1994 Chevrolet Blazer Owner's Manual - Page 198
1994 Chevrolet Blazer Manual
Page 198 highlights
Trailer Brakes If your trailer weighs more than 1,000 pounds (450 kg) loaded, then it needs its own brakes - and they must be adequate. sure to read and follow the Be instructions for the trailer brakes so you'll be able to install, adjust and maintain them properly. Your trailer brakes system can tap into vehicle's hydraulic brake system except: Don't tap intoyour vehicle's brake systemif the trailer's brake system will use more than 0.02 cubic inch ( 0 . 3 ~of ) ~ fluid from your vehicle's master cylinder. If it does, both braking systems won't work well.You could even lose your brakes. Will the trailer parts take 3,000 psi (20 650 kPa) of pressure? If not, the trailer brake system must not be used with your vehicle. If everything checks out this far, then make the brake fluid tap the port on at the master cylinder that sends fluid to the rear brakes. But don't usecopper tubing for this. If you do, it will bend and finally break off. Use steel brake tubing. Driving with a Trailer Towing a trailer requires a certain amount of experience. Before setting out for the open road, you'll wantto get to know your rig. Acquaint yourself with the feel of handling and braking with the added weight of the trailer. And always keep in mind thatthe vehicle you are driving is now a good deal longer and not nearly so responsive as your vehicle is by itself. Before you start, check thetrailer hitch and platform, safetychains, electrical connector, lights, tires and mirror adjustment. If the trailer has electric brakes, start your vehicle and trailer moving and then apply the trailer brake controller by hand to be sure the brakes are working. This lets you check your electrical connection at the same time. 4-40