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How do you Change, Replace, or Install 1999-2005 Pontiac Montana Headlight Assembly Replacement

Tools required:
  • Pliers

Step 1: Open the vehicle's hood and remove the 3 wing-nuts holding the headlight assembly in place.

IF the wing-nuts are tightened more than "hand tight", use the pliers to get enough leverage to loosen them.

Step 2: The headlight assembly will now pull straight out from the vehicle frame.

Step 3: Disconnect the electrical plug to completely remove the existing headlight assembly.

Step 4: Connect the electrical plug to the new headlight assembly.

Step 5: Align the pegs on the headlight assembly with the corresponding openings beneath the assembly position, and put the new assembly in place.

Step 6: Re-align the blinker and wing-nut pegs to ensure proper placement.

Step 7: Tighten all of the wing-nuts to ensure that the lighting assembly is not "loose" in any way.

Finger-tight is perfectly acceptable for the wing-nut tightness.

Please Note

While we are more than happy to create these installation guides for your benefit, we cannot maintain any liability regarding the part, or the driving experience, once the part has been replaced/installed. We always guarantee the quality of the parts we provide, but the installation liability rests solely on the installer.

And, though we are always here to answer your questions, please note that our technicians created these guides for your convenience, and cannot provide assistance beyond this guide.

If you're looking for a good deal on the parts mentioned in this instructional guide, be sure to check these out:

Years 05-05, OEM #:10368389 - Partslink # GM2502175
Except SV6
Years 05-05, OEM #:10368388 - Partslink # GM2503175
Except SV6
Years 99-05, OEM #:10368389 - Partslink # GM2502175

Years 99-05, OEM #:10368388 - Partslink # GM2503175


These Part Change / Installation Instructions Apply to
05 2005, 04 2004, 03 2003, 02 2002, 01 2001, 00 2000, 99 1999 Pontiac Montana Headlight Assembly Replacement Instructions

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