How do you replace a downshift solenoid?
Part 1 of 3: Prepare to remove the downshift solenoid
- Materials Needed.
- Step 1: Disconnect the negative battery cable.
- Step 2: Raise and secure the vehicle.
- Step 3: Drain the transmission fluid.
- Step 4: Remove the transmission fluid pan.
- Step 1: Locate the downshift solenoid.
- Step 2: Disconnect wiring from solenoid.
Where can I get a transmission shift solenoid replaced?
Once it is determined that you have a failed transmission shift solenoid the only repair is to replace the faulty part. Replacing a transmission shift solenoid can be done by most any auto repair shop, automobile dealership service center or you can do-it-yourself “DIY”.
How to test shift solenoids on GM 4.3L?
In this article, I’ll show you how to test the transmission shift solenoids (specifically 1-2 solenoid and 2-3 solenoid) on your GM 4.3L, 5.0L, 5.7L pick up, van, SUV. You’ll be surprised just how easy it is to diagnose these shift solenoids when they have failed.
Can a faulty solenoid cause a transmission to stop?
A faulty shift solenoid can cause the transmission to downshift uncontrollably (in other words at random times) or not downshift at all, even when coming to a complete stop. Erratic Shifts: A defective shift solenoid can also cause the transmission to shift erratically.
How does TCM diagnose transmission shift solenoids?
The TCM activates them based upon inputs from both engine and transmission sensors. The diagnosis begins with a scanner and a DMM. A scanner identifies the faulty solenoid, or it’s a related circuit. If the scanner described a high power circuit code, check the solenoid’s ground side and follow the flow chart.
Once it is determined that you have a failed transmission shift solenoid the only repair is to replace the faulty part. Replacing a transmission shift solenoid can be done by most any auto repair shop, automobile dealership service center or you can do-it-yourself “DIY”.
In this article, I’ll show you how to test the transmission shift solenoids (specifically 1-2 solenoid and 2-3 solenoid) on your GM 4.3L, 5.0L, 5.7L pick up, van, SUV. You’ll be surprised just how easy it is to diagnose these shift solenoids when they have failed.
A faulty shift solenoid can cause the transmission to downshift uncontrollably (in other words at random times) or not downshift at all, even when coming to a complete stop. Erratic Shifts: A defective shift solenoid can also cause the transmission to shift erratically.
What are the diagnostic codes for Shift Solenoid?
The most common one is the check engine light will be on with one of the following diagnostic trouble codes: P0751 1-2 Shift Solenoid Valve Performance (Shift Solenoid A Performance) P0753 1-2 Shift Solenoid Valve Electrical (Shift Solenoid A Electrical) P0756 2-3 Shift Solenoid Valve Performance (Shift Solenoid B Performance)