Obviously I can't speak for GM, but I've got two theories:
1)It's a quicker resolution to an issue if you can try numerous tests 'in the field'--such as cycling through the functions--as opposed to gathering info on replaced units as they come in through WPC and suspect shipping practices
2)Encoders aren't that expensive one at a time, but multiply that times 5000 units and add labor then the expense goes up
In the past B-W has been very proactive, and has sent engineers around the country(remember H-2 xfer cases in early 2003s?) so I've got a certain amount of faith in them trying to do the right thing. I'll also agree that at the end of the day, it's the end result that counts. Hopefully they'll do whatever it takes to get the issue fixed.
I'm convinced that the Stanadyne pump issue and the GM 5.7 diesel were a big part of why diesel has taken so long to catch on in the North American market. I owned a GM truck that went through 7 injector pumps before 100k miles. GM's reaction to the 6.5 diesel truck issue was pathetic and involved a lot of finger-pointing--so far I don't see that with any HUMMER issues, including this one.
We'd all like to see trucks that never break, but only time will tell what's more reliable.
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