2010 SXT. Why do wipers only work on high?

Question edited for clarity. Part of duplicate question added.
Duplicate question deleted.
Question moved to model category.

This says Pulse Board or the Switch

https://www.google.com/search?q=2004+Pontiac+Montana+front+wipers+won%27t+turn+off

This says it does have a relay... but

https://www.google.com/search?q=2004+Pontiac+Montana+wiper+relay

Nothing shows where it is located.

https://www.google.com/search?q=2004+Pontiac+Montana+wiper+relay+location

Relay here

https://www.autozone.com/electrical-and-lighting/wiper-motor-relay

It may not be releasing, you can test if you can find it!

https://www.autozone.com/electrical-and-lighting/wiper-motor-relay

..

The is the symptom of a defective wiper switch.

There are trouble codes listed for your wipers. Did you check for codes? My database shows B type codes. Check for manufacturer specific codes. There are code readers that will check manufacturer specific codes as well as po codes.
https://ibb.co/mQCyqf
Click on the link, that is one of the possible codes listed for wipers. There are several.

Depending on what your trying to do with wipers, I'd want to see voltage on the gray and or purple wire. See the black wire at the bottom that is ground, a good ground is a must. Hey Jeff, I'm not trying to bug you. If I spend time trying to look up info, I'm going to post it. I don't care if the question has already been answered. Have a good day.

Could be the wiper switch. There are few components in the system. The wiper switch is rarely disassembled to repair, it is meant to be replaced.

The wiper motor would usually fail differently. Not shutting off (called parking) is a motor problem. But not engaging high speed is usually a switch problem. It sounds like the switch is a notch off inside and is not touching to cycle off.

There may be some you tube videos which show better details than just texting about this.

Search Results

My windshield wipers only work on high speed...? ' Yahoo Answers

https://answers.yahoo.com/question/index?qid...
Nov 11, 2006 - My windshield wipers only work on high speed. ... If it's the compound switch on the lever on the steering wheel, it can be a bit complicated to ...

Windshield wipers - CarGurus

www.cargurus.com > Questions > Mercury > Grand Marquis

CarGurusMay 19, 2015 - Windshield wipers - My wipers stopped last week and the next day they ... slow or intermitt and only work on high speed and the washer wiper doesn;twork ... The LCM does not effect the operation of the motor or switch it just ...

Windshield Wipers only working at highest setting - Ford Flex Forum

www.fordflex.net > ... > General Ford Flex Discussions
Feb 16, 2011 - Windshield Wipers only working at highest setting ... rear wiper worksjust fine, just the front wipers only work at highest setting. ... the wipers sometimes grinds out the gears thus only working at high sppeds. If it is the motor or Transmission for the wipers, can I fix this myself and how much would it cost me.

Common GM Wiper Problem - YouTube

? 3:23
https://www.youtube.com/watch?v=kc6e2Tmar68
Oct 25, 2010 - Uploaded by roadragecustoms
The windshield wipers only worked occasionally. ... My 1998 dodge ram wipers only work on high will this help me? thanks.... Express van. you have to take out the motor and the transmission from under the front of the van..

If your not familiar with automotive electronics an module control of components , I suggest you take it to the dealer . They have the tools to diagnose this type problem !
The Wiper/Washer System consists of the following components:
?€¢
Windshield wiper/washer switch

?€¢
Body control module (BCM)

?€¢
Wiper PCB relay

?€¢
Wiper high PCB relay

?€¢
Windshield wiper motor

?€¢
Windshield washer fluid pump

?€¢
Windshield washer fluid level switch

?€¢
WPR fuse 25 A

?€¢
WSW fuse 10 A

Low Speed Operation
When the wiper switch is in the low speed position, ground is applied through the switch internal resistor and the wiper switch low signal circuit to the body control module (BCM). In response to this signal, the BCM energizes the WIPER PCB relay by applying battery voltage through the wiper relay control circuit to the coil side of the relay. This allows battery positive voltage from the WPR fuse to flow through the switch input side of the WIPER PCB relay and out to the switch input side of the WIPER HIGH PCB relay. Since the wiper high relay is de-energized and its switch contacts are normally closed to the low speed control circuit of the windshield wiper motor, the motor will operate at low speed.
High Speed Operation When the wiper switch is in the high speed position, ground is applied through the windshield wiper switch high signal circuit to the body control module (BCM) indicating the wiper high speed request. In response to this signal, the BCM then energizes the wiper PCB relay, as stated above, and the wiper high PCB relay by applying ground through the control circuit to the coil side of the relay. With the wiper high relay energized and its switch contacts closed to the high speed control circuit of the wiper motor, the motor will operate at high speed.
Wiper motor high speed operation and the wiper high speed PCB relay can also be commanded ON/OFF by using a scan tool. Refer to Control Module References.
DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
You could Have a switch problem , BCM problem ,PCB relay problem , the pcb relays are non serviceable an the whole under hood fuse box would need to be replaced . Malfunctioning motor bad ground some where etc.....

what car, what year? gee? a suz, what?
it can only be 4 things. (all cars)
1: the wiper motor is bad. (it has contacts inside for timing.
2: the wiper shaft is stripped, nah you said both stalled.
3: the wiring is bad.
4: the combo switch for the above is bad.

DIY, with what , no tools? no meter.?
with no tools one can only GUESS,
roll dice, and replace a part.
after spending $500 on parts and the wires are good then what.
yes, buy a meter.

it could be a bad ground wire.

when you turn on most wipers, the combo switch sends
that signal( just 12v ) to the motor.
the motor is self booting, that is , it only needs the start up
and then it self provides its own power,
ive restored wiper motors, many.
then the motor runs until it his the dead spot in ITS, internal
sustain switch and the halts. if the combo switch is off.
but if the wiper fails to return, this is a bad wiper motor.
(overloaded by ice, sure)
the motor can fail 2 ways, but
id say the sustain switch is at EOL. end of life.

this is the most common design.
check your FSM for yours. the factor service manual.
or alldata dot com. sure.

Hi,
The 'stalk' that controls all these functions is faulty. Your truck SHOULD still be under warranty...Take it in.

GL,
Td

Sounds like the switch on the stalk is not working or if it goes through relays or other circuit that's the problem. You need an electrical schematic to properly troubleshoot.