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Message: <blockquote data-quote="Marky Dissod" data-source="post: 27897" data-attributes="member: 13218">GMT800 pickups use torsion bars that are MUCH stiffer than the Tahoe PPV / Suburban Z71 4WD torsion bars.FYI, y'all:[URL unfurl="true"]https://suspensionmaxx.com/torsion-bar-reference[/URL]2000-2007Part Numbers . . . . . . . . . RPO Codes . . . . . . . . . . . . . . . . . . Rate index, notes15048307 & 15048308 . . 6XK&7XK . . . . . . . . . . . . . . . . . . . . 4553 . . . Tahoes, 2WD Suburbans15048309 & 15048310 . . 6XL&7XL . . . . . . . . . . . . . . . . . . . . 4626 . . . Z71?15058265 & 15058266 . . 6YF&7YF . . . . . . . . . . . . . . . . . . . . 4863 . . .---------------------------------------------------------------------------------------------------------------15048311 & 15048312 . . 6XM&7XM . . . . . . . . . . . . . . . . . . . 5638 . . . PPV / SSV / Avalanche15712407 & 15712408 . . 6WX&7WX . . . . . . . . . . . . . . . . . . . 5826 . . . 15528955 & 15528956 . . 6GF&7GF . . . . . . . . . . . . . . . . . . . . 5826 . . . 15058267 & 15058268 . . 6WY/6YH&7WY/7YH . . . . . . . . . . . . . 5913 . . . K1500PU?---------------------------------------------------------------------------------------------------------------15528957 & 15528958 . . 6GG&7GG . . . . . . . . . . . . . . . . . . . . 6707? or 6790? . . .H215528959 & 15528960 . . 6GH&7GH . . . . . . . . . . . . . . . . . . . . 7161 . . .15072933 & 15072934 . . 6WZ/6YK/6YT&7WZ/7YK/7YT  . . . . . . 7267 . . . Z85 / Z60---------------------------------------------------------------------------------------------------------------15528963 & 15528964 . . 6GK&7GK . . . . . . . . . . . . . . . . . . . . 8615 . . . bubba 250015528965 & 15518966 . . 6GL&7GL . . . . . . . . . . . . . . . . . . . . 8782 . . . Z85 6.0L / 8.1L15732338 & 15732339 . . 6XG&7XG . . . . . . . . . . . . . . . . . . . . 9054 . . . snowplow?----------------------------------------------------------------------------------------------------------------HEARD / READ that SUV torsion bars and pickup truck torsion bars are different lengths, and thus not interchangeable ... bad-sad news for me ...ANYWAYSince you did not bother to mention what kind of pickup truck you have, put your VIN in here[URL unfurl="true"]https://www.gmpartsgiant.com/vin-decoder.html[/URL]to learn which bars you already have, and go with stiffer bars ... how much stiffer is up to you ...</blockquote>