Pontiac 2005 Grand Prix - Manual (Page 312)

Automatic Transaxle Fluid
When to Check and Change
A good time to check the automatic transaxle fluid level
is when the engine oil is changed.
Change both the fluid and filter every 50,000 miles
(83 000 km) if the vehicle is mainly driven under one or
more of these conditions:
• In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
• In hilly or mountainous terrain.
• When doing frequent trailer towing.
• Uses such as found in taxi, police or delivery
service.
If the vehicle is not used under any of these
conditions, change the fluid and filter at
100,000 miles (166 000 km).
See Scheduled Maintenance on page 6-4.
How to Check
Because this operation can be a little difficult, you may
choose to have this done at the dealership service
department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
Notice: Too much or too little fluid can damage the
transaxle. Too much can mean that some of the
fluid could come out and fall on hot engine or
exhaust system parts, starting a fire. Too little fluid
could cause the transaxle to overheat. Be sure
to get an accurate reading if you check the
transaxle fluid.
Wait at least 30 minutes before checking the transaxle
fluid level if you have been driving:
• When outside temperatures are above 90°F (32°C).
• At high speed for quite a while.
• In heavy traffic — especially in hot weather.
• While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is 180°F to 200°F
(82°C to 93°C).
Get the vehicle warmed up by driving about
15 miles (24 km) when outside temperatures are
above 50°F (10°C). If it is colder than 50°F (10°C),
you may have to drive longer.
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