P1632 GMC Code - Theft Deterrent Start Disable Signal Received
Quick Answer
The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and the Body Control Module (BCM) are an integral part of the vehicle theft deterrent system. Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty ignition switch. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1632 GMC indicates Theft Deterrent Start Disable Signal Received.
- Common causes
- Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty ignition switch.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1632 GMC Description
1.When the ignition is turned ON or the door is unlocked by remote key the BCM and the key exchange security data to verify the correct key is used.
2.Once the correct key has been confirmed and the ignition is turned ON, the PIM and BCM exchange data to confirm the correct BCM and PIM are being used.
3.Once the correct key, BCM, and PIM are confirmed, the PIM and ECM exchange data to allow the vehicle to start.
4.The data exchange processes conducted use various encrypted data exchanges between each of the devices.
What are the Possible Causes of the DTC P1632 GMC?
- Deterrent key not programmed to vehicle
- Faulty Deterrent key
- Faulty ignition switch
- Poor electrical connection for Deterrent circuit components
How to Fix the DTC P1632 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1632 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1632 GMC Code
What does the OBD-II code P1632 mean for a GMC vehicle?
P1632 indicates the Theft Deterrent Start Disable Signal has been received, meaning the vehicle's security system has prevented the engine from starting.
What are the common symptoms of the P1632 code?
Symptoms include the engine not starting, security warning light activation, and possible intermittent starting issues.
What causes the P1632 code to appear on a GMC vehicle?
Common causes include a malfunctioning Passlock system, faulty ignition switch, wiring issues, or problems with the Body Control Module (BCM).
Can I drive my GMC vehicle with the P1632 code active?
No, this code typically prevents the engine from starting, so the vehicle cannot be driven until the issue is resolved.
How can I fix the P1632 code on a GMC vehicle?
Repair options include inspecting the Passlock system, checking for damaged wiring, testing the ignition switch, and diagnosing the BCM for faults.
Does the P1632 code mean my GMC vehicle has been tampered with?
Not necessarily. While tampering could trigger the code, it is more commonly caused by component failures or wiring problems within the security system.
How do I reset the P1632 code on my GMC vehicle?
The code can be cleared using an OBD-II scanner after the underlying issue is resolved, but it may reappear if the problem persists.
Is the P1632 code specific to GMC vehicles?
While it is common in GMC vehicles, similar theft deterrent codes can appear in other GM-brand vehicles equipped with Passlock systems.
What tools are needed to diagnose the P1632 code?
You will need an OBD-II scanner, a multimeter for checking electrical connections, and potentially a wiring diagram for the vehicle's security system.
Can a faulty key cause the P1632 code to trigger?
Yes, if the key is damaged or the transponder signal is not recognized by the Passlock system, it could trigger the P1632 code.
Discuss the causes and fixes for P1632 GMC OBDII Code
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What model and year is your vehicle? What other symptoms do you have? is just the code?
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