I have a 98 GMC pick-up 305 v-8. When there is snow on the ground and you try to come to a stop and your on the brakes the back wheels keep spinning and won't stop untill you put it in neutral. I't just keeps trying to drive. the parking brake light is also on too and also when you go from drive to park the tranny grinds.
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If the brakes are stopping the jimmy, it could be a hydraulic problem. check brake fluid level in master cylinder. If it is overfilled, fluid can expand when fluid heats up and can apply brakes. also,bad brake hose can trap pressure in caliper and apply brakes. Also check brake pedal and booster adjustments. other possibility is caliper/hardware (mechanical) is hanging up and not releasing. If drum brake in back, check adjustment and/or stuck wheel cylinder.
I'm an electrical engineer, I checked the electrical diagrams and verified that there is no problem in the rear lamp assembly or wiring. With the light assembly unplugged, I can actually watch the blinker and brake signals operate with a voltmeter. The Tail light works OK.
It simply won't provide enough current to light the bulbs.
I'm afraid that it's melted one of a pair of normally closed contacts inside the blinker switch that feed the brake and turn separately on each side.
Does it have a trailer hitch and wiring? If so, check to make sure connector is not shorted out and double check your fuses and/or replace fuse. It may look good but I've seen some that were burned out of inspection view. You might also want to trace wiring back to brake lights, just in case snow or build up pull connectors apart.
Electronic Stability Control,works opposite to abs,in that,it stops the wheels from spinning on loose ground/snow by applying the brake to the wheel that is spinning.TURN IT OFF.you WANT the wheel to grip not brake.and as far as being poor on hills, the toureg (amongst loads of other makes of 4x4s),is NOT designed for snow/off road,the four wheel drive just ENHANCES grip/handling on tarmac.(try a Subaru on a track/off road rally).
There is a short somewhere between the switch and the brake lights. I would inspect the light holders very carefully. This would be the first place that corrosion could start because of water and weather. After that you would have to follow and inspect the wiring. Has it been pinched, crushed, kinked or damaged?
Have you tried to reconnect one light and push pedal? Is problem common to both?
Being an electrical tech I would measure the resistance on the wiring to ground, should read infinity (no contact). Good luck!
It's unlikely the turn signal switch. Try disconnecting the switch mounted directly above the brake pedal. If the light turns off the problem is in the brake switch. They commonly go bad and can be picked up at a gm dealer for about $15.
First, check the brake light switch, and if the high level light is on, the brake light switch is the likely problem. Even if it isn't, the bulbs could be burnt out. Anyway, disconnect the wire harness from the brake light switch on the brake pedal. If the lights go out, replace the switch. To test the light switch, disconnect the wire harness from that (with the switch in the "off" position). Again, if the lights go out, this is the problem. More likely, it is the brake one. This happened on my Dodge twice.