1993 Chevrolet Lumina Owner's Manual - Page 160

Your Driving and the Road If You Do Decide to Pull a Trailer (CONT.) Trailer Brakes Will the trailer brake parts take 3,000 psi (20 650 kPa) of pressure? If not, the trailer brake system must be not used with your vehicle. If everything checksout this far, then make the brake fluidtap at the upper rear master cylinder port. But don't use copper tubing for this.you do, If it will bend and finally break Use off. steel brake tubing. Does your trailer have its own brakes? Be sure to read and follow the Safety Chains instructions forthe trailer brakesso You should always attach chains you'll be able install, adjust and to between your vehicle and your trailer. maintain them properly. And: Cross the safety chains underthe If your vehicle has anti-lock brakes, tongue of the trailer so that thetongue do nottry to tap into your vehicle's will not drop to theroad if it becomes brake system. If you do, both brake separated fromthe hitch. Instructions systems won't work well, or all. at about safety chains may be provided by Even if your vehicle doesn't have antithe hitch manufacturer or the trailer by manufacturer. Follow the lock brakes, don't into your tap vehicle's brake system the trailer's if manufacturer's recommendation for brake system will use more 0.02 than attaching safety chains. Always leave cubic inch (0.3 cc) of fluid from your just enough slack you can turn with so If your rig. And, never allow safety chains vehicle's master cylinder. it does, both braking systems won't work to drag on the ground. well. You could even lose your brakes.