55494551 Genuine GM NOx Sensor Upper For Colorado Canyon 2.8L Diesel

Name: 55494551 Genuine GM NOx Sensor Upper For Colorado Canyon 2.8L Diesel
Brand: GM
SKU: 55494551
Price: 314.00 USD
Availability: InStock

P/N: 55494551 Manufactured by: GM

$314.00 - $314.00

$314.00

$314.00 - $314.00

$314.00

3 in Stock

Condition: New

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Description

The 55494551 is a genuine GM upper nitrogen oxides (NOx) sensor developed for select 2016–2019 Chevrolet Colorado and GMC Canyon trucks powered by the 2.8L Duramax diesel engine. It continuously measures exhaust NOx concentration and delivers real-time information to the engine control module, helping the SCR system maintain proper emissions operation.

Vehicle Compatibility

Year	Vehicle	Engine	Trims
2019	Chevrolet Colorado	2.8L L4 Diesel	LT, WT, Z71, ZR2
2019	GMC Canyon	2.8L L4 Diesel	All Terrain, Denali, SLE, SLT
2018	Chevrolet Colorado	2.8L L4 Diesel	LT, WT, Z71, ZR2
2018	GMC Canyon	2.8L L4 Diesel	All Terrain, Denali, SLE, SLT
2017	Chevrolet Colorado	2.8L L4 Diesel	LT, WT, Z71, ZR2
2017	GMC Canyon	2.8L L4 Diesel	Denali, SLE, SLT
2016	Chevrolet Colorado	2.8L L4 Diesel	LT, WT, Z71
2016	GMC Canyon	2.8L L4 Diesel	SLE, SLT

General Specifications

Condition	New
Part Number	55494551
Brand	GM
Part Type	Nitrogen Oxides Sensor (NOx Sensor)
Years	2016–2019
Vehicle	Chevrolet Colorado, GMC Canyon
Position	Upper
Engine Compatibility	2.8L L4 Diesel
Weight	1.33 lbs
Fitment Type	Direct Replacement

Product Features

The 55494551 upper nitrogen oxides (NOx) sensor is built to match factory performance and installation requirements:

Calibrated to monitor nitrogen oxide concentration in the exhaust stream during engine operation
Designed for the original upper sensor mounting location used on compatible 2.8L Duramax diesel engines
Connects with the factory electrical harness for proper communication with the engine control module
Supplies accurate exhaust gas readings required for SCR system management
Manufactured to GM specifications for dependable performance in diesel emissions systems

Application Notes

The 55494551 is designed for vehicles equipped with the factory upper NOx sensor location used on the applications listed above. Check the wiring connector, exhaust bung, and mounting threads before installing the sensor to ensure a proper fit.

Confirm the part number, VIN, engine configuration, and sensor location before installation.