How to change headlight pitch on my 98? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-22-2004, 11:28 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Oct 2002
Location: Genoa, Illinois
Posts: 4,013
Thanks: 0
Thanked 0 Times in 0 Posts
Allmachtige is on a distinguished road
Default How to change headlight pitch on my 98?

I need to lower the vertical beam of my driver side headlight just a tad because I noticed its a little farther down the road at night and brighter/upward in the trunks of cars in front of me. Which hex screw do I turn to adjust the height?

Allmachtige is offline   Reply With Quote
Old 06-22-2004, 11:45 PM   #2
Senior Member
True Car Nut
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Thanks: 0
Thanked 0 Times in 0 Posts
PontiacDad is on a distinguished road
Default

Its the adjuster on the left for vertical and the one on the right for horizontal.

according to gm with your car 25 feet from a wall they should be 5 inches lower than the distance from the plastic dot on your head light to the ground.
ie if the aiming dot on the head light is 25" to the gound then at 25 feet the light should be at 20".....hope that makes sense?
PontiacDad is offline   Reply With Quote
Old 06-22-2004, 11:47 PM   #3
Senior Member
True Car Nut
Thread Starter
 
Join Date: Oct 2002
Location: Genoa, Illinois
Posts: 4,013
Thanks: 0
Thanked 0 Times in 0 Posts
Allmachtige is on a distinguished road
Default

You sure? Because the one on the left looks like it connects right to the inner portion of the headlight and it seems that if that was adjusted that it would push or pull the corner of the light...in other words, affect the horizantal beam.

But if your sure your sure. You sure?
Allmachtige is offline   Reply With Quote
Old 06-23-2004, 12:42 AM   #4
Senior Member
True Car Nut
 
Join Date: Jun 2003
Location: Purgatory
Posts: 6,313
Thanks: 0
Thanked 0 Times in 0 Posts
PontiacDad is on a distinguished road
Default

This is for a 1998 Pontiac Bonneville

Place the vehicle on a level pad or surface.
Close the doors.
Ensure that the fuel level is at a 1/2 tank or less.
Ensure that the tires are inflated to the proper pressure.
Complete the following steps and refer to the accompanying illustrations in order to adjust the headlamp aim:

1) Ensure that the headlamps are a distance of 7.6 m (25 ft) away from the wall.

2) Mark a vertical line on the wall. Align the vertical line with the center line of the vehicle.
3) Mark a horizontal line on the wall. Ensure that the distance (3) of the line to the floor is equal to the distance from the center of the headlamp aim dot (2) to the floor.
4) Using the headlamp aim adjusters (1), ensure that the following specifications match the specifications in the illustrations.
PontiacDad is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
high pitch whine nate_boothman 2000-2005 21 02-24-2007 05:50 PM
HIgh Pitch Squeal. Is this normal? BrightonBonneGXP Bonneville GXP/ Northstar Powered Cars 11 08-23-2006 10:46 PM
High pitch sounds from subs... driverjohn2005 Audio (and aftermarket electronics) 7 02-21-2005 08:16 PM
High pitch squeal while driving... Hans 1992-1999 8 02-17-2005 04:18 AM
CAN YOU LEGALLY TINT CAR WINDOWS PITCH BLACK TORQUE General GM Chat 42 01-01-2005 06:43 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:59 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.