6-Pin 12162210 Waterproof Accelerator Pedal Position Sensor (APPS) Connector – GM 1.5mm

Direct-fit replacement for GM OEM part number 12162210, the 6-pin waterproof 1.5mm connector used for the Accelerator Pedal Position Sensor (APPS) on Buick, Chevrolet, GMC, and Cadillac vehicles with drive-by-wire (electronic throttle control) systems. A failed APPS connector is a frequently overlooked cause of throttle-related fault codes and limp-home mode activation.

Key Specifications

• OEM Part Number: 12162210
• Pin Count: 6
• Terminal Pitch: 1.5mm (Micro-Pack 100 series)
• Wire Gauge: 18 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)
• Waterproof Rating: IP68
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, tin-plated
• Current Rating: Up to 7.5A per pin

Compatible Vehicles

• Chevrolet: Silverado, Tahoe, Suburban, Equinox, Malibu, Impala – drive-by-wire platforms
• GMC: Sierra, Yukon, Envoy, Canyon
• Buick: LaCrosse, Enclave, Regal
• Cadillac: Escalade, CTS, SRX
• Cross-reference: Verify OEM part number 12162210 before ordering

APPS Pin Assignment (6-Pin 12162210)

Fault Codes Caused by Failed APPS Connector

• P0120 / P0220 – Throttle/Pedal Position Sensor A/B Circuit
• P0121 / P0221 – APPS Range/Performance
• P0122 / P0222 – APPS Circuit Low Input (open circuit)
• P0123 / P0223 – APPS Circuit High Input
• P2135 – Throttle/Pedal Position Sensor A/B Voltage Correlation – most commonly caused by a corroded 12162210 connector causing the two sensor signals to diverge

Frequently Asked Questions

Q: What causes P2135 on GM vehicles?
A: P2135 (Throttle/Pedal Position Sensor Voltage Correlation) is triggered when the ECM detects that the two APPS signals (Sensor 1 and Sensor 2) do not correlate within expected parameters. The most common cause is a corroded or loose 12162210 connector causing one signal to drop out. Inspect and clean the connector before replacing the accelerator pedal assembly – the pedal assembly costs significantly more than the connector.

Q: Will a bad APPS connector cause limp-home mode?
A: Yes. When the ECM detects an APPS fault (P0120–P0123 or P2135), it activates reduced power mode (limp-home), limiting engine output to approximately 20–30% of normal. The vehicle will accelerate very slowly and the “Reduced Engine Power” warning will illuminate.

Q: What crimping tool is needed?
A: Use the Kent-Moore J-38125-8 or Delphi 12085271 ratchet crimper for 1.5mm Micro-Pack 100 terminals.

Package Contents

1 × 6-Pin Female Connector (12162210) with 18 AWG wire and terminal inserts
1 × 6-Pin Male Connector (12162210) with 18 AWG wire and terminal inserts