Page 224 of 338

Engine Accessory Belt 
A 
C 
The 3800  (L36)  engine  uses  an  engine  accessory  belt. 
This  diagram  shows the  features  connected  by the  belt 
routing.  See “Maintenance  Schedule”  in the  Index  for 
when  to check  the belt. 
A.  Power  Steering 
B . Alternator 
C. Air Conditioning 
D. Crank 
E. Coolant Pump 
E Tensioner 
3800 Supercharged (L67) Engine 
(Option) 
Your  Bonneville  may  have a 3800 Supercharged  engine. 
The  Supercharger  is 
a device  which is designed  to  pump 
more  air  into  the  engine than it would  normally 
use. 
This  air  mixed  with  fuel, creates increased  engine 
power.  Since the Supercharger  is a pump  and  is driven 
from  an engine  accessory  drive belt,  increased  pressure 
is  available  at  all driving  conditions. 
The  powertrain  control  module 
(PCM), works  with a 
vacuum  control to regulate  the  increased  pressure 
required  during  specific  driving conditions.  When  this 
increased  pressure  or boost is  not  desired,  such  as during 
idling 
and light  throttle  cruising, the excess air that the 
Supercharger is pumping  is  routed  through  a bypass. 
All 
of these  controls,  working  together provide  high 
performance  character 
and fuel efficiency in the 
3800 V6 Supercharged  engine. 
The  power  steering  pump uses a remote  reservoir 
mounted  on the throttle  and cruise control cable  bracket. 
See  “Maintenance  Schedule” 
in the  Index  for  when  you 
should  check  the fluid. 
6-11 
ProCarManuals.com 
     
        
        Page 225 of 338
Engine  Accessory Belt coolant pump and air conditioning compressor. Each 
belt has  its own tensioner and idler  pulley. 
1. Front Belt C. Crank 
2. Back Belt D. Supercharger 
A.  Alternator 
E. Coolant Pump 
B. Power Steering E Air  Conditioning 
The Supercharged 
38800 engine  uses two accessory drive 
belts.  One  belt drives  the generator and the power 
steering  pump. The second belt drives the supercharger,  See 
“Maintenance Schedule”  in 
the Index for when to 
check the accessory  drive belts and  Supercharger  oil 
level. Have  your dealer check the  oil  level in the 
Supercharger. 
Engine Oil 
CHECK OIL 
LEVEL 
If the CHECK QIL LEVEL light  on  the  instrument 
panel comes 
on, it means  you need  to check  your engine 
oil level 
right away.  for more information,  see “Check 
Oil Level Light”  in 
the Index. You should check your 
engine 
oil level regularly; this  is an  added  reminder. 
6-12 
ProCarManuals.com 
     
        
        Page 238 of 338

Power  Steering  Fluid 
How To Check Power Steering Fluid 
When the engine  compartment is cool, unscrew the  cap 
and  wipe  the dipstick  with a clean rag. Replace the  cap 
and  completely  tighten it. Then remove the  cap again 
and  look 
at the  fluid level on the dipstick. 
The level should  be at the  FULL 
COLD mark.  Add 
enough fluid to bring the  level up to the mark. 
A fluid loss in this  system could indicate a problem. 
Have  the system  inspected  and repaired.  The 
power  steering fluid reservoir on  the 
L67 engine is 
to  the right 
of the  supercharger and in front  of the 
transaxle dipstick. 
The  power steering fluid reservoir on  the 
L36 engine is 
located  below the alternator and behind the  accessory 
drive belt. 
What  to Add 
Refer to the Maintenance Schedule  to determine what 
kind 
of fluid to use.  See “Recommended Fluids  and 
Lubricants”  in the Index. 
I 
NOTICE: 
When  adding  power  steering  fluid  or  making a 
complete  fluid  change,  always  use  the  proper 
fluid.  Failure 
to use  the  proper  fluid  can  cause 
leaks  and  damage  hoses  and  seals. 
ProCarManuals.com