Probably a simple question, but I have a junkyard E67 from an Impala i need to flash to run my 2009 trailblazer 4.2 for a swap. Can i simply flash one of the stock tunes from the repository, or will i have to get programming from the GM website in order to get the base 4.2 config on here? Thanks fellas!
You'll need to use the GM tool. There are a few segments that HPT can't flash but the dealer tool can when it comes to full on re-writes.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Thank you sir! I was hoping to save a step, and the money the GM website charges..
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