Interesting. I may give them a call to see if they have that gizmo at my local Autozone. Thanks

Yes. Both fobs have two lines of text -

CANADA: 109G12021
MODEL/FCCID: LHJ011

Is that the Canadian GM part number or something else? Maybe the Canadian number is a specification (or performance specification) similar to the FCCID. When I perform an internet search on the 109G12021 or the LHJ011 I find lots of key fob sellers.

When I look on Chevrolet parts web sites I come up with the following GM part number: 21997127 and that number also leads me to the same key fob sellers.

I think that'* the candian part number. My remote says gm/uta number then under that fcc id and under that the Canada number.

Okay, I just went to Autozone down the road and tried their key fob tester. Here are the results.

1) for the key fob I was able to program - the fob tester recognizes it and flashes the green RF light four times. The green light on the tester is relatively bright.

2) for the key fob I was not able to program - the fob tester recognizes it and flashes the green RF light two times. The green light on the tester is relatively bright.

3) for comparison I checked the key fob from my 1996 Suburban - the fob tester recognized it and the green RF light flashed four times. The green light on the tester was VERY DIM. This key fob has worked for years and I've never changed the batteries. However, I do have to stand relatively close to the vehicle for the fob to operate the locks on the car. Maybe that'* indicated by the dim green light.

So what'* next? Does the number of flashes indicate anything? Or is it coincidence that the fob that works flashed four times and the fob that doesn't work flashed two times?

Arrggghhh! This should not be this difficult. I'll talk to customer service on Monday and then decide if I need to return the non-working fob.

Thanks