Buy GMC Jimmy Windshield Wiper Motors

The wiper motor is the little electric power unit that makes your front windshield blades sweep back and forth. It sits on the left side of the firewall and turns rotary motion from its gear set into the back‑and‑forth action you see on the glass.  (Portal Diagnostov)

Inside the housing is a 12‑volt DC motor, a worm‑gear reduction set, and a pulse‑board (control module). When you flip the stalk, power flows through Fuse #17 in the dash block, then through the pulse board, and finally to the motor windings.  (Fuse Box)
The pulse board lets you choose low, high, or several "delay" settings by quickly turning the motor on and off. Moisture protection around this card is critical, because cracked solder joints on early boards were a well‑known failure point.  (NHTSA, Cardone)

• Full‑size Jimmy (1983‑1991) - shared the setup with the Chevy K5 platform.
• Compact Jimmy (1995‑2001 U.S.; 2002‑2005 Canada) - shares its wiper drive with the S‑10/Blazer/Sonoma family. Watch a step‑by‑step video for the 1994‑2004 S‑10 chassis 

Because the compact and pickup lines are siblings, many motors marked with part numbers 12365319 or 40‑1030 will interchange across those years. Always match the three‑bolt pattern and electrical connector before you buy.  (eBay)

• Intermittent wiping or full stoppage - usually the pulse board's cracked solder pads.  (NHTSA, NHTSA)
• Won't park in the down position - worn internal cam.  (JustAnswer)
• Clicks but no movement - stripped plastic gears or seized linkage.  (Grassroots Motorsports)
• Blows fuse or stalls in heavy snow - over‑current trips the circuit breaker built into the motor as the owner's manual notes.  (Dezo's Manuals)

1. Check Fuse #17 "WIPER" in the instrument‑panel box (1995‑2001 models). See the diagram 
2. Wiggle the harness plug at the motor; if wipers jump, you've got a loose ground.  (Facebook)
3. Jump 12 V straight to the motor pins. If it spins, the issue is upstream; if silent, replace the unit.  (JustAnswer)

Replacing the wiper drive is a driveway job that takes about 45-60 minutes:

1. Unbolt the wiper arms and lift cowl trim.
2. Remove three T‑30 screws holding the motor.
3. Unclip the linkage ball socket with a flat screwdriver.
4. Swap in the new motor, greasing the pivot.
5. Re‑index the linkage so blades park low, then tighten the nut to factory spec (about 18 lb‑ft).

See the full walk‑through on YouTube: Chevy/GMC S‑series motor swap 

• Spray dielectric grease on the connector yearly to seal out water.  (Cardone)
• Keep the cowl drains clear so the motor never sits in pooled rain.  (JustAnswer)
• Run the blades on HIGH for a minute after snow clearing to dry the mechanism.  (Dezo's Manuals)

General Motors issued recall #03V159000 / GM 03023 covering 1994‑1998 Jimmy, Blazer, and related trucks. The fix was a free pulse‑board and cover replacement to stop sudden wiper loss. Details are in the NHTSA bulletin PDF  and a news write‑up from Autoweek . If your VIN shows an open recall, contact a GM dealer to schedule the repair.  (CarComplaints.com)

• Motor price: roughly US $60-$120 depending on brand and features (with or without pulse board).  (eBay)
• Labor: 0.6-1.0 hr at local shop rates. DIYers need only basic hand tools.  (YouTube)

Q: What are the first signs my wiper motor is dying?
A: Blades pause mid‑stroke, work only on high speed, or stop in random spots-classic symptoms of a failing pulse board.  (Grassroots Motorsports)

Q: Which fuse feeds the Jimmy's wiper engine?
A: Fuse slot 17 (15 A mini‑blade) in the dash‑side box for 1995‑2001 trucks.  (Fuse Box)

Q: Can I just fix the pulse board instead of changing the whole motor?
A: Yes. Solder the cracked joints or install an updated pulse‑board module; many enthusiasts show this repair in DIY videos.  (YouTube, YouTube)

Q: Are S‑10 and Blazer motors the same?
A: On most 1995‑2004 S‑series trucks and SUVs, the three‑bolt motor with the oval plug is identical, so interchange works fine.  (YouTube, eBay)

Q: Why did my wipers quit during heavy snow?
A: The internal circuit breaker opened to protect the motor from overload. Once the motor cools (or snow is cleared), it resets.  (Dezo's Manuals, Fuse Box)

Q: What's the torque spec for the wiper‑arm nut?
A: GM lists about 18 lb‑ft (24 N·m) for S‑series Jimmys.  (Portal Diagnostov)

Q: Do I need to re‑calibrate anything after installation?
A: Just park the blades in the low position before tightening the nut so the sweep pattern stays correct.  (YouTube)

Q: How long should a new wiper drive last?
A: With clean linkage and good seals, 8-12 years is typical. Pulse boards built after the recall rarely crack again.  (Cardone)

Q: Where can I find a wiring diagram?
A: The Automotive Electricians Portal hosts free Jimmy diagrams. View the 1995 schematic 

Q: My wipers only work on high-bad switch or motor?
A: Test the stalk switch first, but 9 times out of 10 the issue is the pulse board inside the motor assembly. 

Q: Is there an outstanding safety recall on my VIN?
A: Enter your 17‑digit VIN at the official NHTSA lookup site to be sure.  (NHTSA)

Q: Can water hurt the motor?
A: Yes-keeping the cowl drains clear prevents water pooling that can corrode motor bearings.  (Facebook)

Q: Are upgraded motors available?
A: Several aftermarket brands now reinforce the circuit board and add better seals to outlast the factory design.  (Cardone)

With these details, visitors will understand what the GMC Jimmy wiper motor does, why it fails, how to fix it, and where to learn more.