Left rear wheel bearing

32 or 33 mm one of the two should fit

I am not familiar with this car, but maybe you need a

hydraulic press

Front wheel drive. Changing the rear bearings is easy. The speed sensor should be easy as it can be located on the transmission and changed from the outside in most cases. For both jobs I recommend the Haynes repair manual on your vehicle.

Yes, Undo the 32mm nut, first. And, don't get the bearings dirty with dust from the brake drums, or , if you do, replace the inner and outer bearings with new greased up ones. REAR DRUM BRAKES Brake Drums REMOVAL & INSTALLATION CAUTION
Brake linings contain asbestos. Asbestos is a known cancer-causing agent. When working on brakes, remember that the dust which accumulates on the brake parts and/or in the drum contains asbestos. Always wear a protective face covering, such as a painter's mask, when working on the brakes. NEVER blow the dust from the brakes or drum.

1. Raise the vehicle and support safely.
2. Remove the wheel and tire assembly.
3. On vehicles without rear bearing hub, remove the dust cap, cotter pin, nut lock, wheel bearing nut and washer from the spindle. Remove the outer wheel bearing. Remove the drum with the inner wheel bearing from the spindle. If the drum is difficult to remove, remove the plug from the rear of the backing plate and push the self adjuster lever away from the star wheel. Rotate the star wheel to retract the shoes. Remove the grease seal.
4. If equipped with a rear bearing hub, remove the drum by removing the retainer screws from the drum and pulling the drum from the hub assembly. If the drum is difficult to remove, remove the plug from the rear of the backing plate and push the self adjuster lever away from the star wheel. Rotate the star wheel to retract the shoes. To install:
   
5. On vehicles equipped without rear bearing hub, lubricate and install the inner wheel bearing. Install a new grease seal. Install the drum to the spindle. Lubricate and install the outer wheel bearing, washer and nut. Adjust the bearing preload following the procedure outlined in the "Rear Wheel Bearing'' of this section. When the bearing preload is properly set, install the nut lock and a new cotter pin. Install the grease cap.
6. On vehicles with rear bearing hub, install the brake drum to the hub assembly and install the retaining screws.
7. Install the wheel and tire assembly. Adjust the rear brakes as required.
8. Apply the brakes until a firm pedal is obtained, prior to moving the vehicle.

don't have topaz. maybe escort will help guide you.

Section 04-02: Suspension and Wheel Hubs, Rear 1996 Escort, Tracer Workshop Manual
REMOVAL AND INSTALLATION Wheel Bearing and Hub Assembly NOTE: Wheel bearings are not serviceable and should therefore be replaced as an assembly with the wheel hub (1104).

Removal

1. Raise and support the vehicle.
   

1. Remove the wheel and tire assembly.
   

1. Remove the hub grease cap (1131) from the wheel hub.
   

1. If equipped with disc brakes, remove the rear disc brake caliper (2552) and rear disc brake rotor (2C026). Refer to Section 06-04 for the removal procedure.
   

1. If equipped with drum brakes, remove the two brake drum screws and the brake drum (1126).
   

1. Unstake the rear axle wheel hub retainer (4B477) securing the wheel hub to the rear wheel spindle (4A013). Remove and discard the rear axle wheel hub retainer.
   
2. Remove the wheel hub from the rear wheel spindle.

The 4 Bolts that Hold the HUB in Also Hold the Backing Plate
Hub Replacement - Rear (Front Wheel Drive/Drum)

Removal Procedure

1. Raise and support the vehicle.
2. Remove the tire and wheel.
3. Remove the brake drum.
   1. Remove and DISCARD the wheel bearing/hub bolts.
   2. Remove the wheel bearing/hub.
   3. Disconnect the wheel speed sensor electrical connector (2).Installation Procedure
   4. Connect the wheel speed sensor electrical connector (2).
      1. Install the wheel bearing/hub. Caution: These fasteners MUST be replaced with new fasteners anytime they become loose or are removed. Failure to replace these fasteners after they become loose or are removed may cause loss of vehicle control and personal injury. Notice: Refer to Fastener Notice in Service Precautions.
      2. Install the NEW wheel bearing/hub bolts.
      • Tighten the NEW wheel bearing/hub bolts to 80 Nm (59 lb ft) .
      1. Install the brake drum.
      2. Install the tire and wheel.
      3. Lower the vehicle.

2001 Pontiac Grand Am 2.4L SFI DOHC 4cyl

Vehicle Speed Sensor - Location:
The speed sensors are built right into the wheel bearings of your vehicle, at the front and rear locations. They work both with the anti-lock brakes and with the traction control systems on the vehicle.

Removal & Installation
Front
The front wheel speed sensor is part of the hub/bearing assembly. Refer to Wheel Hub and Bearing Replacement in Front Suspension for service procedures.
Rear
The rear wheel speed sensor is part of the hub/bearing assembly. Refer to Wheel Hub and Bearing Replacement in Rear Suspension for service procedures.

I hope help you with this (remember rated this help) Have a nice day, good luck.

Too bad I am not at work I could call on a price for a bearing. To be honest that is not too bad of a price on a bearing installed. Most Jag parts need to be purchased from Jag. A typical price for a sealed hub bearing unit is about $140 retail for a chevy corsica(just did 2 on one on monday) to about $300-400 on a ford super duty. and that is not including labor. You need air tools, a torque wrench and lock tight thread locker for this job. And something to remove any corrosion from mounting surfaces
1. jack up car,take wheel off.
2. remove brake caliper
3.remove rotor
4.remove whats holding bearing on. Either one big nut on outside or three to four bolts that hold it to the knukle.
this is how most cars are now,if its rear wheel drive its a peice of cake ,fwd is a little more difficult.

REAR WHEEL BEARING/ HUB

Removal Procedure

1. Raise the vehicle. Refer to Vehicle Lifting in General Diagnosis.
2. Remove the wheel and the tire. Refer to Tire and Wheel Removal and Installation in Wheels, Tires and Alignment.
   1. Remove and support the brake caliper. Refer to Brake Caliper Replacement (Front) or Brake Caliper Replacement (Rear) in Brakes.
   2. Remove the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
   3. Remove the ABS sensor wire connector.
   4. Remove the four bolts from the control arm.
   5. Remove the hub and bearing from the control arm.
   6. Remove the brake shield from the control arm.
   7. Clean the control arm face and the bore before installing the hub and the bearing.
   Installation Procedure
   
   Notice: Refer to Fastener Notice in Service Precautions.
   
   1. Install the brake shield and the hub and the bearing to the control arm with the four bolts. Be careful not to drop the hub and the bearing, as it could be damaged. Reconnect the ABS sensor. Tighten the hub and bearing bolts to 70 Nm (52 ft. lbs.).
   2. Install the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
   3. Install the brake caliper. Refer to Brake Caliper Replacement (Front) or Brake Caliper Replacement (Rear) in Disc Brakes.
   4. Install the wheel and the tire. Refer to Tire and Wheel Removal and Installation in Wheels, Tires and Alignment. Tighten the wheel nuts to 140 Nm (100 ft. lbs.).
   5. Lower the vehicle.