Can a fuel pump still run with PassLock on?

Even if there is a problem with passlock, and since it disables injectors, I should still hear fuel pump prime when key is turned and should still have fuel pressure at fuel rail, correct? Yes, the fuel pump should still run even if there is a passlock issue.

What is the system fault code for PassLock security?

When the sensor defect starts, it usually presents itself as system fault code B2960. A red (or yellow) “security” warning light will stay illuminated and the engine will either a) never start or b) start for a moment and then shut down.

What to do if your car won’t start at PassLock?

A red (or yellow) “security” warning light will stay illuminated and the engine will either a) never start or b) start for a moment and then shut down. A temporary fix is to leave your key in the ignition, at the “auxiliary” position for about 10-15 minutes until the security light shuts off.

How does the GM PassLock system work on a car?

The GM Passlock System is a key-based, fuel shutdown, anti-theft system. The Passlock system requires that the key cylinder be mechanically turned using a key.

Why did General Motors start the PassLock system?

Aug 1st, 2005 The PassLock system was designed to prevent vehicle theft by disabling fuel to the engine if attempts are made to start the vehicle without the correct bitted key. PASSLock increased the level of security while retaining the ease of service and costs offered by standard ignition lock systems.

What should the fuel pump pressure be to start the engine?

The fuel pump produces much more than just 50 PSI of course but the bare minimum the engine needs to start is 50 PSI. Anything less and it will crank for ever before it starts or not start at all. So, the very first thing you need to do is to verify that the fuel pump is delivering at least 50 PSI of fuel pressure while the engine is cranking.

Why does my PassLock not work on my car?

The following information can help to determine the cause of the problem. The PASSLock system does not disable the starter; it only disables the fuel after the engine has started. If the vehicle will not crank, PASSLock cannot cause this condition. If the vehicle starts, but stalls quickly, this condition can possibly be related to PASSLock.

What should the fuel pressure be to start a Vortec engine?

The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start. The fuel pump produces much more than just 50 PSI of course but the bare minimum the engine needs to start is 50 PSI… so anything less and it will crank for ever before it starts or not start at all.

How does the PassLock work on a General Motors car?

Note: The theft deterrent function of the PASSLock System locks out the fuel injectors after the engine is started. However, before a tamper mode engages, the car may run for a few seconds. The engine will then stall. PASSLock was developed for the General Motors 10-cut lock mechanism.

Is the fuel pump suppose to get power with the ” on ” key?

I have a Haynes manual for my 90 TSi Awd that specifically states that the fuel pump should come on with the key in the “on” position, engine off, and that it will shut off after two seconds if no ignition signal is detected. Mine’s even done that once or twice, too. So yes, technically, it should, though it may not be doing so.

How does the PassLock shut off the fuel pump?

I have now learned that the PCM also shuts off the injectors as well as the fuel pump. This is done via the Fuel Enable circuit to the PCM. It can be duplicated with a 5v 50hz sine wave on Passlock systems which is probably all the newrockies device does.

How does the fuel pump work in a car?

The fuel pump is a device that moves fuel from your tank to the engine, supplying the fuel at a constant pressure to ensure that your engine runs smoothly.

Can a fuel pump still run with PassLock on?