Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1996SAVANA SPECIAL 6.5 YREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 65 (WIPER SYSTEM AND WASHER SYSTEM - P SERIES VANS)TESTINGWIPERS DO NOT OPERATE IN LO OR MIST
1996 GMC Savana Special 6.5 Y
Wipers Do Not Operate In Lo Or Mist
1996 GMC Savana Special 6.5 YSECTION Wipers Do Not Operate In Lo Or Mist
WARNING: This page is about a different car, the 1996 GMC Vandura, 1996 GMC Forward Control, 1996 Chevrolet Forward Control, and 1996 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to RUN position. Turn wiper switch to LO position. Using a DVOM, backprobe from Gray wire terminal of wiper switch connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace wiper switch.
- Turn wiper switch to MIST position and hold. If voltage is less than 10 volts, replace wiper switch. If voltage is more than 10 volts, turn wiper switch to LO position. Backprobe from Light Blue/Black wire terminal of wiper switch connector to battery voltage. See Figure . If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace wiper switch.
- Turn wiper switch to MIST position and hold. If voltage is less than 10 volts, replace wiper switch. If voltage is more than 10 volts, turn wiper switch to LO position. Backprobe from Gray wire terminal of pulse wiper control module connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace pulse wiper control module.
- Backprobe from Light Blue wire terminal of pulse wiper control module connector to battery voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace pulse wiper control module.
- Backprobe from Gray wire terminal of wiper motor connector to battery voltage. If voltage is more than 10 volts, repair open Light Blue wire between control module connector and wiper motor connector. If voltage is less than 10 volts, repair open Gray wire between control module connector and wiper motor connector.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.