Installation Instructions for Cadillac CTS, CTS-V, and STS

Part Numbers:

• 77143
• 24767
• 60830

Wiring Access Location:

• 2003-2004 CTS: PC3
• 2005-2006 CTS & CTS-V: PC3, PC4
• 2005-2006 STS: PC3, PC4

Tools Required:

• Wrenches: 11/16"
• Drill Bits: 1/8", 1/2"
• Sealant

Specifications:

• Max Gross Trailer Weight: 2,000 lb. (908 kg)
• Max Tongue Weight: 200 lb. (90.8 kg)
• Note: Do not exceed the towing vehicle manufacturer’s rating.

Step-by-Step Instructions:

1. Lower Muffler(s):

   • Remove the two (2) rearmost exhaust hangers and one (1) forward exhaust hanger to lower the muffler(s).

2. Prepare the Trunk:

   • Inside the trunk, remove the spare tire cover.
   • Detach the plastic liner at the rear of the trunk by removing four (4) net tie-downs.
   • Remove the spare tire or storage bin for better access to the trunk floor. Use a screwdriver to release the retainer washer and pull the bin upwards.
   • Roll back the carpet and padding to expose the trunk pan.

3. Position Hitch:

   • Carefully raise the hitch into position to avoid scratching the fascia.
   • For dual exhaust models, raise one bracket between the trunk pan and exhaust, and slide the other bracket over the second exhaust.
   • Align the rear edge of the hitch brackets flush with the frame end panel.

4. Mark and Drill Holes:

   • Using the hitch as a template, mark and center punch two (2) holes on each side.
   • Lower the hitch and drill 1/8” pilot holes through the trunk pan. Adjust alignment if needed, then enlarge the holes to 1/2".

5. Install Plates and Bolts:

   • Place the mounting plates over the drilled holes inside the trunk.
   • Insert carriage bolts through the plates and trunk pan. Trim the carpet padding underneath if needed for the plate to sit flat.
   • Important: Seal all drilled holes to prevent exhaust fumes from entering the trunk.

6. Attach Hitch:

   • Raise the hitch into position and secure it using lock washers and hex nuts on the carriage bolts.
   • Torque all 7/16"-14 GR5 fasteners to 50 Lb.-Ft. (68 N*M).

7. Reassemble Trunk Components:

   • Roll the carpet and padding back into place.
   • Reinstall the spare tire or storage bin and retainer washer (use a deep socket for this step).
   • Reattach the spare tire cover and the plastic liner.

8. Reinstall Exhaust:

   • Reattach all exhaust hangers removed earlier.

Hardware List:

• (4) Carriage Bolts: 7/16"-14 x 1.5"
• (4) Lock Washers: 7/16"
• (2) Plates
• (4) Hex Nuts: 7/16"-14

Safety Notes:

• Regularly inspect all fasteners and the hitch ball to ensure proper tightening.
• If the hitch is removed, plug any holes in the trunk pan to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always observe safety precautions and wear eye protection when working beneath the vehicle.
• Do not use a torch to cut access or attachment holes.

Drawbar:

• Drawbar Kit: 3594
• Important: The drawbar must be used in the rise position only.

Compliance:

• This product complies with SAE J684, V.E.S.C. Regulation V-5, and safety requirements of the State of New York.

Additional Notes:

• Check the hitch frequently to ensure all fasteners remain tight.

Installation Instructions for Cadillac CTS, CTS-V, and STS

Part Numbers:

• 77143
• 24767
• 60830

Wiring Access Location:

• 2003-2004 CTS: PC3
• 2005-2006 CTS & CTS-V: PC3, PC4
• 2005-2006 STS: PC3, PC4

Tools Required:

• Wrenches: 11/16"
• Drill Bits: 1/8", 1/2"
• Sealant

Specifications:

• Max Gross Trailer Weight: 2,000 lb. (908 kg)
• Max Tongue Weight: 200 lb. (90.8 kg)
• Note: Do not exceed the towing vehicle manufacturer’s rating.

Step-by-Step Instructions:

1. Lower Muffler(s):

   • Remove the two (2) rearmost exhaust hangers and one (1) forward exhaust hanger to lower the muffler(s).

2. Prepare the Trunk:

   • Inside the trunk, remove the spare tire cover.
   • Detach the plastic liner at the rear of the trunk by removing four (4) net tie-downs.
   • Remove the spare tire or storage bin for better access to the trunk floor. Use a screwdriver to release the retainer washer and pull the bin upwards.
   • Roll back the carpet and padding to expose the trunk pan.

3. Position Hitch:

   • Carefully raise the hitch into position to avoid scratching the fascia.
   • For dual exhaust models, raise one bracket between the trunk pan and exhaust, and slide the other bracket over the second exhaust.
   • Align the rear edge of the hitch brackets flush with the frame end panel.

4. Mark and Drill Holes:

   • Using the hitch as a template, mark and center punch two (2) holes on each side.
   • Lower the hitch and drill 1/8” pilot holes through the trunk pan. Adjust alignment if needed, then enlarge the holes to 1/2".

5. Install Plates and Bolts:

   • Place the mounting plates over the drilled holes inside the trunk.
   • Insert carriage bolts through the plates and trunk pan. Trim the carpet padding underneath if needed for the plate to sit flat.
   • Important: Seal all drilled holes to prevent exhaust fumes from entering the trunk.

6. Attach Hitch:

   • Raise the hitch into position and secure it using lock washers and hex nuts on the carriage bolts.
   • Torque all 7/16"-14 GR5 fasteners to 50 Lb.-Ft. (68 N*M).

7. Reassemble Trunk Components:

   • Roll the carpet and padding back into place.
   • Reinstall the spare tire or storage bin and retainer washer (use a deep socket for this step).
   • Reattach the spare tire cover and the plastic liner.

8. Reinstall Exhaust:

   • Reattach all exhaust hangers removed earlier.

Hardware List:

• (4) Carriage Bolts: 7/16"-14 x 1.5"
• (4) Lock Washers: 7/16"
• (2) Plates
• (4) Hex Nuts: 7/16"-14

Safety Notes:

• Regularly inspect all fasteners and the hitch ball to ensure proper tightening.
• If the hitch is removed, plug any holes in the trunk pan to prevent water and exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Always observe safety precautions and wear eye protection when working beneath the vehicle.
• Do not use a torch to cut access or attachment holes.

Drawbar:

• Drawbar Kit: 3594
• Important: The drawbar must be used in the rise position only.

Compliance:

• This product complies with SAE J684, V.E.S.C. Regulation V-5, and safety requirements of the State of New York.

Additional Notes:

• Check the hitch frequently to ensure all fasteners remain tight.
• Do not exceed the towing vehicle’s recommended capacities.

Warranty Information:

For complete warranty instructions, please download the full installation PDF.

Technical Support:

For technical support and assistance, our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.

Attention:

This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.

Revision:

24767 Rev. A 6/25/2014