Chevrolet Cobalt Service & Repair Manual: Wheel Hub R&R
	
		| 
			
				| 1. | Raise and support the vehicle. |  
			
				| 2. | Remove the tire and wheel assembly. |  
			
				| 3. | Remove the brake rotor assembly. |  
			
				| 4. | Insert a punch or drift (1) in the 
				cooling fins of the brake rotor (2), Fig. 1. |  
			
				| 5. | Position the punch or drift (1) against 
				the brake caliper mounting bracket (5). |  
			
				| 6. | Using a breaker bar and the appropriate 
				size socket (4), loosen the wheel drive shaft nut (3). |  
			
				| 7. | Have an assistant apply the brakes. |  
			
				| 8. | Remove the wheel drive shaft nut from 
				the wheel drive shaft and discard. Do not reuse the wheel drive 
				shaft nut. Use new nut only. |  
			
				| 9. | Using tool No. J-28733-B (2), separate 
				the wheel drive shaft from the steering knuckle (1), Fig. 
				2. |  
			
				| 10. | Remove the lower ball joint from the 
				steering knuckle. |  
			
				| 11. | Using tool No. J-2619-A and tool No. 
				J-45341, remove the wheel drive shaft, Fig. 3. |  
			
				| 12. | If the wheel drive shaft seal is found 
				to be defective, replace the seal. |  
			
				| 13. | Remove speed sensor electrical connector 
				(1), Fig. 4. |  
			
				| 14. | Remove wheel bearing-hub bolt (2). |  
			
				| 15. | Remove wheel bearing-hub assembly (3) 
				and spacer (4). |  
			
				| 16. | Reverse procedure to install, noting 
				the following: |  
			
				|  | a. | Torque wheel drive nut to 159 
				ft. lbs. |  
			
				|  | b. | Torque wheel bearing-hub bolt 
				to 85 ft. lbs. |  | 

Fig. 1 Wheel drive shaft nut replacement

Fig. 2 Drive shaft from steering knuckle removal

Fig. 3 Drive shaft replacement

Fig. 4 Front wheel bearing and hub replacement
   Rear
Disc Brakes
	
		
		
			
				1. 
				Raise and support vehicle, then the 
				tire and wheel assembly.
			
		
		
			
				2. 
				Without disconnecting the hydraulic 
				brake fle ...
   
 
   
	
		
		
			
				1. 
				Raise and support the vehicle.
			
		
		
			
				2. 
				Remove the wheel center cap, if equipped.
			
		
		
			
				3. 
				Remove the wheel center cap nuts ...
   
 
   See also:
Chevrolet Cobalt Service & Repair Manual. Component Service
  		Engine Control Module (ECM)
	
		
		
			
				1. 
				Retrieve percentage of remaining engine 
				oil life using a scan tool, then record remaining engine oil life.
			
		
		
			
				2. 
				Remove ECM cover, then disconnect body 
				wiring harness electrical connector from ECM, Fig. ...
   	
 
 
Chevrolet Cobalt Owners Manual
			               
Chevrolet Cobalt Service Manual