2012 OPEL GT brake

1 2 4 D r iv in g an d o p e ra t io n
Hand brak e
Always apply ha nd brake firmly . O n s lopes ,
apply the hand brake as firmly as poss ible .
The m echanical hand b ra ke a ffe cts the
rea r wheel brakes. They a utomatica lly
enga ge w hen the lever is p ulled.
To release the hand brake, lift handle
s lig htly , pre ss rele as e button and lowe r
handle all the way down.
T o re du ce t h e o p e ra t in g f o r ces of t h e h a n d
brake , de pres s the foot brake at the sa me
time .Control i nd icator R f o r b r a k e s y st em
Illum inate s whe n the ignition is s witched on
if the hand brake is applied or if the brake/
clutch fluid le vel is too low.
Flas hes at s pee ds ove r 8 km/ h (5 m ph) if
ha nd brak e is applie d. Re le as e hand brake
b ef o r e c o nt i n u i ng j o ur n ey , t o a v o id
ov erheating and damag ing the brake
sy ste m. S ee also page 70 .
Brake and clutch fluid – s ee page 1 56 .
ABS u
T h e AB S ( A n ti-lo ck Brake Sys tem )
continuously monitors the brake system
a n d p r eve n ts t h e w h ee l s f r o m l o ck i ng ,
inde pende ntly of the typ e of road surface
and the tyre grip.
It s tarts to re gulate the braking pres sure as
soon a s a wheel shows a tendency to lock.
T h e veh i cl e r em a i ns s t ee r a bl e, eve n i n t h e
e vent of v ery he avy braking, for ins ta nce
on bends or when swerving to a void an
o bs t acl e. Ev en i n t h e c ase o f f u l l- o n
brak ing, the ABS mak es it poss ible to drive
round an obs tacle w ithout rele as ing the
brak es .
ABS control is mad e ap parent throug h a
puls e in the brake pe dal and the nois e of
the regulation process.
9 Warning
If the control indicator illuminates whe n
the hand brake is not ap plied: Stop.
Interrupt y our journey immediately.
C onsult a workshop.
9 Wa r nin g
For optimum braking, ke ep the brak e
peda l fully dep re s se d throughout the
braking proce ss , de s pite the fact that
the pe dal is pulsa ting. Do not reduce
the pre ssure on the peda l.
Do not le t this spe cial safety feature
tempt you into ta king risk s w he n driving.
Tra ffic safe ty can only b e ac hie ve d by
adopting a re spons ible d riv ing sty le .

12 5Dr i vi ng and o pe r ati on
Con t rol in dica tor u for ABS
Illuminates for a few seconds after the
ignition is switche d on. The s ys tem is ready
for operation when the control indica tor
goe s out.
If the control indicator doe s not g o out
after a fe w se conds, or if it illuminates while
driving, there is a fault in the ABS. The
brake system remains operational without
ABS regulation.Se lf-che ck
Each time the ignition is switc he d on and
the e ngine is starte d, afte r se tting off at a
speed of about 3 km /h (2 mph), the system
performs a s elf-check which may be
audible.
Fa u lt
You can continue driving, prov ided you
drive with care a nd antic ipation.
Have the cause of the fa ult re med ie d by a
workshop. The system’s integrated
se lf-d ia gnos tics allows fa ults to be quickly
re m e d i e d .
Wheels, tyres
S ee page 1 79 for s uitable tyre s and
re strictions.
F actory-fitted ty res are matched to the
chas sis and offer optimum driving comfort
and s afe ty .
C ha nging ty re/w heel t ype
Be fore changing to tyre s or whe els of a
differe nt size , s e ek a dvice as regards
te chnical poss ibilitie s . Se ek the as s istance
of a w ork shop.
If ty res of a differe nt size than those fitted
at the factory are used, the electronic
spee dome ter may req uire reprogramm ing
to ensure that the correct speed is
dis playe d.
9 Warning
If the re is a fault in ABS, the whe els may
be subje ct to loc king due to braking that
is heav ie r than norm al. This may cause
t h e ve h i cl e t o sw er ve . T h e a dva nt a g es of
A B S a r e n o l o n g er op er a t i o n a l .
9 Wa r nin g
Use of unsuitable tyres or wheels may
lead to accide nts and re nder the ve hicle
unroadworthy.

1 2 8 D r iv in g an d o p e ra t io n
The le gally permis sible minimum tre ad
de pth (1.6 m m) has bee n reache d whe n
the tre ad has worn down as far as one of
the w ear indicators (TWI
1)). A numbe r of
we ar indicators a re s pace d at e qual
intervals around the ty re within the tre ad.
Their pos ition is indicate d by markings on
the ty re side wall. Gene ral i nformati on
zThe danger of aq uap laning is gre ater if
the ty res are worn.
zTyres age, even if they a re used only very
little or not at all.
zNever fit used tyres the prev ious history
and use of w hich y ou do not know.
zSo as not to im pair brake cooling , use
only whe el trims app rov ed for us e on
your vehicle. Tyre d esigna tions
Me aning s:
e.g. 24 5/ 4 5 R 18 1 00 W
S pee d code lette rs:
1)TW I = Tread Wea r Indi c at or .
245=Tyre width in mm
45= Aspect ratio
(tyre height to ty re width) in %
R= Be lt type : Rad ial
18= Rim diame ter in inches
100= L oad inde x
e.g.: 100 corresponds to 800 kg
W=Speed code
QUp to 160 km/h (100 mph)
SUp to 180 km/h (112 mph)
TUp to 190 km/h (118 mph)
HUp to 210 km/h (130 mph)
VUp to 240 km/h (150 mph)
WUp to 270 km/h (168 mph)

134 Self-help, vehicle care
zDo not c onnec t leads to negative
te rminal of discharged battery!
zRoute the le ads so that the y ca nnot
catch on rotating p arts in the engine
com partment.
zStart the e ngine of the ve hicle p rov id ing
th e j u m p s t a r t .
zAfte r 5 minute s, sta rt the other e ngine .
Start attem pts should be made for no
longe r than 15 s econds at an interva l of
1 m i nu t e .
zAfte r the start, allow b oth engines to idle
for 3 minutes with the leads connected.
zIn ord er to av oid ex ces s voltage in the
el ec tr i ca l sy st e m , be f o r e r e m o vi n g a
le ad, switch on an e lectrical cons umer
(e .g. lamps , h ea te d re ar win do w) in th e
vehicle rece iving the jump start.
zReverse above sequence exactly when
re m o v i n g l e a d s .
Towing
Tow ing the vehicl e
Screw the front towing ey e (stowed in a
bag in the lugga ge compartme nt) fully into
the front towing point.
Attac h a tow rope 3 - or b etter still, a tow
ro d 3 - to the towing ey e, neve r to the
bumper or front suspension units.
Plac e the gear s hift le ve r in ne utra l. Switch
on the ignition to re lease the stee ring
colum n lock and to p ermit operation of the
brake lamps , horn and winds cree n wipers . Drive off slowly and avoid jerky
mov eme nts . Impe rm iss ible trac tiv e force s
could da mage the ve hicles .
To prevent the entry of exha ust gases from
the tow ing vehicle , switch on the air re -
circulation sy stem and close the windows.
S ee k the a ss istance of a works hop.
Towi ng serv ice
E ntrust your ve hicle only to the towing
service of your choice and obtain an
e stimate on towing costs be fore e mploying
any tow ing se rvice. In this way y ou avoid
unnecessary c osts and possible insurance
proble ms during claim proce ss ing.
9 Warning
Ne ve r lift the ve hicle using the towing
eye!
9 Wa r nin g
More brake pedal pressure is necessary
w h en b ra ki n g s i n ce t he br a ke s er vo un i t i s
operative only when the engine is
running.
Conside rably greate r ste ering force is
necessary since the power steering unit is
operative only when the engine is
running.

14 3Self-help, vehicle care
F u se s a n d t h e m o st i m po r t an t
circuits they protect
F use box in pa sse nge r compa rtme nt
The fuse b ox is located at the e nd of the
pas se nger’s foot well, be low the ins trument
pane l.
Pull floor carpe t from the top to access fuse
box cover.To ope n, pull cover from the left-hand s ide
to detach from V e lcro pads and re move
cover.
Do not store any objects behind the cover.
Spare fus e s, fus e extractor -
se e p ages 1 41 , 14 2 . S om e functions are protecte d by se ve ral
f u se s.
No. Circui t Rat ing
1
-
2
-
3
-
4
-
5
Amplifier 2 0 A
6
Instrument p anel cluster 10 A
7
Ign ition s witch ,
ele ctronic im mobilise r2 A
8
Brake lamp 10 A
9
Climate control,
ele ctronic im mobilise r10 A
10
-
11
Spare 2 0 A
12
Airb ags 1 0 A
13
Spare 1 0 A
14
Wi n d s c r ee n w i p e rs 1 0 A

14 9Self-help, vehicle care
Rear brake, tail, turn signal lamps
1 . Ope n lug gage compartme nt
2 . Remove 2 bolts holding the bulb
assem bly to the vehicle body.3. Pull bulb as se mbly away from ve hicle
body and de tach plug connector from
bulb assemb ly.
4. Rotate bulb soc ket a nti-clockwise and
rem ove from bulb asse mbly.
5. Re move bulb from bulb socke t and inse rt
new bulb, without touching the glass.
6. Re place bulb s oc ket in bulb ass em bly
and rotate bulb socket cloc kwise .
7. Re place bulb as se mbly into original
pos ition and repla ce 2 bolts to hold bulb
asse mbly to the v ehicle body.
8. C los e lug gage compartme nt.
R eversing lamp, fog tail lamp
1. Reach behind, up a nd under rea r
panelling and locate bulb s ocke t.
2. Rotate bulb socke t anti-clockwise and
remove from lam p as se mbly.
3 . Remov e bulb from bulb s ocket and ins ert
ne w bulb, without touching the g la ss.
4 . Install bulb s ocket by lining up the tabs in
the lamp as se mbly and rota te bulb
socke t clockwis e.

156 Self-help, vehicle care
Coola n t te mpe rat u re
During operation the system is pressurized.
T h e t em p er a t u r e m a y t h er e f or e r i s e t o o v er
100 °C.
Co n tro l in dicato rW illuminates in the
instrume nt panel whe n coolant
t em p er a t u r e i s t o o h i g h . C h eck co ol a nt
lev el im mediate ly:
zCoolant leve l low:
Top up coolant. Pay a tte ntion to the
instruc tions given under " Antifreeze and
corrosion protection" and "C oolant
level". H ave the cause of coolant loss
re me died by a workshop.
zCoolant level O K:
Have the caus e of incre ase d coolant
temperature remedied. Conta ct a
work shop.
Br ake and c lutch f lu id
Brake and clutch fluid le ve l
The fluid lev el in the containe r must be
neither higher than the MAX mark nor
low er than the MIN mark.Use of c ertain brake/clutch fluids can lead
to dam age or reduce d braking e ffect.
We therefore recommend that you use
only high pe rform anc e brak e/ clutch fluid
app rov ed.
W hen topping up, ens ure max imum
cle anline ss , as contamination of the b ra ke/
clutch fluid can lead to function problems
in the braking s ys te m.
After corre cting the brak e/clutch fluid lev el,
have the cause of brake/clutch fluid loss
re medie d by a works hop.
9 Warning
Brake /clutch fluid is poisonous and
corrosive . Do not allow it to c ontact e yes,
s kin, fabrics or painted surface s. Dire ct
contact ma y caus e injuries and da mage .

15 7Self-help, vehicle care
Brak e/clut ch fluid c ha nge
Brake /clutch fluid is hygroscopic, i.e . it
absorbs water. If the brak es be come hot,
s uc h as whe n driving on long downhill
stretches, va pour bubbles can occur in the
water, which can have an extrem ely
adv ers e e ffe ct on braking power
( dep en di n g o n t h e p ro p o r t i o n o f w a t e r) .
The fluid change intervals s pecifie d in the
chapter "Service, Maintenance" on
page 1 65 m us t there fore be obs erve d.
Power steering fluid
The power steering fluid does not require
any additional ma inte na nce than that
detaile d in the c hap te r "S ervice ,
Mainte nance" on page 16 5 .
If the fluid in the re s ervoir falls below the
HOT mark on the dipstick, consult a
work shop.
Windscreen wipers
C lear v is ion is es se ntial for safe driving.
Pe rform re gular check s on the windsc re en
wipe rs to ens ure they are ope rating
correc tly . W e recomme nd wipe r blade
re placem ent at le ast once a year.
If t h e w i n dsc re en i s di r t y, o p er a t e t h e
windscreen washer system b efore
s witching on the winds cree n wipers . This
will av oid wipe r blade wea r.
Do not switch on the windscree n wipers if
the wind scre en is ice d up, as this could
dam age the wipe r blade s or the wipe r
system.
If the wipers b ecome froze n on to the glass,
w e r e c om m e n d th a t th e y b e r e l e a s e d w i t h
t h e a i d o f O p el D e - i cer S p r a y.
S mearing wiper blades c an be cle ane d with
a soft cloth a nd Opel C leaning Solvent and
Antifreez e.
W iper blades whos e lips have be come
harde ne d, crack ed or covere d with s ilicone
mus t be replac ed. This may be nece ss ary
as a re sult of the e ffe cts of ic e, thawing s alt
or hea t, or the incorrect use of cleaning
age nts.
S witc h off the windsc re en w ip ers in
car washe s – s ee page s 15 , 1 6 1.
W indscre en w ip er care – se e p age 163.
9 Wa r ning
We r ec o m m en d t h a t y o u ha v e b r a k e/
clutch fluid change d by a works hop who
is familiar with the req uire ments of the
la w as rega rd s d ispos al of brake /clutch
fluid a nd can thus he lp to protect the
en vi r o n m en t a n d y o ur he a l t h .