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2004 gmc
26,436 Posts
Did you search here (we actually don't keep those specs) or Google in the rest of the net? I just searched for "2006 trailblazer weight spec" and got DOZENS of hits.

Weights: gross vehicle weight rating (lbs) 5,750, curb weight (lbs) 4,523, gross trailer weight braked (lbs) 5,200 and max payload (lbs) 1,227

Here's a list of Load Index versus pounds:

105 2039
106 2094
107 2149
108 2205
109 2271
110 2337

I can't see ever going to weaker tires than the OE Contis, especially if you tow a lot. 105 to 107 is only about 5% difference, but I put on LT versions of my first replacement tires (Goodyear Wranger Silent Armors) especially to get a higher load rating and stronger sidewalls.
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