The previous owner of this Camaro drove the car about 5000 miles a year. Has 123000 Runs and shifts excellent.
Not often...But just about every 2 weeks, the car will stall once during the day. It starts right back up... My first guess is a weak or failing fuel pump? I am aware it can be many things...
Any other opinions and what else to check for is always appreciated Thanks!

(It has a new fuel filter)

 

have it scanned for trouble codes. may get lucky and have code to tell where to look.

 

Plugs, wires age? O2 sensors?

GM fuel pumps tend to fail or work the in between is pretty rare. While plugs wear based on mileage plug wire failure is a factor of heat and time. With your complaint I would verify age and plugs and wires, replace as needed, replace the PCV valve, Clean the throttle body and the IAC motor air port, clean and test the EGR valve and re-torque the intake upper and lower as best as possible. That is all stuff that should be done to a 80-100k car and it would fix 80% of the cars that came in with stumble/stall once in awhile and no check engine lite. If the car is over 100k and is getting poor mileage after all that and there is no codes then do the O2s.

 

I would say absolutely, most of what was mentioned was probably not done and would make a world of difference...
Thanks!

 

Forgot to mention the service engine soon light does come on intermittently, (will test egr, etc.)

The other issue is an intermittent horn. I will start car in the morning, drive to work and no horn...
When I start car hours later and drive home...the horn works. Could this be part of that unhappy cluster problem??

 

if you can get it scanned for codes. check all your fuses and plugins. make sure the blades on the fuses are making good contact with the plugin, sometimes the metal parts and or the receiver the fuse goes into can get corroded or bent so as to not make good contact.

 

will do* I was thinking the relay...
Will go through fuses,plug-ins, etc.
Thanks!

 

First time this has happened...Drove about 3 miles, pulled over to make a call and shut car off. After 3 or 4 minutes, went to start car and it was completely dead. No dinging no lights no power no crank...
I manually clicked open the power lock and opened my door, The lights went on The key was buzzing, had power and she started right up. Besides a possible short,
Is there a stock alarm system on these Camaros that can cause this? If so, can it be easily dismantled?

 

make sure the battery posts and battery cable ends are clean. wire brush the heck outa them. the lead can get a carbon type coating on them that messes with the connection. clean the wire ends at the power junction box, red plastic box on the passenger side fenderwell by the battery. take wires off and wire brush them. theres a ground junction there too. check it for any corrosion or damaged wire ends. check under the dash by the column for aftermarket alarm. while your doing that check the ignition switch for power in and power out.

 

Great
*thank you