Standard Ignition AX155 Ambient Air Temperature Sensor

Ambient Air Temperature Sensor for OE-Style Replacement

Standard Ignition AX155 is a direct-fit ambient air temperature sensor built for straightforward replacement on a wide range of GM vehicles. It uses a push-on attachment, a black oval plug-in connector, and OE-style terminal layout for a clean, factory-style connection.

Designed for Chevrolet Silverado, GMC Sierra, Cadillac Escalade, and related applications, this ambient air temperature sensor is built with high-quality materials and tested for dependable operation in demanding conditions. The AX155 helps restore accurate outside temperature input to the vehicle’s HVAC and display systems.

Key Features

• Direct-fit ambient air temperature sensor for OE replacement
• Push-on attachment method for factory-style mounting
• Black housing with oval female connector
• Plug-in connector design with 2 male blade terminals
• High-quality materials for use in extreme conditions
• Extensively tested for reliability and consistent performance
• Compatible with applications that use a mounting clip and no bracket

Detailed Product Overview

The Standard Ignition AX155 ambient air temperature sensor is engineered to replace the original sensor on vehicles that rely on accurate outside air temperature readings for HVAC operation and driver information displays. It is a practical choice for Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac CTS, Cadillac Escalade, Chevrolet Equinox, and GMC Terrain applications listed in the fitment data. This part number, AX155, is also cross-referenced to Dorman - HELP 76012 for the same application.

Standard Ignition manufactures this sensor with complete quality control throughout the production process, helping ensure consistent fit and function. The compact black sensor body, female connector, and blade terminals are configured for OE-style installation where the original mounting clip is retained.

Common Problems This Sensor Can Help Resolve

• Inaccurate outside temperature readings on the dash or climate display
• HVAC system behavior affected by a failed ambient temperature input
• Intermittent temperature readings caused by connector or sensor wear
• Replacement needs after impact, corrosion, or exposure to harsh weather
• Restoration of factory-style temperature sensing on GM trucks and SUVs

Installation Notes and Tips

Install the AX155 in the original sensor location using the vehicle’s mounting clip where specified. This part does not include a mounting bracket or wiring harness, so reuse the existing vehicle hardware and connector interface as applicable. Verify connector shape, terminal style, and fitment notes before installation, especially on Chevrolet Silverado, GMC Sierra, and Cadillac models with clip-mounted sensors.

For best results, confirm the vehicle year, make, and model against the fitment list before ordering. The AX155 is listed for multiple GM platforms, including Chevrolet Malibu, Pontiac Torrent, Saturn Sky, and several Silverado and Sierra configurations.

Quality Assurance

Standard Ignition states that this sensor undergoes extensive testing and is produced under complete manufacturing quality control. That process supports consistent performance and OE-style fitment across the listed applications.