Problems please help
#1
Problems please help
2008 GMC Sierra SLT 272351km
Ok so here's the deal.
As soon as I shift into drive or reverse with my foot on the brake the truck wants to go, I can barely hold it back sometimes, if I am on gravel or wet pavement the tires slip and spin. This is the same when coming to a stop. Always rough shifting to N, P, R because its constantly engaged.
2nd symptom
If I stand still leaning on a curb my truck will not climb the curb and boggs right down when I give acceleration and blows black smoke. On pavement will not do a burn out unless I go into rolling burnout and then **** lets hell loose.
Transmission heats up pretty good as well and whines as soon as put into drive or reverse
Its performance tuned from the dealership, dyno at 495 hp, only after market piece is the exhaust MBRP. this problem has only started 5 days ago.
Air filter is good, oil changed, fuel filter changed, transmission filters and fluid changed belt is good. No codes, brakes are good
Transmission is smooth, shifts smooth, all the gears work, trailer mode manual shifting
I know can't be the only person to run into this problem before. I suggest the torque converter. but trying to figure this out before paying money.
Thanks
Ok so here's the deal.
As soon as I shift into drive or reverse with my foot on the brake the truck wants to go, I can barely hold it back sometimes, if I am on gravel or wet pavement the tires slip and spin. This is the same when coming to a stop. Always rough shifting to N, P, R because its constantly engaged.
2nd symptom
If I stand still leaning on a curb my truck will not climb the curb and boggs right down when I give acceleration and blows black smoke. On pavement will not do a burn out unless I go into rolling burnout and then **** lets hell loose.
Transmission heats up pretty good as well and whines as soon as put into drive or reverse
Its performance tuned from the dealership, dyno at 495 hp, only after market piece is the exhaust MBRP. this problem has only started 5 days ago.
Air filter is good, oil changed, fuel filter changed, transmission filters and fluid changed belt is good. No codes, brakes are good
Transmission is smooth, shifts smooth, all the gears work, trailer mode manual shifting
I know can't be the only person to run into this problem before. I suggest the torque converter. but trying to figure this out before paying money.
Thanks
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