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Standard Ignition ALS3660 ABS Wheel Speed Sensor - Rear Left
| Brand | Standard Ignition ALS3660 |
|---|---|
| Position | Rear Left |
| Mounting Hardware Included | No |
| Terminal Quantity | 2 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Connector Quantity | 1 |
| Connector Shape | Octagon |
| Dust Shield Included | No |
| Harness Length - inches | 46.5" |
| Mounting Location | Spindle |
| Mounting Type | Bolt mount |
| Number of Bolt Holes | 2 |
| Terminal Type | Mini-blade |
| Wiring Harness Included | Yes |
| Fits | Chevrolet and GMC · 10 vehicles |
Bolt-mount design. Installs securely with a two-hole mounting pattern.
Wiring harness included. Comes ready with a 46.5-inch harness for easier routing.
Mini-blade terminals. Uses a female connector with an octagon shape.
Cross-references 534048, 84609176 and ABS3660 for the same application. See all 4.
ABS Wheel Speed Sensor for Rear Left Applications
Standard Ignition ALS3660 is an ABS wheel speed sensor for rear left service on select heavy-duty Chevrolet and GMC trucks. It is built with a 46.5-inch wiring harness, a 1-connector design, and a bolt-mount spindle installation layout for direct replacement service.
Key Features
- ABS wheel speed sensor for rear left position
- 46.5-inch wiring harness included
- 1 female connector with octagon shape
- 2 male mini-blade terminals
- Bolt-mount design with 2 bolt holes
- Mounts at the spindle location
- Standard Ignition ALS3660 replacement part
Detailed Description
Standard Ignition ALS3660 is an ABS wheel speed sensor engineered for rear left fitment on 2020-2024 Chevrolet Silverado 3500 HD and 2020-2024 GMC Sierra 3500 HD models. This sensor uses a female connector, male mini-blade terminals, and a bolt-mount spindle configuration to match the original service layout on the vehicle. The included wiring harness provides the needed lead length for routing at the rear axle area, while the octagon connector shape supports a secure electrical connection. This part cross-references Monroe Shocks & Struts (e.g., 534048, 84609176) for the same application.
What This Part Helps Address
- ABS warning light related to rear wheel speed signal loss
- Erratic or missing wheel speed sensor readings
- Traction control or stability system faults tied to the rear left sensor
- Brake system diagnostic trouble codes involving the rear axle sensor circuit
- Intermittent connection issues at the spindle-mounted sensor location
Installation Notes and Tips
Fits 2020-2024 Chevrolet Silverado 3500 HD, rear left. Fits 2020-2024 GMC Sierra 3500 HD, rear left. Confirm connector style, harness routing, and spindle mounting points before installation. Inspect the sensor mounting surface and wiring path for corrosion, damage, or debris that could affect signal quality. Verify the ABS system codes after installation and clear any stored faults as needed. Standard Ignition ALS3660 is a direct-fit replacement for vehicles listed in the fitment data.
Quality Assurance
Standard Ignition is a recognized aftermarket source for electrical and sensor components, and this ABS wheel speed sensor is built to match the specified connector, terminal, harness, and mounting configuration for the listed applications.
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2024 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2024 | GMC | Sierra 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2023 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2023 | GMC | Sierra 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2022 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2022 | GMC | Sierra 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2021 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2021 | GMC | Sierra 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2020 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | Rear Left | — |
| 2020 | GMC | Sierra 3500 HD | Crew Cab Pickup | Rear Left | — |
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