Pro Series 51173 51 Receiver - Manual (Page 2)

Installation Instructions
Pontiac Bonneville – All Models, Buick LeSabre – All Models
Buick Lucerne – All Models, Oldsmobile Aurora
Part Numbers:
51173
Wiring Access Location: PC3, PC4
1. Remove exhaust hanger bracket from bottom of frame rail and disconnect from rubber hanger attached to exhaust tail pipe. A
replacement bracket is provided and will be installed later. Return factory exhaust brackets to vehicle owner.
2. Raise hitch into position. Using hitch as a template, drill (2) ½” holes.
Note: On vehicles equipped with heat shield, remove rearmost fastener which secures heat shield to frame rail and discard.
Trim heat shield as shown in Figure 2.
Note: On vehicles equipped with automatic load leveling control, remove rearmost fastener which secures load leveling control
housing to frame rail and discard. Trim load leveling control housing as shown in Figure 3.
3. Lower hitch and fishwire carriage bolts and blocks as shown in Figure 1.
4. Raise hitch into position and install remaining fasteners as shown in Figure 1. Heat shield, if present, will be sandwiched
between frame and hitch side bracket at installation.
5. Attach hanger brackets. Install 3/8-16 x 2” carriage bolt thru square hole in bracket to bottom of frame. Slide rubber hanger onto
3/8” carriage bolt and secure with flanged locknut. Tighten nut against rubber hanger allowing hanger to rotate – DO NOT
OVER TIGHTEN.
Tighten all 3/8 GR5 fasteners with torque wrench to 31 Lb.-Ft.
Rev. A 8-26-09 51173N Sheet 2 of 6 z 2009 Cequent Performance Products
Tighten all M10 CL9.8 fasteners with torque wrench to 53 Lb.-Ft.
Note: check hitch frequently, making sure all fasteners and ball are properly tightened. If hitch is removed, plug all holes in trunk pan or other body panels to prevent
entry of water and exhaust fumes. A hitch or ball which has been damaged should be removed and replaced. Observe safety precautions when working beneath a
vehicle and wear eye protection. Do not cut access or attachment holes with a torch.
This product complies with safety specifications and requirements for connecting devices and towing systems of the state of New York, V.E.S.C. Regulation V-5 and
SAE J684.
3500 LB Max Gross Trailer Weight
300 LB Max Tongue Weight
Do Not Exceed Lower of Towing Vehicle
Manufacturer’s Rating or
Form F206 Rev A 5605
Drilled Hole
Figure 2
Heat shield trim –Passenger
Side Shown
Trim heat shield
Around drilled
hole
Heat shield
Mounting bolt
To be removed
And discarded
Heat
Shield
Tighten all 1/2 GR5 fasteners with torque wrench to 75 Lb.-Ft.
Figure 3
Load Leveling Control Housing
Trim – Passenger Side
Load Leveling
Control Housing
Passenger Side
Frame Rail
Trim Here