1994 Pontiac: only work wiper motor I need a wiper pulse module

A 1994 Pontiac Transport has an issue where the front wipers only operate on the high setting. A suggestion has been made that a wiper motor replacement may be necessary, while another opinion indicates that the wiper pulse module might be the culprit. The wiper pulse module, also known as the control module, is integrated into the wiper motor assembly. It may be possible to obtain a replacement module separately, although it might not be more cost-effective than purchasing an entire wiper motor assembly. It is advisable to research available options and compare prices before making a decision.

In automotive windshield wiper systems, the wiper motor and pulse module play critical roles in the functionality of the wipers. The wiper motor is responsible for driving the wiper arms, while the pulse module controls the timing and speed of the wipers, allowing for various settings such as intermittent, low, and high speeds.

In the case of the 1994 Pontiac Transport, the malfunction where the wipers only operate on high could indicate a failure in the pulse module. The pulse module is typically mounted within the wiper motor assembly, which complicates the replacement process. If the pulse module is faulty, it may not provide the necessary signals to the motor to switch between different speed settings.

To diagnose the issue, one approach is to perform a visual inspection of the wiper motor and its connections. Checking for any loose or corroded wires can help determine if the problem is electrical rather than mechanical. If the connections are intact, testing the wiper motor directly can reveal whether it responds to different power inputs.

If the decision is made to replace the wiper motor assembly, it is recommended to source a compatible part either from a dealership or an aftermarket supplier. Comparing costs between a complete motor assembly and a separate pulse module is essential, as sometimes the price difference may not justify the effort of a partial replacement.

In summary, understanding the components involved in the wiper system and their functions is crucial for effective troubleshooting and repair. Proper assessment of the wiper motor and pulse module will lead to an informed decision regarding the necessary repairs for the 1994 Pontiac Transport's wiper system.A 1994 Pontiac Transport. the front wipers only work on high. Someone said I need a wiper motor and someone else says I need a wiper pulse module. Where is the wiper pulse module located the pulse module, or sometimes referred to as the control module, is the circuit board assembly that is mounted inside the wiper motor (see schematic below). You may or may not be able to get a replacement module as a separate unit, and a separate unit may not be any less expensive than the entire wiper motor assembly. I would do some checking around and see what is available and the price difference, before making a decision.

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