2003-2004 Cadillac CTS GM Rear Axle Differential Carrier Assembly

Price list

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Additional information
Fit In Five Steps
Question & Answers

Specification

Brand	Cadillac OEM, General Motors
MPN	19178780, 25766296
Year	2003, 2004
Make	Cadillac
Model	CTS
Trim	Base Sedan 4-door, Luxury Sedan 4-door, Luxury Sport Sedan 4-door, V Sedan 4-door
Engine	3.2L 197Cu. In. V6 GAS DOHC Naturally Aspirated, 3.2L 3175CC 194Cu. In. V6 GAS DOHC Naturally Aspirated
Placement on Vehicle	Rear
Fitment Type	Direct Replacement
Warranty	1 Year
Part Number	19178780, 19181232, 25766296, 440-01374
Condition	New, Used

Fit In Five Steps

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How to replace a Cadillac CTS GM Rear Axle Differential Carrier Assembly?

1.Secure Vehicle

Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example, latex gloves or closed toe shoes. Secure the vehicle on a level surface, making sure your vehicle will not roll or lean when jacked up. Break the rear wheel lug nuts loose but do not remove. Using a floor jack, lift up the rear of your vehicle. Secure the vehicle with jack stands on both sides for safety before starting any work. The pinch welds or the frame rails are the two best locations. Do not rely on the jack to hold the vehicle up while working.

2.Locate & Remove Differential Cover

Remove the lug nuts. Remove the rear wheels. Locate and place an oil pan under the rear differential. Remove the differential cover and drain the gear oil. Inspect for any metal flakes and damage in the differential.

3.Remove the Old Differential

Remove the brake drums. Unbolt the retaining flange that is holding the axle seal, bearing, and collar in the axle. Slide the axle out of the axle tube. Repeat for the other side. Remove the differential carrier. Be careful not to damage the gasket sealing surface when removing the unit. Place both R and L bearing assemblies and shims in sets with the marked differential bearing caps so they can be reinstalled in their original positions.

4.Install the New Differential

Inspect the differential carrier housing for foreign material. Check the ring and pinion for chipped teeth, excessive wear and scoring. Check the carrier bearings visually and by feel. Clean the differential housing and replace, as necessary. Install the differential carrier. Check the carrier bearing preload and ring and pinion backlash, and adjust as necessary. Tighten the differential bearing cap bolts to manufacturer’s specified torque. Reinstall axle into the axle tube. Spin the axle until the splines match up with the gears in the differential; the axle should slide all to way into position. Tighten axle retaining flange. Repeat for the other side.

5.Reinstall Removal Parts & Test Drive

Install the carrier cover using a new gasket. Tighten the carrier bolts to the specified torque. Add the proper type and amount of gear oil to the axle assembly. Reinstall the brake drums. Reinstall the wheel. Torque lug nuts to manufacturer’s specifications. Road test the vehicle and look for leaks to verify the rear differential repair.

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