Jesse masterson
Platinum Member
I recently purchased a 85 k 5 blazer with a 6.2 Detroit diesel runs great but when I out my dk 45 on trailer it won't pull up any kind of steep hill the tranny isn't slipping the motor Rpms slow down to a near stop then I put it in low lock 4 wd to get up a 45 degree incline do you guys think the motor is weak orwould a change of gears be on order I believe it has highway gear 307s I think I only use it rarely not a daily vehicle