Best Answer

Buick should be sued over this one. They admit in their manual that this trunk feature can easily break and they admit that it can kill you, yet they go ahead and implement it with just a warning in the manual that most people don't read.

For whatever reason, the relay switch on the trunk motor can easily fail. I suppose it depends on what position the latch is in when it fails as to how serious the problem. I bought my Park Avenue used the other night knowing it had this problem and that I could solve it. Before I give the solution, here is what my local Buick dealer said "it's probably a bad motor and they cost hundreds of dollars".

As I was removing the grey trunk liner from around the motor I touched the lever on the relay and the motor turned and latch went down. I closed the trunk and opened it again and the latch came up but I could never get it to go down again. So, I unplugged the wires going into the relay. I got a star driver and removed the screw that holds the relay to the motor and latch gear casing. That exposes two metal tabs that lead to the motor. I got a 9-volt battery (I keep them around for my smoke alarms) and two wires that I have with alligator clips on each end. I clipped the two wires to the motor leads and left the wires to hang out of the trunk then closed the trunk. I clipped one wire to the negative post of the battery and then touched the other wire to the positive. Nothing happened (visibly, but the motor was trying to push the latch up. it was already up). Then I switched the wire from the negative post to the positive post and touched the other wire to the negative. The latch lowered. If you make it go too low it won't easily close without slamming, but this method makes it easy to position the latch exactly where it needs to be. Then just pop the trunk and remove the wires. I left the relay switch off and the trunk now operates like a normal trunk.

The latch has two tabs that flip a toggle switch as it raises and lowers. If you have the "trunk ajar" light lit and it won't go out (I either don't have one or it's burned out) then you should be able to plug the harness back into the relay but don't attach the relay to the motor. Just flip the switch down and the light will stay off.

User Avatar

Wiki User

โˆ™ 2015-07-15 18:55:14
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: How do you troubleshoot a trunk lock on a 1992 Buick Park Avenue?
Write your answer...

Related Questions

How many cubic feet is the trunk size of the 1992 Buick Park Avenue?

My manual says 20.3 cu ft.

How do you Pop the trunk from from inside on a 1992 Buick park ave?

how do you pop the trunk from the inside on a 1992 buick park ave

How do you slim Jim 1992 Buick Park Avenue?

I am locked out of my Buick park avenue and have a slim Jim but don't know how to use it

Front fender trim for a 1992 Buick Park Avenue?


1992 Buick park avenue wiring diagram?

i need wiring diagram for 92 buick lesabre

Where is the fuel pump located on a 1992 Buick Park Avenue?

In the fuel tank !!

How much does a cradle mount for a 1992 buick park avenue cost?

The cost of a cradle mount for a 1992 Buick Park Avenue can slightly vary depending on the company or store you buy it from. However, the general price for this part is $120. 00.

1992 buick park avenue location of egr valve picture?

There is no EGR valve on the '92

How big is the gas tank on a 1992 Buick Park Avenue?

It hold 18 gallons of fuel.

Can I get into the trunk through the back seats of my 1992 Buick Regal 3800 4 door?


What kind of cars has April ochoa ever had?

1968 Ford Falcon,1992 Chevrolet Corsica,1992 Buick Park Avenue

What are the front fenders made of on a 1992 Buick Park Avenue?

i think its some type of plastic or fiberglass

What size speakers are on a 1992 Buick Park Avenue?

In the back it's 6x9" easy to change too.

Can you open the trunk of a 92 custom without punching out the trunk lock Missing key?

I have an buick regal custom 1992 and in my glove box there is a trunk release button. yellow. Not sure if this is a standard

Where is the blower motor relay on the firewall of a 1992 Buick Park Avenue?

On my 91 its behind the engine in the center of the firewall

Where is the thermostat located on a 1992 Buick Park Avenue?

just in front of the air intake on the 92 park avenue supercharged model not sure on the standard 3.8 liter

Where is the oil sending unit in a 1992 Buick Park Avenue?

The 1992 Buick oil sending unit can be found on the left-hand side of the engine. The oil sending unit will be a few inches above the oil pan.

On a buick 1992 park avenue what supplies power to the fuel pump relay?

The ECM powers the fuel pump relay

1992 buick park avenue how to reset the Check Engine Light?

After repairing the cause of the code, you can clear it with a scan tool.

Is there an emergency brake located on a 1992 Buick park avenue?

Yes, there is a cable that runs to the rear wheel brake drums.

Where is the starter motor located on a 1992 Buick Park Avenue?

Follow the positive battery cable from the battery. It will lead you to the starter.

WHERE is the fule fitter on a 1992 Buick Park Avenue?

The fuel filter is under the body in front of the drivers side rear wheel.

Where is transmission in a 1992 buick park avenue?

driver side, mounted directly to side of engine block, below exaust pipes.

Alternator good but not charging battery on 1992 Buick Park Avenue?

check the charging fuse and the fuse able link on field wire

Will 24 inch rims fit on a 1992 Buick Park Avenue without rubbing?

no the highest you can go is 22" wit 35 profile