Transmission Fluid Check. Buick Roadmaster 1996

For 1990-2009 cars

#### 4L60-E Transmission Fluid Checking Procedure

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check the fluid color. Is the fluid color red? | -- | Go to Step 2 | Go to Step 11
2 | Check the fluid level. Refer to Transmission Fluid Check Is the fluid level satisfactory? | -- | Go to Step 20 | Go to Step 3
3 | Check the fluid. Is the fluid foamy? | -- | Go to Step 8 | Go to Step 4
4 | Check the fluid level. The proper fluid level should be in the middle of the X-hatch. Is the level high? | -- | Go to Step 9 | Go to Step 5
5 | Fluid will be low. Add fluid to the proper fluid level. Is the fluid level satisfactory? | -- | Go to Step 6 | --
6 | Check for external leaks. Refer to Fluid Leak Diagnosis and Repair Did you find any leaks? | -- | Go to Step 7 | Go to Step 20
7 | Correct the leak condition. Did you correct the leak condition? | -- | Go to Step 20 | --
8 | Is the fluid level too high? | -- | Go to Step 9 | Go to Step 10
9 | Remove excess fluid to the proper fluid level. Is the fluid level satisfactory? | -- | Go to Step 20 | --

10

1. Check for contaminants in the fluid.
2. Drain the fluid to determine the source of the contamination.

Did you drain the fluid?

--

Go to Step 15

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11 | Is the fluid color non-transparent pink? | -- | Go to Step 12 | Go to Step 13
12 | Replace the cooler. Is the replacement complete? | -- | Go to Step 15 | --
13 | The fluid color should be light brown. Notice: Transmission fluid may turn dark with normal use. This does not always indicate oxidation or contamination. Is the fluid color light brown? | -- | Go to Step 14 | --
14 | Drain the fluid to determine if the fluid is contaminated. Notice: A very small amount of material in the bottom pan is a normal condition, but large pieces of metal or other material in the bottom pan require a transmission overhaul. Was the fluid contaminated? | -- | Go to Step 15 | Go to Step 18
15 | Overhaul the transmission. Refer to the Unit Repair Section. Is the overhaul complete? | -- | Go to Step 16 | --
16 | Flush the cooler. Has the cooler been flushed? | -- | Go to Step 17 | --
17 | Add new fluid. Is the procedure complete? | -- | Go to Step 19 | --
18 | Change the fluid and the filter. Is this procedure complete? | -- | Go to Step 19 | --
19 | Is the fluid level satisfactory? Refer to Transmission Fluid Check If not, correct as necessary. | -- | Go to Step 20 | --
20 | Perform the Functional Test. Is the Functional Test completed? | -- | System OK | --