After adjusting rear brake as per the manuel brake still has little effect cable is tight and not bottomed out

Brake fluid level up to par? Master cylinder working? Bleeding necessary? Wheel brake cylinder no good?

depending on the year,make and model of this car you will need to loosen the rear shoes a bit or loosen e-brake cable adjustment,

A few questions here, will car roll easy if on a small incline? or is the problem just that the e- brake is hard to push?

Bad cables may give the effect that brake is too tight but the cables get rusted and so does the e-brake hardware causing a hard e-brake handle or pedal, does the e-brake work when applied?

The brakelight fuse and the switch on the pedal is only for the brake lights. It should have no effect on the dash brake light. That light is to alert you that a problem exists in your braking system, not the brake lights. I think you will have to pull off the rear drums and investigate why they are locking up. Check for a leaking brake wheel cylinder that may have contaminated the brake shoes, causing them to grab and lock up. Are the shoes in good shape? Also, check the operation of the emergency brake. Maybe it is not releasing fully. The emergency brake can be adjusted on the cables somewhere underneath the truck, probably at the equalizer (where the cable for the emergency brake splits to both sides of the truck). The adjusting nut will have a lock nut tight against it to hold the adjustment. Loosen the lock nut, then turn the adjusting nut one way to loosen the cable, and the other way to tighten up the cable. You might want to loosen it up and see if that has any effect, and then tighten it once you have fixed the problem. The adjustment would be about right when the emergency brake handle or pedal locks up the rear brakes when it is depressed about halfway to nearly fully depressed.
Hope this helps you out, and good luck.

OK, if the hand brake is too high and is not holding the car on a hill, then the rear brakes should be adjusted. If the brakes in the rear are adjusted tightly, the hand brake should return to normal operation. If not, then the cable will have to be shortened by twisting the adjusting nut (or screws) to tighten due to a stretched cable.

Good luck on this repair.

The parking brake on your envoy is like a small set of drum brakes mounted inside the "hat" of your rear rotors. To adjust it, remove the rear wheels and remove the rubber cap on the rotor. If you don't have a rubber cap look at the brake backing plate and look for an access plug. Rotate the rotor and look inside towards the top or bottom for a star wheel. Rotate the star wheel like you would if you were adjusting drum brakes. You want a very small amount of drag on the rotor while rotating it. If you get too much drag, rotate the star wheel the opposite direction.

Underneath your vehicle, a steel threaded cable comes from the back of one hub and is joined by a short cable from the other hub--then the original cable runs to a threaded end with an adjuster nut in it--and one smaller nut on the end outside of that--(this is the equalizer bar)--you'll see it real close to your transmission.
You might have to jack-up the back of the vehicle???
Pull the parking brake lever up sharply and then release it.
Pull the parking brake lever to the second click and leave it there. You're looking for a slight drag of the brake shoes when you spin the wheels.
To increase the drag, get under at the equalizer bar and turn the adjusting nut to take up the slack in the cables. Get out and spin the rear wheels if you think it's to tight.
I will say don't be afraid to crank on it for a while as in this case, a little adjustment really does not go a long way. When you think you have the drag right, go back in the car and pull the brake up the the fourth click. At this point the wheels should be locked and you should not be able to turn them even when trying hard. If you can, tighten them up a little more.
Once you've done this, release the brake and make sure the wheels spin freely. If they are still binding due to the parking brake, back off the adjustment a little. And that's basically the whole adjustment procedure.

If it has rear drum brakes jack up the back of the vehicle and pull off a drum click up the adjusting screw on the bottom a little bit say 5 or clicks then try to put drum back on if it goes on really easily pull it back off and adjust another 5 clicks or so go till drum wont go on and back the adjustment the other way useing a screw driver or something to hold the arm off of the adjusting screw so you can turn the screw back the other direction about 3 clicks till drum goes on snug but not too tight do the same for the other side.If you have rear disc brakes you have to adjust the cable going to the brake caliper adjust it tighter by about a half an inch or so at a time then go push on the e brake pedal it will get a little more resistance behind it after it gets a little tighter put a wheel back on and try to turn it with e brake on if you cant turn it release it try to turn wheel again if you can its adjusted some have a cable for both rear wheels adjust both as needed.

Loosen the cable nut at the rear brake, pull the cable until the tension is tight, then tighten the cable nut. Since the parking brake only operates on the rear brakes, your rear pads may be too worn causing the parking brake not to hold. Check the pads first to see if they need to be replaced. Also, the parking brake cable can stretch or break over time. Verify that isn't case since you may need to install a new cable rather than adjust it.

There should be a cable running underneath the car along the rear axle from one wheel to the other that connects to the cable running to the front emergency brake handle.

Follow the cable until you find the adjustment screws and turnbuckle on the cable.

Loosen the screws holding the turnbuckle tight.
Adjust the turnbuckle until the cable is tight.
Test the brake handle and readjust if necessary.

Some cars have auto adjusting rear brakes which will sometimes re-seat by running in reverse and pushing on the brake several times. Try this first!

If none of the above works, you will have to take off the rear wheels and adjust the brakes manual at the wheel hub.

jackiaria

e is a cable under the car that runs from under the driverside firewall towards the rear where it splits to each rear wheel at the split there is a threaded sleeve turn it till it pulls the cable tight but be careful it isnt to tight. if that does not solve it the cable nneds to be replaced or the rear brakes need adjusted or replaced I would visually check the brakes on the rear 1st. most times the brakes are worn out which is why the E-Brake seems out of adjustment.