GM Service Manual Online
For 1990-2009 cars only

Object Number: 829650  Size: A2

If you have an automatic transmission and this gage, it is located above the switchbank in the center of the instrument panel.

When your ignition is on, the gage shows the temperature of the transmission oil. A reading in the warning zone, the red area beginning at 300°F (150°C), means you must stop driving and check into the cause. One possible cause is a low oil level in the transmission.

Notice: If you drive your vehicle with the transmission temperature gage above normal operating range, you can damage the transmission. This could lead to costly repairs that would not be covered by your warranty. Do not drive your vehicle while the transmission temperature gage reading is above normal. See your dealer for service.