Page 218 of 375

Downloaded from www.Manualslib.com manuals search engine 6. Remove any rust or dirt 
from  the  wheel  bolts, 
mounting  surfaces  and  spare  wheel. 
I 
A CAUTION: 
Rust  or  dirt  on  the  wheel, or on  the  parts  to 
which  it 
is fastened,  can  make  the  wheel nuts 
become  loose after 
a time.  The wheel  could  come 
off and  cause  an  accident. When you change a 
wheel,  remove  any  rust  or  dirt  from  the  places 
where  the  wheel attaches  to  the  vehicle. In  an 
emergency,  you can use 
a cloth  or a  paper  towel 
to  do  this;  but  be  sure  to 
use a  scraper  or  wire 
brush  later,  if  you need  to,  to get  all  the  rust  or 
dirt off. 
1 
Never  use  oil or grease  on studs or nuts. If you 
do,  the  nuts  might  come loose.  Your  wheel  could 
fall 
off, causing  a  serious  accident. 
7. Place the spare  on  the  wheel  mounting  surface. 
8. Put  the  nuts  on by 
hand.  Make  sure the 
cone-shaped  end is 
toward  the  wheel. 
Tighten  each  nut  by 
’ hand  until  the  wheel  is 
held  against  the  hub. 
If a nut  can’t  be turned 
by  hand,  use  the  wheel  wrench  and 
see your  dealer  as 
soon  as possible. 
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        Page 276 of 375

Downloaded from www.Manualslib.com manuals search engine Temperature - A, B, C 
The temperature  grades are A (the highest), B, and C, 
representing  the  tire’s  resistance to the  generation  of 
heat  and  its  ability 
to dissipate  heat  when  tested  under 
controlled  conditions on  a  specified  indoor  laboratory 
test  wheel.  Sustained  high temperature can  cause  the 
material 
of the  tire to degenerate and  reduce tire life,  and 
excessive  temperature  can lead 
to sudden  tire failure. 
The grade 
C corresponds  to a  level  of performance 
which  all passenger  car tires  must  meet  under  the 
Federal  Motor  Vehicle  Safety  Standard 
No. 109.  Grades 
B and A represent  higher levels  of  performance  on the 
laboratory  test  wheel  than  the  minimum  required  by  law. 
Warning:  The temperature  grade for this  tire 
is 
established  for a tire that is properly  inflated  and not 
overloaded.  Excessive  speed, underinflation,  or 
excessive loading, either  separately or in  combination, 
can  cause  heat  buildup  and possible  tire  failure. 
Wheel  Alignment  and  Tire  Balance 
The  wheels  on your  vehicle  were  aligned  and  balanced 
carefully  at the  factory  to give 
you the  longest  tire life 
and  best  overall  performance. 
In  most  cases,  you  will  not  need  to have  your  wheels 
aligned  again.  However,  if 
you notice  unusual  tire  wear 
or  your  vehicle  pulling  one  way  or the  other,  the 
alignment  may  need  to be  reset.  If 
you notice  your 
vehicle  vibrating  when  driving on  a  smooth  road,  your 
wheels  may  need 
to be  rebalanced. 
Wheel  Replacement 
Replace  any  wheel  that  is  bent,  cracked,  or badly  rusted 
or corroded.  If wheel  nuts  keep coming  loose,  the  wheel, 
wheel  bolts  and  wheel  nuts  should 
be replaced.  If the 
wheel  leaks  air,  replace  it  (except  some aluminum 
wheels,  which  can  sometimes  be repaired).  See your 
GM dealer  if any  of these conditions  exist. 
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        Page 277 of 375

Downloaded from www.Manualslib.com manuals search engine Your dealer  will  know  the  kind of wheel you need. 
Each  new  wheel  should have  the same  load carrying 
capacity,  diameter,  width,  offset  and  be  mounted  the  same  way as the  one  it replaces. 
If  you  need 
to replace any of your  wheels,  wheel  bolts 
or  wheel  nuts,  replace them only with  new 
GM original 
equipment  parts. This way,  you  will  be  sure 
to have the 
right  wheel,  wheel  bolts and wheel  nuts  for your model. 
Using  the  wrong  replacement  wheels, wheel bolts 
or  wheel  nuts on your  vehicle  can  be  dangerous. 
It  could  affect  the  braking  and  handling 
of your 
vehicle,  make  your  tires  lose air  and  make 
you  lose  control. 
You could  have  a  collision  in 
which  you  or  others  could  be  injured.  Always 
use  the  correct  wheel, wheel  bolts  and wheel 
nuts  for  replacement. 
NOTICE: 
The  wrong  wheel can also  cause  problems  with 
bearing  life, brake  cooling,  speedometer/odometer 
calibration,  headlamp  aim,  bumper  height,  vehicle 
ground  clearance  and  tire  or  tire  chain  clearance 
to  the  body and chassis, 
See  “Changing a  Flat  Tire”  in  the  Index  for more 
information. 
sed  Replacement 
7 keels 
Putting 
a used  wheel  on  your  vehicle is 
dangerous.  You can’t  know  how  it’s been  used  or 
how  many  miles it’s been  driven,  It  could  fail 
suddenly  and  cause  an  accident. 
If you  have  to 
replace  a  wheel, use 
a new GM original 
equipment  wheel. 
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