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2005 GMC Sierra Power Programmers & Performance Tuners

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Latest Customer Reviews

DiabloSport Trinity T-1000 Programmer Reviews


Exactly what I was looking for.

Reviewed By Donald S (TECUMSEH, OK) Reviewed for a 2005 GMC Sierra —2/13/2016 7:22 AM

Tuner has very good tunes an abLe to upload custom tunes via download or micro chip. Can't beat this tuner the Trinity customer service SUCKS!! I emailed them asking how to make the tuner to power down once the ignition is turned off after 4 days I got a response from them, all they said is to unplug it from the ECM port. When i mentioned wanted to use the gagues feature while driving the CS Rep came back with "sent it back where u bought it an get a refund then". That isn't cool at all.

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TruXP Xtune Performance Tuner Reviews


TruXP Tuner

Reviewed By Mark's C (West Chester, PA) Reviewed for a 2005 GMC Sierra —12/11/2015 9:58 AM

Very pleased. Tranny hits harder now and will brake my 33's loose when I wanna let it! Will not change tire size for my make/year but not a big deal to me. Price is great and would tell you to go ahead and buy it. You will love it!

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Bully Dog Triple Dog GT Tuner (49-State Legal) Reviews


Fuel Economy

Reviewed By Howard M (ENTERPRISE, AL) Reviewed for a 2005 GMC Sierra —12/13/2013 6:07 AM

I purchased the Bully Dog to increase fuel economy on my 6.6 GMC diesel. At first it didn't seem to make any difference so I called their tech support (they were great!) and discovered I did not have the settings correct. Since then I have seen an improvement on mileage and I love the different feel in the over all performance. I am glad I made the purchase!

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