Poor 2018 Suburban throttle/transmission response
August 13th, 2018, 1:02 PM
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Poor 2018 Suburban throttle/transmission response
I have a 2018 suburban and the low speed (under 40mph) throttle response is not linear or consistent. The transmission shifting also leaves much to be desired. is there a TSB or updated software available at the GM dealer. I have taken it to the dealer twice and they "cannot duplicate the problem" and found no issues. I have 6000 miles on a new vehicle and it behaves very poorly and also shifts down very hard on occasion.
August 13th, 2018, 2:05 PM
#2
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Welcome to the forum.
also welcome to the "We can't design transmission software to shift normally" club. I experienced the same thing with my 2007 and 2010 Tahoes. It seems like it was reluctant to downshift and when you give it a little more gas all of a sudden it would downshift two gears. They also have an extreme amount of torque management that makes it hard to accelerate hard from a dead stop. It sounds like the same problem carried over into the new design Tahoes.
also welcome to the "We can't design transmission software to shift normally" club. I experienced the same thing with my 2007 and 2010 Tahoes. It seems like it was reluctant to downshift and when you give it a little more gas all of a sudden it would downshift two gears. They also have an extreme amount of torque management that makes it hard to accelerate hard from a dead stop. It sounds like the same problem carried over into the new design Tahoes.