GMC 1982 Light Duty Truck Service Manual page 209

Fig. 2D-11 5-Adjusting Ventilator Tension
4. Remove ventilator assembly as previously outlined.
5. Raise window until regulator arms are level with access
hole in door.
6. Slide glass forward until front roller is in line with
notch in sash channel. Disengage roller from channel.
See figure 2 D -1 16.
7. Push window forward and tilt front portion of window
up until rear roller is disengaged.
8. Put window assembly in normal position (level) and
raise straight up and out.
9. Reverse above procedure for installation.
DOOR WINDOW ADJUSTMENT
To perform the adjustments listed, the door trim panels
must be removed.
Glass H e ig h t (Fig. 2 D -1 16)
Loosen the bolt and adjust the stop assembly located
above the regulator sprocket so that the glass height in the
lowered position is flush with the top of the sill, then tighten
stop assembly bolt.
R egulator Raising and Low ering Effort (Fig. 2 D -1 0 9 )
The lower bolt on the run channel assembly provides
fore and aft movement to ease regulator effort.
W INDOW REGULATOR - MANUAL
R eplacem ent
1. Wind window all the way up.
2. Remove inside door handles with Tool J-7797.
3. Remove door trim pad.
4. Remove screws securing regulator to inner panel.
5. Push regulator out of door opening while holding rear
of assembly, then slide assembly to the notches in the
carrier channel and out through the door access hole.
6. Install regulator in reverse order of removal, lubricate
regulator gears with lubriplate or equivalent.
WINDOW REGULATOR - POWER
In the case th a t window will not operate, check
electrical connections first. Figure 2D-118 illustrates
location of junctions, switch, relay and circuit breaker.
Replacem ent
C A U TIO N : Electrical connectors must be rem oved
from w in d o w lift motor before perform ing any
o p eratio n on th e re g u la to r, or personal injury
could occur.
1. Disconnect battery ground cable.
2. Remove door trim panel.
3. Disconnect harness from regulator.
4. Remove screws securing regulator to inner panel.
5. Push regulator out of door opening while holding rear
of assembly, then slide assembly to the notches in the
carrier channel and out through the door access hole.
C A U T IO N : Step 6 m ust be p erfo rm ed w h e n
regulator is rem oved from door. The reg ulator lift
arms are under tension from the counterbalance
spring an d can cause serious injury if the motor is
rem o ved w ith o u t locking th e sector g e a r in
position.
6. Drill a hole through the regulator sector gear and back
plate. DO N O T drill hole closer than 1/2" (12.7mm)
to edge of sector gear or back plate. Install a pan head
sheet metal tapping screw (No. 10 - 12 x 3/4) in drilled
hole to lock sector gear in position.
7. Remove motor to regulator attaching screws.
8. Remove motor from regulator.
9. Prior to installation, lubricate the motor drive gear and
regulator sector teeth.
The lubrication used must be cold weather approved to
a minimum of minus 20° fahrenheit (-29°C).
10. Install regulator motor to regulator. Make sure the
motor pinion gear teeth mesh properly with the sector
gear teeth before installing the three motor attaching
screws.
BODY 2D-47