Will this work on a 2015 and 2017 gmc sierra?

yes,it works on my 2016 chevy express and my 2010 savana

Do you have to keep button pressed til horn beeps or do you press and release then wit?

Press and hold button until horn beeps. Read the instructions you should have received when purchasing it... CBN......

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JDIAG EL-50448 TPMS Relearn Tool for GM Auto Tire Pressure Monitor System Sensor Activation TPMS Reset Tool OEC-T5 for GM/Buick/Chevy/Cadillac Series Vehicles 2022 Edition

JDIAG EL-50448 TPMS Relearn Tool for GM Auto Tire Pressure Monitor System Sensor Activation TPMS Reset Tool OEC-T5 for GM/Buick/Chevy/Cadillac Series Vehicles 2022 Edition

Product ID: 62577398

⚡Faster sensor activation

🔋Energy-saving 9V battery powered

🚗Wide GM vehicle compatibility (2006-2026)

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80.46 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Reset your ride’s pressure sensors faster than ever—because waiting is so last decade!

COMPACT PORTABLE - Handheld, lightweight tool fits in your glovebox for on-the-go convenience
DIY TIRE SENSOR MASTERY - No dealer visits needed—reset your TPMS sensors effortlessly at home
ENERGY EFFICIENT DESIGN - Upgraded, power-saving tech extends battery life for longer use 🔋
BROAD GM CHEVY COVERAGE - Seamlessly works on Chevy, Buick, Cadillac & more from 2006 to 2026 🚗
LIGHTNING FAST TPMS RESET - Activate tire sensors in just 1-2 minutes with a single button press ⚡

The JDIAG EL-50448 TPMS Relearn Tool is a compact, energy-efficient device designed for GM series vehicles (Chevy, Buick, Cadillac, Opel) from 2006 to 2026. It enables quick, DIY activation and resetting of tire pressure monitoring sensors within 1-2 minutes, saving time and costly dealer visits. Featuring upgraded sensitivity and broad vehicle compatibility, this tool is essential for tire rotations, sensor replacements, and TPMS light resets.

Specifications

ASIN	B07C6B5K41
Batteries	1 9V batteries required.
Best Sellers Rank	#24,362 in Automotive ( See Top 100 in Automotive ) #24 in Tire Pressure Monitoring System Tools
Brand	JDIAG
Customer Reviews	4.2 4.2 out of 5 stars (6,617)
Date First Available	April 13, 2018
Is Discontinued By Manufacturer	No
Item Weight	5.6 ounces
Item model number	EL50448
Manufacturer	JDiag
Manufacturer Part Number	50448
Model	EL50448
Product Dimensions	2.64 x 1.65 x 6.3 inches
Special Features	CE and FCC Approval, Works with Cars and Trucks, for GM Series Chevy / Buick / GMC / Opel etc

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TrustScore 4.5 | 7,300+ reviews

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