Installation Instructions for Chevrolet Silverado and GMC Sierra Pickups (1500/2500 Series, 2500 H.D./3500 Series)

Part Numbers:

• 41544
• 44657

Wiring Access Location:

• PU3

Tools Required:

• Drill with 1/2" Drill Bit
• Wrenches: 3/4", 7/8", 21mm, 22mm

Step-by-Step Instructions:

1. Remove Existing Fasteners:

   • Remove M14 fasteners from the end of each frame rail if present and return them to the customer.

2. Position Receiver:

   • Lift the receiver into position, aligning the slots in the receiver with the weldnuts in the vehicle frame.

3. Install Fasteners:

   • For vehicles with a bumper, install M14 fasteners through the receiver into the weldnuts.
   • For vehicles without a bumper, align the slots in the receiver over the fore/aft slot near the frame end and secure fasteners as shown in Figure 2.

4. Drill Additional Holes (6' Bed Models Only):

   • Using the hitch as a template, drill a 1/2" hole through the frame at the center attachment points on both sides.

5. Install Remaining Fasteners:

   • Secure all additional fasteners as shown in Figures 1 and 2, including spacer blocks, lock washers, and nuts.

6. Tighten Fasteners:

   • Tighten all M14 CL10.9 fasteners to 115 lb-ft (156 N*m).
   • Tighten all 1/2"-13 GR5 fasteners to 75 lb-ft (102 N*m).

Torque Specifications:

• M14 CL10.9 bolts: 115 lb-ft (156 N*m)
• 1/2"-13 GR5 bolts: 75 lb-ft (102 N*m)

Hardware List:

• (4) Bolts, 1/2"-13 x 1.75" GR5
• (2) Bolts, M14 x 2.00 x 45 CL10.9
• (4) Conical Washers, 1/2"
• (2) Conical Washers, M14
• (4) Hex Nuts, 1/2"-13
• (2) Hex Nuts, M14 x 2.00
• (4) Spacer Blocks (17/32" Hole)
• (2) Spacer Blocks (19/32" Hole)
• (2) Lock Washers
• (2) Flat Washers

Safety Notes:

• Frequently check the hitch to ensure all fasteners and the ball are securely tightened.
• If the hitch is removed, plug all holes in the trunk pan or body panels to prevent water or exhaust fumes from entering.
• Replace any damaged hitch or ball immediately.
• Observe safety precautions when working beneath the vehicle and wear eye protection.
• Do not cut access or attachment holes with a torch.

Specifications:

• Weight Carrying (Ball Mount):
  • Max Gross Trailer Weight: 6,000 lb (2,724 kg)
  • Max Tongue Weight: 600 lb (272 kg)
• Weight Distributing:
  • Max Gross Trailer Weight: 12,000 lb (5,448 kg)
  • Max Tongue Weight: 1,200 lb (546 kg)

Additional Notes:

• For vehicles without a factory bumper, it may be necessary to relocate the license plate mounting bracket.
• This product complies with V.E.S.C. Regulation V-5 and SAE J684 safety standards.

Installation Instructions for 7-Way Flat Pin Connector / 4-Flat Combo Adapter Harness

Part Numbers:

• 74682

Tools Required:

• Phillips Head Screwdriver
• Adjustable Wrench

Mounting Bracket Instructions:

1. Determine a suitable mounting point on the tow vehicle for the connector or use an existing mount. Ensure the trailer’s wire harness has sufficient length to reach this point.
2. Secure the mounting bracket on the rear of the tow vehicle or to the plate attached to the hitch cross tube using the self-tapping screws provided.
   • Caution: Do not drill into the hitch cross tube to avoid damage to the hitch or personal injury. Do not drill into any exposed surfaces. Refer to the hitch owner’s manual or instruction sheet for recommendations and limitations.

Socket Instructions:

1. Install the 7-way Blade Socket (connector) onto the mounting bracket using the screws and nuts provided.
2. Plug the OEM factory-equipped car-end socket harness into the 7-way Blade Car Socket.
3. Insert the 4-flat connector into the slot in the bracket.
4. Tighten all screws securely.

Safety Notes:

• All connections must be completed to ensure proper functionality. Test and verify the installation using a test light, circuit tester, or trailer.
• Warning: Overloading circuits can cause fires. DO NOT exceed the lower of the towing manufacturer’s rating or:
  • Max Right Turn, Left Turn, Stop, and Tail Light Circuits: 7.5 amps
  • Max (+) Battery, Reverse, and Electric Brake Circuits: 30 amps
• Consult the vehicle’s owner’s manual and instruction sheet for additional information. Additional fusing may be required.

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.

Warning: Improper use or failure to follow instructions may result in property damage, serious injury, or death. Always consult your vehicle and trailer manuals for compatibility and installation guidelines.