The APDTY 756606 wiring harness pigtail connector is a flat 6-pin oval weatherpack connector designed to repair damaged or corroded electrical connections on numerous General Motors vehicles. This direct-replacement connector eliminates the need to replace entire wiring harnesses when connector terminals are damaged, melted, or corroded, restoring proper electrical continuity to sensors, actuators, and other components across GM's Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, and Saturn product lines. It replaces GM part numbers 13584094, PT1558, PT-2712, PT2712, and 88988944.
Key Takeaways
- Direct replacement for GM OE part numbers 13584094, 88988944, PT1558, and PT2712
- Flat 6-pin oval weatherpack design for multiple electrical component applications
- Compatible with numerous GM vehicles: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, and Saturn
- Repairs damaged connectors without replacing entire wiring harnesses
- Brand new OE-quality pigtail connector with weather-resistant design
Buy APDTY 756606 directly from APDTY
What Is the APDTY 756606 Connector and What Does It Do?
The APDTY 756606 is a 6-wire weatherpack pigtail connector used throughout General Motors vehicle electrical systems. This flat, oval-shaped connector provides the electrical interface between the vehicle's main wiring harness and various sensors, actuators, motors, and control modules.
Weatherpack connectors are designed with sealed terminals and housings to protect electrical connections from moisture, dirt, road salt, and temperature extremes. The 6-pin configuration means this connector handles six separate circuits simultaneously, making it suitable for components that require multiple signal, ground, and power connections.
This connector type appears in multiple GM vehicle systems, including but not limited to transmission control modules, sensor clusters, fuel system components, HVAC controls, and body control modules. Rather than replacing an entire expensive wiring harness when the connector fails, technicians can splice in this pigtail to restore proper electrical function.
What Are the Symptoms of a Failed or Damaged Connector?
Electrical connector failures typically manifest as intermittent or complete loss of function in the affected component. Common symptoms include:
- Intermittent operation: Component works sporadically, especially when hitting bumps or in certain weather conditions
- Complete component failure: Sensor, motor, or module stops working entirely
- Check engine light or warning messages: ECM detects open circuits, short circuits, or implausible signal readings
- Corrosion visible on terminals: Green, white, or brown deposits on pins indicate moisture intrusion
- Melted or burned connector housing: Evidence of overheating from high resistance connections
- Broken or bent pins: Physical damage from improper removal or installation
- Hard or brittle plastic housing: UV and heat exposure causes connector bodies to crack
Because this connector is used across multiple systems, diagnostic trouble codes will vary depending on which component circuit is affected. Technicians should visually inspect connectors whenever electrical faults are present, as connector issues are among the most common causes of electrical problems in vehicles.
Which GM Vehicles Use This Connector?
The APDTY 756606 connector is compatible with numerous General Motors vehicles across multiple brands and model years. According to the manufacturer specifications, this connector fits vehicles from the following GM divisions:
- Buick
- Cadillac
- Chevrolet
- GMC
- Hummer
- Isuzu (GM-era models)
- Oldsmobile
- Pontiac
- Saab (GM-era models)
- Saturn
Important: This is a universal-application connector used across many GM models and systems. Because it connects to numerous different electrical components in various locations, specific vehicle fitment depends on which component you are repairing. Always verify the connector shape, pin count, and terminal type match your vehicle's original connector before ordering. Check the live compatibility chart on the APDTY product page or consult your vehicle's service manual to confirm this connector matches your specific application.
APDTY 756606 Specifications and OE Cross-Reference
| Specification | Details |
|---|---|
| APDTY Part Number | 756606 |
| Connector Type | Weatherpack Pigtail |
| Pin Configuration | 6-Wire (6-Pin) |
| Connector Shape | Flat Oval |
| Application | Multiple Electrical Components |
| GM OE Part Numbers | 13584094, 88988944, PT1558, PT-2712, PT2712 |
| Compatible Brands | Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn |
| Condition | Brand New |
This connector is designed to OE specifications and replaces the original GM connectors exactly. The weatherpack design ensures reliable performance in harsh automotive environments where exposure to moisture, vibration, and temperature cycling can degrade electrical connections over time.
How to Install a Pigtail Connector Repair
Installing a pigtail connector requires basic soldering or crimp-splice techniques and attention to proper wire preparation. Always disconnect the vehicle battery before beginning any electrical repair work.
General installation steps:
- Disconnect the battery: Remove the negative battery cable and wait at least 15 minutes before beginning work
- Cut away the damaged connector: Leave 4-6 inches of wire beyond the damage if possible
- Strip wire insulation: Remove approximately 1/4 inch of insulation from each wire, being careful not to nick the copper strands
- Match wire colors: Identify corresponding wires between the pigtail and vehicle harness using a wiring diagram
- Join wires: Use heat-shrink solder sleeves or weatherproof butt connectors; twist-and-tape connections are not acceptable for automotive use
- Apply heat shrink: Cover each connection with adhesive-lined heat shrink tubing to seal against moisture
- Secure the harness: Use zip ties or OE-style clips to prevent stress on spliced connections
- Test functionality: Reconnect the battery and verify the component operates correctly; clear any diagnostic codes
Important safety notes: Never splice wires in airbag or SRS circuits unless you are a qualified technician with proper training. Some circuits carry high voltage (hybrid systems) or are critical safety systems that require special handling. When in doubt, consult a professional technician or the vehicle service manual for proper repair procedures specific to your application.
Frequently asked questions
Can I use this connector on non-GM vehicles?
This connector is specifically designed for General Motors applications with the corresponding 6-pin flat oval configuration. While the physical connector might fit other manufacturers' components, pin assignments and terminal types may differ. Always verify compatibility with your specific vehicle and component.
Does this pigtail connector come with terminals and pins?
The APDTY 756606 is a complete pigtail connector with pre-installed terminals. You will need to splice the wires from this pigtail to your vehicle's existing harness wires using appropriate crimps, solder sleeves, or other approved automotive wiring methods.
What is the wire gauge for this connector?
The product specifications provided do not list specific wire gauge. The pigtail is designed to match OE specifications for the circuits it serves. For applications requiring specific wire gauge information, consult your vehicle service manual or measure the existing harness wires.
Can this connector be used to repair a transmission harness?
This connector style is used in various GM electrical systems, including some transmission control applications. Verify that the connector shape, pin count, and terminal type match your transmission component before ordering. The GM part numbers (13584094, 88988944, PT1558, PT2712) can help confirm correct application through dealership parts lookup.
The APDTY 756606 weatherpack connector provides a cost-effective solution for repairing damaged electrical connections throughout GM's vehicle lineup. Rather than replacing entire wiring harnesses—often a labor-intensive and expensive proposition—this OE-replacement pigtail restores proper electrical function by replacing only the failed connector. Whether you're addressing corrosion damage, melted terminals, or physical connector breakage, this 6-wire weatherpack connector delivers the weatherproof, vibration-resistant connection quality required for reliable automotive electrical performance. Always verify fitment for your specific component application and follow proper wiring repair procedures to ensure a lasting, safe repair.