Test Description
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis 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 | Value | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Automatic Transmission Controls Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Automatic Transmission? | - | Go to Step 2 | Go to Diagnostic System Check - Automatic Transmission |
| 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 | This DTC can be 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 Procedure
. 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? |
- | System OK | Go to Step 1 |