After installing one of these bulbs on the right rear assembly, I noticed the turn signal flashed much quicker. Is that normal?

This is caused by the led lamp voltage jump. Its a hyper flash. The only way to correct this is to install a resistor which you can find by googling hyper flash.

I have these bulbs in a 15 gmc sierra and get error code what needs to be done to fix this issue

These bulbs don’t draw much current and the computer thinks your light has burned out. They make special ballast resistors that you wire in parallel to the LED to increase the current draw. But that defeats the purpose of the LED on the first place: low current. Maybe GM has a better solution. I’d call them. I had the same issue on my motorcycle: plus a “fast flash” warning. I just learned to live with it

Will this work with my 2021 Chevrolet Tahoe premier? Without errors on the dashboard?

I can only tell you that I installed mine in a 2020 jeep gladiator without any fault errors. The made a drastic improvement over the stock bulb.

please mention how many is in this pack?

There are 2 bulbs in the pack. One for each side. Theses are great reverse lights.

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🚗 Light up your ride with brilliance and efficiency!

INSTANT ON ZERO DELAY - Smart IC driver ensures constant current with no warm-up time or radio interference—ready the moment you need it.
ENERGY SMART ULTRA BRIGHT - Consumes only 5.5W per bulb—quarter the energy of halogens but 4 times the brightness. Save power without sacrificing safety.
BRILLIANT 360 ILLUMINATION - 54 precision 4014-SMD LEDs deliver full 6000K Xenon white light for crystal-clear reverse visibility.
UNIVERSAL FIT EASY INSTALL - Non-polarity, plug-n-play design fits multiple US standard sockets (7440, 7443, 7441, 7444, and more) for hassle-free upgrades.
DURABLE ELECTROPLATED HOUSING - Advanced oxidation-resistant finish reduces heat and extends bulb lifespan, maintaining sleek aesthetics in your vehicle.

The AUXITO Upgraded 7440/7443 LED bulbs feature 54 high-efficiency 4014-SMD LEDs arranged for 360° illumination at a crisp 6000K Xenon white. These bulbs deliver 4x the brightness of traditional halogens while consuming just 5.5W, ensuring energy savings and enhanced safety. Equipped with a smart IC driver for instant-on performance and housed in a durable electroplated casing, they offer a plug-n-play, non-polarity fit compatible with a wide range of US standard sockets, making them an ideal upgrade for reverse, brake, tail, and parking lights.

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Manufacturer	AUXITO
Brand	AUXITO
Model	992, 7440, 7441, 7443, 7442, 7444, W21W, WY21W, 7440NA, 7440NAK, 7444NA,7444NAK, 7443LL.etc.
Product Dimensions	5.59 x 2.01 x 1.6 cm; 39.69 g
Item model number	7443-54H-DD-W2
Exterior	Electroplating process
Manufacturer Part Number	AUXITO-US54H7443W2-240111
OEM Part Number	992, 7440, 7441, 7443, 7442, 7444, W21W, WY21W, 7440NA, etc.
Position	Rear
Bulb Type	Halogen, LED, Xenon
Mirror Lighting Type	automotive-exterior-brake-light-bulbs, automotive-exterior-turn-signal-light-bulbs
Voltage	12 Volts (DC)
Wattage	5.5 watts
Item Weight	39.6 g

AUXITOUpgraded 7440 7443 LED Bulbs for Reverse Lights T20 7441 7444 LED Replacement Light Kit for Backup Tail Brake Signal Parking DRL Lights, 6000K Xenon White

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