Is the rear wiper on my GMC Sierra not working?
Is the rear wiper on my GMC Sierra not working?
Old trucks: 08 GMC Sierra 1500 Z71 Crew Cab, ’03 TB EXT LT I6 Testing the motor is the next thing on my list but Roadie in an earlier post says that the motor is shot in only about 10% of the dead rear wiper problems. In any case, if it is the motor gone south, I will probably hit the junk (oops I mean salvage) yard first for a replacement.
Why is my rear wiper not working on my car?
But the most common cause of a dead rear wiper is broken/flexed wires inside the rubber boot at the liftgate hinge line. Over time, the conductor can break or get intermittent, even if the insulation is intact.
How are rear windshield wipers the same as front wipers?
Rear windshield wipers work exactly the same as front wipers. There is a parking circuit built into the motor that seats the wipers when turned off. A wiper switch and related wiring control the on-off operation and wiper speed.
How can I test my rear wiper motor?
Follow the manufacturer’s guidelines for switch removal and test procedure for each specific wire location and function. Test the rear wiper relay. Before reaching the wiper motor, the wiper switch sends power to a relay. This relay serves two purposes.
What to do if your rear wiper is not working?
Check the bcm (fuse block under rear seat) and check fuse 9. That’s rear wiper Click to expand… Click to expand… That’s an auto-resetting circuit breaker. You can only test it fully with a voltmeter. Swapping with an equivalent neighboring component might help, but if the wiring or socket is the culprit, won’t help as much.
Where is the fuse box located on a GMC Envoy?
Fuse box location Rear Underseat Fuse Block It is located under the rear seat on the driver’s side of the vehicle (tilt the seat up, remove the fuse box cover). Engine compartment fuse box
Why does my windshield wiper not turn on?
It allows a small current signal from the switch to control a large current that powers the wiper. Designers can then use a small dash switch and wiring, keeping the instrument panel less cluttered. The relay also isolates the wiper circuit, which helps keep out wiper radio noise.
Old trucks: 08 GMC Sierra 1500 Z71 Crew Cab, ’03 TB EXT LT I6 Testing the motor is the next thing on my list but Roadie in an earlier post says that the motor is shot in only about 10% of the dead rear wiper problems. In any case, if it is the motor gone south, I will probably hit the junk (oops I mean salvage) yard first for a replacement.
What should I do if my rear wiper is not working?
Probe the voltage supply plug with a voltmeter and make sure voltage and ground are present. Move the wiper function switch through all positions to determine proper voltage at the plug. If there is no voltage, check the voltage supply to the dash switch and check the rear wiper fuse. Remove the wiper switch from the instrument panel.
How does the rear window wiper work on a Chevy Trailblazer?
Also note that the rear wiper/washer control has a “lock out” feature…that’s what I call it. Each time you start up the engine, you have to turn the wiper/washer off and back to on to reset it’s function. GM doesn’t want you to start the engine, and have the wiper come on unintentionally while frozen to the rear window, and burn out the motor.
How do you test a rear wiper relay?
Test for voltage to the switch. Move the switch through its functions and make sure there is voltage present at each plug location. Follow the manufacturer’s guidelines for switch removal and test procedure for each specific wire location and function. Test the rear wiper relay.
What should I do if my windshield wiper doesn’t work?
The arm then holds a rubber squeegee — a wiper blade — that sweeps across the windshield. Each item must be in good order for the system to work correctly. Remove the back cover to gain access to the wiper assembly. Follow the manufacturer’s directions in the service manual. Unplug the wiper motor connector.
How does a rear windshield wiper relay work?
Test the rear wiper relay. Before reaching the wiper motor, the wiper switch sends power to a relay. This relay serves two purposes. It allows a small current signal from the switch to control a large current that powers the wiper. Designers can then use a small dash switch and wiring, keeping the instrument panel less cluttered.
Also note that the rear wiper/washer control has a “lock out” feature…that’s what I call it. Each time you start up the engine, you have to turn the wiper/washer off and back to on to reset it’s function. GM doesn’t want you to start the engine, and have the wiper come on unintentionally while frozen to the rear window, and burn out the motor.
Why are my GMC Envoy key fobs not working?
We have a 2006 Envoy and a while ago the back glass cleaner quit working, then the key fobs stop working and the back hatch wouldn’t open then the fobs would work then quit again. We unlock the door with the and use the button on the door to unlock the other doors but the back hatch still won’t open. Try new key fobs but no luck.
What happens when a windshield wiper relay goes bad?
When the relay is faulty, the windshield wipers will only work at the same speed that the last relay signal was sent. In layman’s terms, if you had your windshield wipers on the slow speed the last time they were active, and you turn them on again under a different setting, the relay switch should send that updated information to the module.
How many miles does a GMC Envoy keyless remote last?
GMC paid for 5 of them, but are now refusing to pay for anymore, as they only warranty the original set for 12 months or 12,000 miles whichever comes first. Has anyone had this problem with these latches? Does anyone know of an outside vendor besides GMC where a person can purchase these latches??
