5. Remove Bolts

All-wheel drive vehicles generally have a transfer case attached to the transmission, so if this description fits your car, remove this part as well by loosening the bolts holding it in place. Shifters should also be removed at this stage.

Then, you can unscrew the main bolts that mount the transmission as well as the crossmember that attaches the assembly to the mainframe.

6. Taking out the Transmission

Because of the sheer size and weight of a car's transmission, you will need a transmission jack to hold the part up once it is removed from your vehicle. Once this is done, you can locate the gearbox, remove the bolts holding it in place, and remove the part to further your troubleshooting process. And with that, your successful gearbox removal is complete.

For more information, contact companies like Gearbox Express.