Trailer Tow Prep Group (requires I-6 engine)

• 3.73:1 axle ratio
• Mechanical cooling fan
• Trailer tow wiring assembly

Never overload your vehicle beyond these design capacities. DaimlerChrysler cannot be responsible for brake performance if the Jeep vehicle and hydraulic brake systems are in any way connected. Do not interconnect the hydraulic brake system of your vehicle with that of the trailer. This could cause inadequate braking and possible personal injury.

When pulling a heavy load or driving a fully loaded vehicle use a premium unleaded fuel to help prevent spark knock. If spark knock persists, lighten the load. Otherwise, engine piston damage may result.

Be sure a trailer is loaded heavier in front, about 4% of Gross Trailer Weight (GTW). Loads balanced over the wheels or heavier in the rear cause the trailer to sway severely side to side which will cause loss of control of the vehicle and trailer. Failure to load trailers heavier in front is the cause of many trailer related accidents.

Gross Trailer Weight (GTW) means the weight of the trailer plus the weight of all cargo, consumables and equipment loaded on the trailer when in actual underway towing condition. The best way to measure GTW is to put your fully loaded trailer on a vehicle scale. The entire weight of the trailer must be supported by the scale.

A separate brake system for all trailers weighing over 1,000 pounds gross is recommended. (State laws should be checked for trailer brake requirements.)

Do not connect a trailer lighting system directly to the lighting system of your vehicle. Use an approved trailer wiring harness. Failure to do so could damage the vehicle electrical system and/or result in personal injury.

When hauling cargo or towing a trailer, do not overload your vehicle or trailer. Overloading can cause a loss of control, poor performance or damage to brakes, axle, engine, transmission,steering, suspension, body structure or tires.

Make certain that the load is secured in the trailer and will not shift during travel. It is recommended that any hitches installed on your vehicle be factory installed, or installed by a dealer using factory approved parts. Factory approved parts are specifically engineered with your vehicle’s performance in mind, including the possibility that it will be involved in an accident. Other hitches may not have been so engineered. Vehicle performance, including vehicle damage in an accident situation, may therefore be different.

If trailer towing is required and your vehicle is not equipped with a trailer tow package, the Mopar accessory towing harnesses are the only approved method to provide for trailer lights. These harnesses are designed to provide current to the trailer lights but bypass the module designed to monitor tail lights. Refer to the package instructions for details.

See your Owner’s Manual for additional important information regarding proper operation of this vehicle.

The proper installation of Hitch Packages and other towing equipment is extremely important. Mopar Hitch Packages are designed and tested to ensure a proper match with DaimlerChrysler Corporation vehicles, and install easily using existing vehicle frame holes. However, failure to completely follow the installation instructions and procedures can cause hitch failure which could result in personal injury and/or vehicle damage. Beware of some aftermarket installers who could mount hitch packages that have a higher towing capacity than the vehicle can manage.

NOTE: Do not connect a trailer lighting system directly to the lighting system of your vehicle. Use an approved trailer wiring harness. Failure to do so could damage the vehicle electrical system and/or result in personal injury.

Factory receiver kit

Mounting location

Trailer plug types

Includes:

1x Hitch assembly
2x Braces
2x Bolt and cone washer assemblies
1x 4-way adaptor kit
1x Receiver cover
6x Push-pin retainers
4x Hex flange locknuts
1x Instruction sheet

• Requires installation Bezel and P/N 82206958 Harness, sold separately.
  
• 5,000-lb tow rating and 750-lb tongue weight w/6-cyl engine.
  
• 6,500-lb tow rating and 750-lb tongue weight rating w/V8 engine.
  (w/weight distributing equipment; otherwise 2,000-lb tow rating, 350-lb tongue weight rating.)
  
• Does not include ball mount or hitch ball, 2.0" opening.

Note: This harness is discontinued from Jeep but may be available on Ebay or other web sites.

For more information on trailer brake controllers, see section below.

Installation sheet

Electronic brake controllers are available from companies such as Tekonsha. For 2001 Grand Cherokees that came with the tow package, a pre-assembled wiring harness is available that plugs directly into the blue connector that is supplied underneath the dash. For all other Grand Cherokee WJ models (1999-2000 and 2002-2004) four wires from the brake controller must be connected to the vehicle wiring:

1. Power (connects to vehicle constant 12V+, with 20A or 30A in-line circuit breaker at power source. The circuit breaker is usually not supplied with brake controllers and needs to be purchased separately).
2. Ground (connects to vehicle chassis Ground)
3. Brake lamp switch output (connects to Pin 5 tan/white wire on the vehicle brake lamp switch)
4. Trailer brake controller (blue wire, connects to provided blue wire inside left cowl trim panel. This wire runs from the front cowl to the rear 7-pin trailer connector)

1. Liftgate opening upper trim piece

Upper trim piece back view

1. Remove the liftgate opening upper trim panel piece. The trim piece is held in place with four spring clips. Grab the edge closet to the front of the vehicle and carefully pull it down a enough to release the spring clips, working from one side to the other. Tilt it down from the front and pull it back to disengage the four headliner support tabs.

2. Left trim cargo hooks

3. Lower trim phillips screw

4. D-pillar upper trim

2. Remove the two metal cargo net hooks that are attached with phillips screws.

3. Remove the left phillips screw on the lower liftgate opening trim piece. This will allow the cargo area left trim panel to be slid out from under the lower liftgate trim piece.

4. Remove the D-pillar upper trim piece by grasping it at the top and pulling outward. It is held in place by two strong spring clips and two alignment pins.

5. Grab the left trim piece starting at the top left corner and pull outward to release the spring clips. It will require a firm pull in a couple locations. The trim can now be pulled back far enough to gain access behind it for the trailer tow wiring harness. If you would like to remove the entire trim piece, fold down the left side rear seat and the trim can be pulled all the way off. There is one other snap clip towards the front of the trim to release, and it can then be pulled out from under the door sill trim.

Reinstalling the trim panel:

1. Start at the narrow end towards the front of the vehicle and seat the trim edge under the door sill trim. Work the trim into place going towards the back. Make sure along the way that all of the plastic guide pins and metal spring clips are aligned properly to their slots before pressing it back into position.

2. Reinstall the small upper D-pillar trim piece. Be very careful that the two plastic tabs are aligned, and also that the spring clips are aligned before pressing them into place. Once aligned a quick pound or two with your palm opposite at clip area will secure it to the vehicle.

3. Reinstall the liftgate opening upper trim piece. Fit the plastic clips into place around the headliner edge and align the four spring clips as you work from one side to the other, pressing them into position.

4. Reinstall the liftgate open lower trim phillips screw, making sure the trim is aligned properly.

5. Confirm that the liftgate opening rubber seal is positioned over the quarter panel trim piece along the entire edge, and also along the top edge of the liftgate opening where the long trim piece was reinstalled.