Interesting observation

[MountaineerTom]

Ok, I'm not one to drive so fast on a regular basis that I hit the speed limiter a lot. Actually, I had only done it twice before just to see what happens. Both times it was right at 97 MPH. The last time i did it was probably a couple years ago. Well, tonight I was coming back home and was on a long stretch of road, so i put it to the floor again. This time it went to 105 and seemed to still be going, but I let off. Now, the only things I can think of that I've done that would remotely be related to this sine the last time I hit the limiter is

 

1) I changed the BCM out. I put one in from a Tahoe so I could get the headlight override and program my own door locks. I highly doubt the BCM has anything at all to do with it though.

 

2) I swapped out the original instrument cluster for one from a Denali back in December '05. I bought it from Jason Pendlum (of JP Customs) and he did the programming of mileage and hours for me before he shipped it out.

 

This was a big suprise because I thought that was controlled by the ECM (or is it PCM?), which I have not changed.

 

When the truck was under warranty, the dealer flashed the ECM/PCM with some updates, but I highly doubt they raised the limiter.

 

Anyone else notice anything like this? I know a lot have swapped clusters and had the ECM/PCM tuned, but has anyone swapped only the cluster and noticed the limiter raised?

[JimG]

Who tuned the ECM ... or PCM? In my '03, the speed limiter is controlled by the PCM. Removing the speed limiter is an option for a Westers tune. Not sure about other tuning services/programmers.

[MountaineerTom]

Who tuned the ECM ... or PCM?  In my '03, the speed limiter is controlled by the PCM.  Removing the speed limiter is an option for a Westers tune.  Not sure about other tuning services/programmers.

 

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No one. It still has the original one in it, which has never been removed.