Question for 93-99 suburban 5.7 drivers
#4
CF Beginner
Join Date: Apr 2011
Location: Woodland/Jacksonville Alabama
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My 99 K1500 Suburban gets about 16 or 17 2WD highway, and prbly 13-15 when in 4WD, but I only use all 4 wheels offroad or in bad weather, and everynow and then to free up and lube the joints