1988 PONTIAC FIERO Service Repair Manual

5H-16 DOORS. F STYLE
3; To install, reverse removal procedure. Tighten
nuts to 8
N-m (72 in-lb) torque.
Remote Mirror Face Replacement
CAUTION: To minimize the chance of
personal injury,
gloves and safety
glasses should be worn when
removing broken glass.
NOTICE: When breaking mirror, cover painted
surface of door to avoid damage.
1. To remove a scratched, broken, stained, etc.,
mirror face from the frame, tape, then break the
mirror glass and remove the broken glass and
fiber pad from the mirror frame.
2. Wipe inside of mirror frame clean.
3. To
install replacement mirror face, remove paper
backing from service mirror face and center
mirror in mirror frame. Press firmly to ensure
adhesion of the mirror face to the mirror frame.
POWER-OPERATED BIIXSIDE MIRRORS
Mirror Case and Motor Removal and Installation
Follow instructions which are included with new
service part. Use electrical tape to protect electrical
connections.
Mirror Housing Removal and Installation
1. From door trim panel side, remove remote
control mirror bezel, release and remove door
panel as described in Door Trim section and
disconnect wire harness connection from remote
mirror electrical switch.
2. Peel back water deflector enough to detach
harness from retaining tabs in door.
3. Remove mirror base-to-door stud nuts and lift
mirror housing and harness assembly from door.
4. To install, reverse removal procedure.
SPRING CLIPS
Spring clips are used to secure remote control
connecting rods and inside locking rods to door lock
levers and remote handles.
A slot in the clip provides
for disengagement of the clips, allowing easier
detachment of linkage.
Removal and lnstallation
To disengage a spring clip, use a screwdriver or
other suitable thin-bladed tool to slide clip out of
engagement as shown in Figure 34. To install, reverse
removal procedure.
CONNECTING RODS AND LOCKING RODS
Rods are used to connect the door lock actuating
levers with the inside and outside handles and the
inside lock knob. The rods are attached to the lock with
spring clips.
LOCK LEVER
( $&
DISENGAGE TANG / INSERT To
Fig. 34-Removing Spring Clip
Removal and Installation
1. Remove door trim panel and detach inner panel
water deflector enough to gain access to required
parts.
2. To remove any rod, disengage spring clip
retaining rod to lock lever, then disengage rod.
Spring clip removal is shown in Figure 34. To
remove inside remote handle connecting rod,
spring clip retaining rod to remote handle must
also be disengaged. To remove inside lock knob
to lock rod, first remove knob as described in trim
portion of this section.
3. To
reinstall rods, first reengage spring clips on
lock levers. Align rod in installed position and
engage rod in proper lock lever until held by
spring clip.
INSIDE REMOTE HANDLE
Removal and lnstallation
1. Remove door trim panel and detach inner panel
water deflector enough to gain access to remote
handle (Fig. 35).
2. Disengage connecting rod clip at remote handle
and disconnect rod.
3. Punch out center pin of attaching rivet (item
2,
Fig. 35); then drill out rivet using 4.8 mm (3/16")
drill bit.
4. Slide
remote handle forward to disengage front
retaining tab and remove.
5. To install, reverse removal procedure. Use steel
rivet, 3/16"
dia, x 5/16" length (USM Part No.
SD62BS or equivalent), to attach remote handle.
OUTSIDE HANDLE
Removal and lnstallation
1. Raise door window to full-up position. Remove
door trim panel and detach inner panel water
deflector enough to expose rear access hole.
2. Remove outside handle to lock rod by
disengaging clip on outside handle (Fig. 36).
3. Remove two attaching nuts on handle studs.
4. Rotate handle up to disengage from attaching
holes.
5. To install, reverse removal procedure.

DOORS - F STYLE 5W.17
1. INSIDE REMOTE HANDLE
2. ATTACHING RIVET
3. TRIM PANEL
Fig. 35 - Installing Inside Remote Handle
LOCK CYLINDER ASSEMBLY
Removal and Installation
1. Raise door window. Remove door trim panel and
detach inner panel water deflector enough to
expose access hole.
2. Disengage lock cylinder
to lock rod at cylinder
(Fig. 36).
CAUTION: If removing lock cylinder
retainer by hand, wear gloves to
prevent personal injury.
3. With a screwdriver or similar tool, slide lock
cylinder retainer forward until disengaged.
Retainer can also be removed by hand by
grasping anti-theft shield at top of retainer and
rotating until disengaged. Remove lock cylinder
from door.
4. To install, reverse removal procedure. Be sure
gasket is installed properly.
5. Black lock cylinders should be lubricated with a
light oil. All other lock cylinders should be
lubricated with a general purpose silicone
lubricant, part no. 1052277 or equivalent.
DOOR LOCK STRIKER
The door lock striker consists of a single metal
bolt and washer assembly that is threaded into a
tapped, floating cage plate located in the body lock
pillar. The door is secured in the closed position when
the door lock fork bolt snaps over and engages the
striker bolt. The striker has provisions for fore and aft
adjustment only.
1. ROD, OUTSIDE HANDLE TO LOCK
2. OUTSIDE DOOR HANDLE
3. LOCK CYLINDER
4. LOCK CYLINDER GASKET
5. LOCK CYLINDER RETAINER
6. DOOR LOCK ASSEMBLY
7. ROD, LOCK CYLINDER TO LOCK
G92412-5H.F
Fig. 36-Door Locking Mechanism
Adjust (Fig. 37)
To determine if striker fore or aft adjustment is
required, proceed as follows:
1. Make certain door is properly aligned.
2. Apply modeling clay or body caulking compound
to lock bolt opening.
3. Close
door only as far as necessary for striker bolt
to form an impression in clay or caulking
compound. Complete door closing will make clay
removal very difficult.
4. Striker impression should be centered fore and
aft. The minimum allowable measurement for
dimension
X is 2 mm (3/32"). The maximum
allowable measurement for dimension
X is 4 mm
(5/32").
A 2 mm (3/32") spacer, part no. 4469196 or
equivalent, can be used to achieve the desired
alignment.
5. If adjustment is necessary, insert tool
J23457,
BT7107 or equivalent into the star-shaped recess
in the head of the striker and loosen striker bolt.

5H-18 DOORS - F STYLE
REFER TO ADJUSTMENT INSTRUCTIONS FOR
1 1 MODELING CLAY
STRIKER
IMPRESSION LOCK
FORK
BOLT
Fig. 37-Lock-to-Striker Fore and Aft Adjustment
Shift striker as required, then tighten bolt to 46
to 60
N-m (34 to 46 ft-lb).
Additional striker adjustment, up or down and in
or out, can be provided by using the following
procedure (Fig. 38).
1. Remove striker
NOTICE: It is important that a flat end rotary file
be used so that the tapped cage plate is not
damaged. The striker bolt and tapped cage plate
are important attaching parts that could affect the
performance of vital components and systems.
2. Using a
3/8" rotary file with a flat end and an
electric drill motor, enlarge hole in the direction
required (Fig. 38).
3. Reinstall striker to correct position.
Tighten
Striker bolt 46 to 60 N-m (34 to 46 ft-lb).
Fig. 38 - Enlarging Striker Bolt Hole
Remove or Disconnect (Fig. 39)
NOTICE: The door lock striker is an important
attaching part in that it could affect the
performance of vital components and systems,
and/or could result in major repair expense. It
must be replaced with one of the same part number
or with an equivalent part if replacement becomes
necessary. Do not use a replacement part of lesser
quality or substitute design. Torque values must be
used as specified during reassembly to assure
proper retention of this part.
1. Using a pencil, mark position of striker on body
lock pillar.
2. Striker, using tool J-23457,
BT-7107 or
equivalent.
TAPPED CAGE
PLATE

Fig. 39-Installing Door Lock Striker
Install or Connect (Fig. 39)
1.
Striker to body using tool J23457, BT7107 or
equivalent.
Tighten
Striker bolt to 46 to 60 N-m (34 to 46 ft-lb).
2. Touch up any exposed unpainted surface on lock
pillar adjacent to striker assembly if striker is
outside of pencil marks.
DOOR WEDGE PLATE (STYLES WITH HATCH
ROOF)
To achieve friction fit between door and body side
wedge plates, spacers can be removed or added as
required to the door side wedge plate (Fig. 40). The
addition of spacers may require longer screws to retain
wedge plate to the door. The following spacers are
available through the service parts system.
e Item 1 spacer part number 20452860 (1 mm)
e Item 2 spacer part number 20452861 (2 mm)

DOORS - F STYLE 5H-99
1. SPACER
2. SPACER
3. WEDGE PLATE
4. SCREW (8HORT)
6. SCREW (LONG) G93893.5H-F
Fig. 40 - Door Wedge Plate
DOOR JAMB SWITCH
Door jamb switch assemblies consist of a plunger,
plunger collar, threaded retainer and terminals. They
are installed in the front and rear door hinge pillars.
When the door of the vehicle is closed, the plunger is
depressed which creates an open in the ground circuit.
When the door is opened, the plunger is released and
completes the circuit to ground (Fig. 41).
When a new jamb switch is installed and the door
is closed the first time, the plunger is forced into the
sleeve and automatically adjusts the jamb switch for
that particular door. If a jamb switch fails, it should not
be readjusted by hand. A new jamb switch should be
installed.
Remove or Disconnect
1. Jamb switch
2. Electrical connector
Install or Connect
1. Electrical connector
2. Jamb switch
DOUBLE TERMINAL
I SINGLE TERMINAL I
Fig. 4 1 - Door Jamb Switches
DOOR HARDWARE LUBRICATION
The mechanical components of the door
assembly are lubricated during assembly. If additional
lubrication is required, use the following lubricants.
Black lock cylinders should be lubricated with a light
oil. All other door lock cylinders should be lubricated
with a general purpose silicone lubricant, part no.
1052277 or equivalent. Door hinge pins and rollers
should be lubricated at normal service intervals with 30
weight engine oil. Do not lubricate hinge roller to
hold-open link contacting surfaces as this may prevent
the roller from rolling properly. The remainder of all
door hardware mechanisms except lock assemblies can
be lubricated with part no. 1052349, Lubriplate
Spray-Lube "A", part no. 1052196, Lubriplate
Auto-Lube "A" or equivalent.
HARDWARE ATTACHMENT THREAD LOCKING
All door hardware production attaching screws
contain an epoxy thread-locking compound to insure
that the minimum original torque setting will be
maintained.
Service attaching screws may not contain a
thread-locking compound. To prevent loosening of
service screws or to renew thread-locking
characteristics of production screws, the threads of the
fastener(s) can be treated with part no. 1052279,
Loctite 75 (or equivalent) which is a two-part material
applied to the hardware attachment as a liquid. Upon
installation and tightening, the adhesive cures to bond
the attachment and prevent loosening or back out. The
adhesive bond does not prevent future attachment
removal if required. Loctite 75 or equivalent can be
used on any threaded fastener.
DOOR LOCK SYSTEM
This portion of the manual contains the service
operations necessary to remove the door lock and lock
cylinder assemblies. Any work performed on lock
system hardware requires the removal of the door trim
panel and inner panel water deflector.
Service procedures for spring clips, connecting
rods, locking rods, inside handles, outside handles and
the door lock striker were described previously in this
section.
DOOR LOCK ASSEMBLIES
A fork bolt lock design is utilized which includes
a safety interlock feature. The door is secured in a
closed position when the door lock fork bolt snaps over
the striker bolt. Doors can be locked from the inside
by sliding the door inside locking knob. Both doors can
be locked from the outside by simply sliding the
interior door locking knob and closing the door or by
using the proper key.
Do not attempt repairs to correct lock
discrepancies. Make corrections through
replacement of lock assembly.

5H-20 DOORS - F STYLE
Removal and Installation
1.
Raise door window. Remove door trim panel and
inner panel water deflector.
2. Disengage the following rods at lock assembly
(Fig. 42)
a. Inside locking rod
b. Inside handle to lock rod
c. Lock cylinder to lock rod
3. Remove lock screws and lower lock to disengage
outside handle to lock rod. Remove lock from
door.
4. To install, first install spring clips to lock
assembly, then reverse removal procedure.
Tighten lock screws to 9 to
11 Nem (80 to 100
in-lb) torque.
1. ROD, INSIDE HANDLE TO LOCK
2. BELL CRANK (POWER LOCKS ONLY)
3. LOCK ASSEMBLY
4. POWER LOCK ACTUATOR
4. INSIDE LOCKING ROD
6. RIVET
7. INSIDE HANDLE
G92413-5H-F
Fig. 42-Door Locking System
POWER DOOR LOCK SYSTEM
The power door lock system has a motor actuator
in each door.
A rod connects the actuator to the bell
crank. A rod on the bell crank attaches to the lock
assembly. The system is actuated by a control switch
in each door trim panel. Both doors lock and unlock
at the same time from either control switch. Each lock
can also be operated manually by sliding the locking
knob in the desired direction. The locking knob shows
red when in the unlocked position. Each actuator has
an internal circuit breaker which may require one to
three minutes to reset.
DOOR POWER LOCK ACTUATOR
Removal
Remove door trim panel and inner panel water
deflector. Raise door window. Locate actuator
rivets on inner panel (item
4, Fig. 42).
Remove electrical connector.
Drive out rivet center pins.
Drill out rivets using 6.3 mm
(1/4") drill bit.
Remove actuator from rod (actuator to bell crank
rod, Fig. 42).
Disconnect electrical connector to actuator.
Remove actuator from door.
Installation
1. Install actuator to rod.
2. Connect electrical connector to actuator.
3. If hand rivet tool J-29022 or equivalent is
available, install actuator to inner panel using
1/4"x0.500" aluminum peel type rivets, part no.
9436175 or equivalent.
4. If hand rivet tool is not available, attach actuator
to inner panel using
M6.0~1~13 (1/4-20x1/2")
nuts and bolts. Tighten bolts 10 to 14 N-m (90
to 125 in-lb) torque.
5. Install water deflector and door trim panel.
DOOR BELL CRANK (POWER LOCKS ONLY)
Removal
1.
Raise glass to full-up position and remove door
trim panel and water deflector.
2. Punch out center pin of rivet retaining bell crank
to door inner panel (item 2, Fig. 42).
3. Using a
4.8 mm (3/16") drill bit, drill out rivet.
4. Disconnect the inside
lock knob to bell crank rod,
bell crank to actuator rod and the bell crank to
lock rod and remove bell crank.
Installation
1.
Install bell crank to actuator rod.
2. Install lock to bell crank rod.
3. Install inside lock knob to bell crank rod.
4. Locate tab on bell crank in slot in inner panel.
5. Using rivet tool J-29022, install 3/16" dia. x
5/16" length rivet (USM part no.
SD62BS or
equivalent), through hole in bell crank and inner
panel.
6. Replace all previously removed parts.
EXTERIOR MOLDINGS
The door body side moldings are attached with
adhesive tape. On certain styles, a door spoiler is
attached with studs and nuts while a body spoiler is
attached with screws and clips.
General Precautions
When removing or installing any door outside
molding, care should be exercised.
1. Adjacent finishes should be covered with
masking tape to prevent damage to finish.

DOORS - F STYLE 5H-21
2. Proper tools and care should be used to guard SPOILER ON BODY against molding damage.
The spoiler on the body is retained by clips and
3.
~oles in body ~anels for screws, bolts or clips that screws, The screws thread into a support which is would permit water entry into the body interior welded to the body, must be sealed with bodv caulking. com~ound or " presealed screws, nuts or clips. Removal and Installation (Fig. 44)
Molding Clip Replacement 1. Remove emblem at front of spoiler covering
hidden screws.
If a stud On an Outer pane' becomes 2. Remove screws along upper and lower edge of damaged or broken off, use the following procedure.
spoiler.
1 Drill a small in the pane' next to 3. Rotate spoiler out and up to release from clips on weld stud location.
quarter panel.
2. Insert a self-sealing screw through original clip 4, To install, reverse removal procedures,
and into outer panel or replace damaged weld
stud with
self-sealing, screw-type weld stud.
SPOlLER ON DOOR
Removal and Installation
1. Remove door trim panel and detach water
deflector.
2. Remove retaining nuts at both lower corners of
door and center of door (Section
A-A and View
B, Fig. 43).
3. Remove spoiler from door.
4. To install, reverse removal procedure.
VIEW B
1. SPOILER ON BOOR
2. RETAINER NUTS
SECTION B-B
1. SCREWS
2. SPOILER ON ROCKER
3. SUPPORT ON ROCKER
Fig. 44-Spoiler on Body Installation
Adhesive Body Side Molding
A complete procedure for attaching loose or
removed adhesive attached moldings can be found in
Section
1H.
Fig. 43-Installing Spoiler on Door

REAR QUARTERS - F STYLE 8H-1
SECTION 6H
REAR QUARTERS
NOTICE: The anti-theft label found on some major sheet metal, engines, and transmissions must be masked
prior to painting, rustproofing, undercoating, etc. The mask
must be removed following the above operations.
Failure to keep the label clean and readable may result in liability for violation of Federal Vehicle Theft Prevention
Standard, and subject the vehicle owner to possible suspicion that the part was stolen.
CONTENTS
Quarter Trim .................................................... 6H- 1
Lower Trim Finishing Panel ....................... 6H- 1
Body Lock Pillar Trim Finishing
Panel
., ....................................................... 6H- 1
Upper Trim Finishing Panel Insert ............. 6H- 1
....................................................... Speakers 6H- 1
Lift Window Upper Finishing
Molding
..................................................... 6H-2
....................... Upper Trim Finishing Panel 6H-2
QUARTER TRlM
QUARTER LOWER TRlM FINISHING PANEL
Removal and Installation (Fig. 1)
Remove body lock pillar finishing panel (Fig. 3).
Remove rear
seatback lock striker.
Remove retaining screw in rearward area of
quarter lower trim panel.
Remove rear screws from sill plate and carpet
retainer (Fig.
2).
Grasp quarter lower trim panel with hand; then
pull forward and down to disengage from
pinchweld flange at weatherstrip and quarter
upper trim finishing panel.
Remove seat belt through slot in trim panel.
Remove quarter lower trim finishing panel from
car by lifting up on rear portion of sill plate and
carpet retainer; then pull quarter trim rearward.
To install, place panel retaining slots under
quarter upper trim panel and apply upward
pressure to secure.
Position panel assembly to body. Thread lap and
shoulder belt through respective slots in panel.
Install attaching screws to secure panel to body.
Replace all previously removed components.
BODY LOCK PILLAR TRlM FINISHING PANEL
Removal and lnstallation (Fig. 3)
1. Remove trim panel attaching screws.
2. Using trim removing tool J-24595B, BT-7323A
or equivalent, carefully disengage nylon fasteners
that retain body lock pillar panel to quarter upper
trim finishing panel.
3. To install, reverse removal procedures. Spare
Tire Cover Trim Finishing
Panel
........................................................ 6H-3
Rear Stowage Compartment Box
Assembly
................................................... 6H-4
Luggage Shade Cover Assembly
................. 6H-4
Exterior Moldings
........................................... 6H-6
Fuel Tank Filler Door and Pocket
Assembly
....................................................... 6H-7
Spoiler Extension
............................ .. ........... 6H-7
QUARTER UPPER TRlM FINISHING PANEL
INSERT
Removal and Installation (Fig. 4)
1. Remove coat hook.
2. Grasp panel insert with hand and pull upward to
disengage retainers from cutout slots in quarter
upper trim finishing panel (Fig. 4).
3. To install, reverse removal procedures.
REAR QUARTER SPEAKERS
The rear quarter speakers are installed to a
speaker retainer. The retainer and speaker are then
attached to the quarter inner panel by screws.
Standard Speakers
Remove or Disconnect
1. Quarter upper trim finishing panel insert
2. Screws securing speaker retainer
3. Disconnect electrical
connector from speaker
4. Speaker
Install or Connect
1. Speaker to body
2. Electrical connector
3. Screws securing speaker to retainer
4. Quarter upper trim finishing panel insert
Subwoofer Speakers (2FS/FW/FX Styles)
Remove or Disconnect (Fig. 5)
1.
Quarter upper trim finishing panel insert (Fig. 4)
2. Body lock pillar trim finishing panel (Fig. 3)
3. Two rear screws from carpet retainer (Fig.
2)
4.
Quarter lower trim finishing panel