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Fill Plug Drain and fill plug leaks are usually caused by a loose plug. These leaks can by repaired by either Other leaks such as axle tube to differential carrier housing or porosity leaks require the LIMITED SLIP DIFFERENTIAL DIAGNOSIS Limited Slip Differential Diagnosis Step Action Values Yes No 1 Did you review the general description - Go to Step 2 Go to Diagnostic 2 Measure the rotational force of the axle 1. Block the front wheels. 2. Raise and support the vehicle. Refer to Lifting and Jacking the 3. Remove the tire and wheel. Refer to Tire and Wheel Removal and 4. Using the J 28733-B Front/Rear Spindle Remover, measure the 5. Repeat the procedure for the other axle. 22-271 N.m (30-200 lb ft) Go to Step 3 System OK 3 Repair the rear axle. - Go to Step 4 -
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
LOCKING DIFFERENTIAL DIAGNOSIS 1. Place the vehicle on a frame-contact hoist, allowing free rotation of the rear wheels. 2. Hold 1 wheel stationary. Slowly rotate the other wheel approximately 1/2 revolution per second in both the forward and reversed directions. The wheel should rotate freely. The 3. Raise the hoist to maximum height with 1 person in the vehicle. 4. Start the engine. Ensure that the engine is operating at low idle speed (warm engine). 5. Apply the service brake. Place the automatic transmission in drive. Depress the clutch and place the transmission in first gear with a manual transmission. 6. Lock 1 rear wheel by pulling one parking brake cable from under the vehicle with the aid of an assistant. 7. Release the service brakes or disengage the clutch slowly enough to start the free wheel turning. The locked rear wheel remains stationary. 8. Increase the speed of the free wheel. The differential will lock, causing the rotating wheel to stop or both wheels to turn at the same speed. The engine, if equipped with manual 9. Lock the opposite rear wheel and repeat the procedure. LOCKING REAR AXLE DOES NOT LOCK 4 Operate the system in order to verify the - Go to Step 2 System OK Checks Action Little or no preload on the Replace the governor assembly and the latching bracket. Refer Flyweights in the governor Replace the governor assembly and the latching bracket. Refer Locking Differential Assemble (9.5 Inch Axle) . The drive teeth on the Replace the cam plate, the governor assembly, and the latching
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
LOCKING REAR AXLE LOCKS IN TURNS governor or cam gear bracket. Refer to the following: Locking Differential Disassemble (8.6, 9.5LD Axles) Locking Differential Cam Unit Disassemble (9.5 Locking Differential Cleaning and Inspection Locking Differential Cam Unit Assemble (8.6 Inch Locking Differential Adjustment (8.6 Inch Axle) or Locking Differential Assemble (9.5 Inch Axle) Broken clutch plates Replace the clutch plates and the wave spring. Refer to the Locking Differential Disassemble (8.6, 9.5LD Axles) Locking Differential Cam Unit Disassemble (9.5 Locking Differential Cleaning and Inspection Locking Differential Cam Unit Assemble (8.6 Inch Locking Differential Adjustment (8.6 Inch Axle) or Locking Differential Assemble (9.5 Inch Axle) Checks Action The governor assembly is Free up the governor assembly. Refer to Locking Broken or weak governor Replace the governor assembly and the latching bracket. Refer The flyweight in the Replace the governor assembly and the latching bracket. Refer
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
LOCKING REAR DRIVE AXLE CHATTERS IN TURNS NOISE IN ADDITION TO NORMAL CLUTCH ENGAGEMENT governor assembly is stuck to Locking Differential Disassemble (8.6, 9.5LD Axles) The cam plate or the Replace the cam plate, the governor assembly, and the latching Locking Differential Disassemble (8.6, 9.5LD Axles) Locking Differential Cam Unit Disassemble (9.5 Locking Differential Cleaning and Inspection Locking Differential Cam Unit Assemble (8.6 Inch Locking Differential Adjustment (8.6 Inch Axle) or Locking Differential Assemble (9.5 Inch Axle) Checks Action Lubricant is contaminated Drain and flush the axle housing thoroughly. Refill with the The clutch plates are Replace the clutch plates. Refer to Locking Differential Checks Action The clutch plates are broken Replace the clutch plates. Refer to the following: Locking Differential Disassemble (8.6, 9.5LD Axles) Locking Differential Cam Unit Disassemble (9.5 Locking Differential Cleaning and Inspection
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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