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Make sure the your truck still has LLR tires.
This was one of GMs cheap tricks to improve the highway mpg of the hybrid trucks over the non hybrids.
Because with out the aero tricks and LRR tires hybrids and non hybrids got almost the same highway milage.
These aero features and LLR tires could have been put on any truck or SUV but GM only saw fit to put it on hybrids.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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