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Chevrolet Colorado Headlight Bulbs Replacement Guide
How to change a burnt out low beam, high beam, front turn signal or side marker bulb in a 2015-2019 Colorado.

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2019 Colorado Headlight
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Low Beam Dust Cover
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Twist Counterclockwise
This automotive maintenance tutorial was specifically written to assist owners of the second generation (2015, 2016, 2017, 2018, 2019 and probably also the refreshed 2020 model year) GM Chevrolet Colorado truck in changing a burnt out low beam, high beam, front turn signal or side marker light bulb in the headlight housings.

Owners of other General Motors vehicles from Chevrolet, GMC, Cadillac, Buick and Holden such as the Trax, Equinox, Traverse, Blazer, Tahoe, Suburban, Sonic, Cruze, Trailblazer, Spark, Malibu, Impala, Volt, Bolt, Corvette, Camaro, Silverado, Express, Regal, LaCrosse, Cascada, Encore, Enclave, Envision, Canyon, Sierra, Terrain, Acadia, Yukon, XT4, XT5, XT6, Escalade, CT5, CTS, XTS, CT6, ATS, Astra and Commodore may also find these DIY instructions to be helpful.

The compatible replacement light bulb parts numbers are as follows: Low Beam # H11, High Beam # 9005, Front Turn Signal # 7444NA and Side Marker # 2825 (or W5W).

No tools are required to change any of the light bulbs in the driver side housing.

To access the light bulbs in the passenger side headlight housing, you'll need a flat head screwdriver and possibly also a pop rivet removal tool.

The first two steps are to open the hood and then move to the side of the truck with the burnt out bulb.

This guide will start with the driver side headlight housing. For the steps needed to remove the plastic cover in order to access the bulbs in the passenger side housing, skip down to near the bottom of the page.

The low beam light bulb is situated near the outer area of the housing.

Reach in behind the headlight housing and twist off the black plastic dust cap 1/4 turn in the counterclockwise direction.



 

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Dust Cap Removed
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Low Beam Bulb Exposed
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1/4 Turn Counterclockwise
Set the dust cover aside in a safe place.

Rotate the base of the old low beam bulb 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

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Old Light Bulb Removed
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Push In Release Tab
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Disconnect Power Plug
Push in the release tab on the black plastic electrical connector before pulling it straight off the old low beam bulb.

The OEM (original equipment manufacturer) light bulb was an Osram H11 12V 55W.

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Osram H11 Low Beam
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Empty Bulb Housing
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Install New Light Bulb
Try to avoid touching the glass part of the new halogen bulb with your fingers or anything greasy in the engine bay.

If you do get the new bulb dirty, wipe it clean with a paper towel and some rubbing alcohol.

Insert a new number H11 halogen low beam light bulb into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

If you would like to have brighter low beam lights, install some compatible replacement H11 LED bulbs.

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Push On Power Plug
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Top Inner - High Beam
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Remove Dust Cover
Push the electrical connector straight on to the base of the new low beam bulb.

You should hear or feel the power plug "click" securely into place.

Replace the dust cap by twisting it on 1/4 turn in the clockwise direction.

(If you need to change the front side marker light bulb, leave the dust cap off the back of the low beam housing for easier access.)

The high beam light bulb is situated near the top inner corner of the headlight housing.

Reach in behind the housing and twist off the round black plastic dust cap 1/4 turn in the counterclockwise direction.

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High Beam Dust Cover
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Base of Old High Beam
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Pry Back Retaining Clip
Set the dust cover aside in a safe place.

Gently pry back the two tabs on the retaining clip before pulling the electrical connector straight off the base of the old high beam light bulb.

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Power Plug Removed
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1/4 Turn Counterclockwise
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Old Light Bulb Removed
Rotate the base of the old high beam light bulb 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

The OEM high beam light bulb in this 2019 Colorado LT was a Sylvania 9005 12V 60W.

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Empty Bulb Housing
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Install New High Beam
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Push On Power Plug
Avoid touching the glass part of the new halogen light bulb with your fingers or anything greasy in the engine bay.

If you do get the new bulb dirty, wipe it clean with a paper towel and some rubbing alcohol.

Grease or oil on the new bulb can cause hot spots which may lead the bulb failing prematurely.

Install the new number 9005 high beam light bulb into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

If you would like to have brighter high beams that will also last a log longer before burning out, install some compatible replacement 9005 LED bulbs.

Push the power plug straight on to the base of the new high beam bulb until it clicks securely into place.

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Turn Signal Bulb Socket
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1/4 Turn Counterclockwise
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Pull Out Old Light Bulb
The front turn signal light bulb is located at the bottom inner corner of the headlight housing.

Rotate the grey and black plastic bulb socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

Gently pull the old light bulb straight out of the socket.

If you have trouble removing the old bulb due to rust or debris, try carefully wiggling it back and forth while pulling it straight out.

Avoid using excessive pressure on the old bulb to prevent from having it break and cut your fingers.



 

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Old Light Bulb Removed
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Push In New Light Bulb
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1/4 Turn Clockwise - Lock
Push a new amber colored number 7444NA light bulb straight into the socket.

If you would like to have brighter front turn signal lights, install some compatible replacement 744NA LED bulbs.

Re-insert the front turn signal bulb socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

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Side Marker - Outer Edge
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Long Black Plastic Tab
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1/4 Turn Counterclockwise
The front side marker light bulb is located at the outer corner of the headlight housing.

Reach in behind the housing past the low beam and towards the front quarter panel.

If you have trouble reaching the front side marker bulb socket, remove the round black plastic dust cap on the back of the low beam bulb housing.

Rotate the long black plastic tab on the end of the side marker bulb socket 1/4 turn in the counterclockwise direction before pulling it straight out of the housing.

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Bulb Socket Removed
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Replace Small Light Bulb
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1/4 Turn Clockwise - Lock
Pull the old light bulb straight out of the socket.

Push a new number 2825 miniature wedge base light bulb straight into the socket.

If you would like to have brighter side marker lights, install some compatible replacement 2825 LED bulbs.

Re-insert the side marker bulb socket into the housing and rotate it 1/4 turn in the clockwise direction to secure it into place.

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Line Up Dust Cover
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1/4 Turn Clockwise
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Dust Cap Replaced
If you removed the low beam dust cap, replace it by rotating it 1/4 turn in the clockwise direction.

To replace any of the bulbs in the passenger side headlight housing, follow the steps below.

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Passenger Side Headlight
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Pry Off Plastic Pop Rivet
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Coolant Hose Released
Move to the passenger side of the engine bay and locate the black rubber hose that connects the radiator to the coolant overflow reservoir bottle.

Use a pop rivet removal tool to pry off the fastener that secures the hose to the top of the engine bay.

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Pry Out Center of Fastener
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Pry Out Base of Fastener
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Plastic Fastener Removed
Then locate the fasteners on the black plastic cover on the back side of the passenger side headlight housing.

Use a flat head screwdriver to gently pry out the smaller round center of the fasteners to remove the locking pins.

Then pry out the base of the fastener.

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Remove Other Fasteners
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Fasteners Removed
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Pull Black Plastic Cover
Set the fasteners aside in a safe place.

Gently pull back the plastic trim cover to access the bulb sockets in the passenger side headlight housing.

Follow the previous steps to replace any of the bulbs.

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Replace Cover & Hose
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Test New Headlight Bulbs
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Test New High Beam
Push the plastic cover back into place and replace the fasteners.

Re-attach the pop rivet to secure the coolant hose back into place.

To test the new light bulbs, turn on the headlights, activate the hazard lights and flash the high beams.

Don't forget to write down the bulb change in your truck's service records.

Please check out all of my 2015-2019 GM Chevrolet Colorado DIY Repair & Maintenance Guides.
 

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