How to Troubleshoot Starting and Shifting Issues in a 2007 Chevy Impala?
Asked Dec 22, 20160 views3 answers
I have a 2007 Chevy Impala. I fixed the wires behind the shifter solenoid located between the seats and replaced the shifter with a newer model that has a wiring harness behind it. After repairing the wires, my car won't start, and I can't get it out of park. Additionally, the key can only be removed after I manually release the shifter. The car was drivable until I reached the point where I couldn't remove the key. I've searched online for solutions but haven't found anything that works. I need help diagnosing and fixing this issue.
Understanding Your 2007 Chevy Impala Starting and Shifting Issues
It sounds like you've encountered a common issue that can arise after wiring repairs and component replacements in your 2007 Chevy Impala. Below, we’ll explore the potential causes of your problem, provide step-by-step troubleshooting tips, and suggest best practices to help you resolve your difficulties in starting the vehicle and shifting out of park.
Common Causes of Starting and Shifting Issues
- Wiring Issues: Since you mentioned fixing wires behind the shifter solenoid, it’s possible that there are still faults in the wiring connections or that the wiring was not done correctly.
- Shift Lock Mechanism: The shift lock mechanism prevents the shifter from moving out of park unless the brake pedal is pressed. Issues here can prevent shifting.
- Electronic Control Module (ECM) or Body Control Module (BCM): If these modules are not receiving the correct signals, they may not allow the vehicle to start or shift out of park.
- Faulty Shifter Assembly: If the newer shifter model has compatibility issues or has a defect, it may cause the symptoms you're experiencing.
Step-by-Step Troubleshooting
Step 1: Inspect the Wiring
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Visual Inspection:
Expert Answers
GE
Gary Evans
Answered Dec 22, 2016
To troubleshoot the issue with your 2007 Chevy Impala, start by looking up the GM document ID 1760981 for the wiring diagrams. This will give you a clear view of how the circuit is set up. The circuit runs from the park/neutral switch at the transmission to the Engine Control Module (ECM). From there, data is communicated to the Body Control Module (BCM).
The BCM is responsible for providing voltage through circuit 1135 to the shift lock control solenoid, which then connects to circuit 750 and grounds out. When the solenoid is energized, it should allow you to shift gears properly.
If you're still having issues after checking these connections, make sure to verify that all the power is reaching the necessary components. This will help you pinpoint where the problem might be occurring. If you have difficulty accessing the diagrams or need further assistance, feel free to reach out for help.
CH
Carl Hawkins
Answered Dec 22, 2016
There's a GM Technical Service Bulletin that addresses the issue you're experiencing with your 2007 Chevy Impala. The bulletin number is `08-07-30-007B:EI08045`. If you do a quick Google search for that bulletin, you should be able to find detailed information that will guide you toward a solution for your problem.
These bulletins often include specific fixes, wiring diagrams, and troubleshooting steps that can help you resolve issues related to the shifter solenoid and the wiring behind it. It's a great resource to tap into, as it’s designed to assist with common problems that many owners face. Following the guidance in the bulletin should lead you in the right direction for fixing your vehicle.
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