My 2007 Tahoe with 16000 miles has started to squeel upon start-up. It seems to only do this when remote started and only happens every couple of times. the engine starts and about 2-3 seconds later get a 3-4 second squeal and then it stops. Anyone else experience this and what it could be - assume it is serpentine belt but what should I tell the dealer in case they can not replicate the problem.

Thanks!

 

my 89 chevy does the same, has serp setup and does it for around 5 to 10 seconds then goes away...iv'e had no problems occur from the sound...if under warranty take it to them and tell them to have a listen or explain it to them excatly what the sound is....good luck..

 

Here's what I think it is:
When you start the engine with the key, a beefy solenoid jams the starter gear into the teeth on the flywheel. When you let go of the key, a mondo spring pulls the gear out of the flywheel teeth and the starter quickly spins down and parks itself. The whole process takes a couple of seconds.

When you use the remote start (I have one too), I'm under the impression that the process of pulling the starter gear away from the flywheel takes 4 to 6 seconds. During this period, the starter is spinning with the engine RPM (don't know whether it's under power or not). The squeal you're hearing is the starter armature shaft bushings or bearings complaining about having to spin that long of a duration.

I have 59,000 miles on my 2007, and it squeals a little bit with the remote starter. Listen to the starting sequence when you use the remote, and you'll hear the starter disengage 5 or 6 seconds after the engine is running.

I would be curious to see if that noise happened when you started the engine with the key, but kept the key in the crank position after the engine was running. You go first!

 

Just tell them when it happens and what it sounds like. Regardless of what you tell them if they can not duplicate it they will not do anything. The service ticket will just say " unable to duplicate customers concern at this time"

 

Since the ECM starts the engine w/ a momentary twist and release of the key, I'll bet that you can't keep the starter engaged by holding the key in the start position.

I do know that my remote start fails about every tenth try.