Std coil spring options

[Mozzer]

I am trying to identify a more compliant coil spring to install along with Bilstein or Eibach shocks.

 

GM parts sites list about 20 different part numbers for front springs, all based on different option codes (6A2,6CT,6D1, 7D8,7FQ,7FW,7SS,Z56 etc, etc). All say they fit my truck (2014 WT2) but some also show Escalades, Yukons etc as fitments which would lead me to believe there are numerous different spring rates & / or lengths.

 

Is there any way of relating truck models or spring specs to these option codes?

 

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[Grumpy Bear]

Some GM tech must know, right? 

[Mozzer]

Here's hoping [emoji1696]

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