Test Description
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 5: This step tests for line pressure.
DTC P0701
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Automatic Transmission Controls Schematics | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
IMPORTANT:
Before clearing the DTC, use the scan tool in order to record the Freeze Frame and Failure Records for reference. The Clear Info function will erase the data.
|
Go to Step 3 | Go to Step 4 |
| 3 | DTC P0701 can set after performing fluid service and filter change, after replacement of the pressure switch manifold (PSM), or after a long period of storage. Have any of these conditions occurred? |
Go to Step 7 | Go to Step 5 |
| 4 | Add fluid to the proper level. Is the fluid at the appropriate level? |
Go to Step 5 | - |
| 5 | Measure line pressure. Refer to Line Pressure Check
. Is the pressure within the specified value? |
Go to Step 7 | Go to Step 6 |
| 6 | No main pressure at idle may be an indication of the following conditions:
Did you find the reason for a no line pressure condition and was it repaired? |
Go to Step 7 | Go to Symptoms - Automatic Transmission |
| 7 | Perform the following procedure in order to verify the repair:
Has the test run and passed? |
Go to Step 8 | Go to Step 2 |
| 8 | With the scan tool, observe the stored information, capture info, and DTC Info. Does the scan tool display any DTCs that you have not diagnosed? |
Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK |