No Spark?

If you jump the power terminals at the relay does the pump run?

This guide should help:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please run down this guide and report back.

Hi,

If you have power at the relay, by jumping them, the pump should run. You are bypassing the relay in this case and simply sending power direct to the pump.

Joe

Hi,

If it is the security system, then if you leave the key in the on position for about 10 minutes, the security light should turn off and the car should start.

As far as the key, there really isn't anything in it that should cause the vehicle not to recognize it. Also, if you do get a new key, as long as you have the original key, you can program it at home. Here are the directions:

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2006 Buick Truck Rendezvous FWD V6-3.5L VIN L
Adding Keys (Domestic)

IMPORTANT:
- You may add up to 10 additional master keys or valet keys using this procedure when a learned master key is available.
- This procedure adds keys only. The procedure does not erase previously learned keys.
- The keys to be learned must duplicate the mechanical cut of the current key.
- If more than one valet key is to be learned, immediately precede each valet key with a learned master key.

1. With a previously learned master key, turn ON the ignition, with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.

_____________________

Let me know if that helps.

Joe

It's worth a try. Let me know if it takes care of the issue.

Take care,
Joe

I know the receiver and transmitter need to be programmed when new, but I don't think unplugging it would require it. I don't even know if that would cause a no start. The receiver is specific to the key-less entry.

Hi,

The codes indicates a short to power. Take a look through this information and diagnostic procedure and let me know if it helps. The attached pic is the diagnostics.

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2006 Buick Truck Rendezvous FWD V6-3.5L VIN L
B3103
Vehicle ALL Diagnostic Trouble Codes ( DTC ) Testing and Inspection B Code Charts B3103
B3103
DTC B3103

CIRCUIT DESCRIPTION
The remote control door lock receiver (RCDLR) communicates with the body control module (BCM) through the key-less entry serial data circuit. When any button on the key-less entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock, unlock, rear release, or panic alarm request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The BCM also uses the key-less entry serial data circuit in order to communicate with the RCDLR when programming transmitters.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B3103 Key-less Entry Data Link Circuit High

CONDITIONS FOR RUNNING THE DTC
- The system voltage is at least 9.0 volts and no more than 16.0 volts.
- The BCM must be receiving a message from the RCDLR while in the program mode.

CONDITIONS FOR SETTING THE DTC
The BCM detects a short to voltage in the key-less entry serial data circuit.

ACTION TAKEN WHEN THE DTC SETS
The key-less entry system will not operate.

CONDITIONS FOR CLEARING THE DTC
- A current DTC will clear when the fault is no longer present and the ignition switch is cycled.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- A scan tool may be used to clear history and current DTCs.

DIAGNOSTIC AIDS
- Always begin diagnosis with the first DTC listed on the scan tool.
- Perform a visual inspection for loose or poor connections at all related components.
- If the DTC B3103 is a history DTC, the fault may be intermittent.

TEST DESCRIPTION

Step 1 - Step 9

See pic 1

The numbers below refers to the step numbers on the diagnostic table.
3. B+ voltage should be present on the serial data terminal when tested with a DMM, but should not illuminate the test lamp. An illuminated test lamp indicates a short to voltage in the serial data circuit.
4. This step checks for a short to voltage in the key-less entry serial data circuit.

In all honesty, I'm not sure. Anything is possible. Other than testing, it becomes a guessing game and I don't want to see you spend more to fix the issue than needed.

Hope you understand.

Joe

Hard to say but we are glad you got it running for the rough running problem please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken

Hi.
Did you replace one coil or all? This really could be alot, we can try and narrow it down a bit

jim