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joeplow
joeplow, ASE Certified Technician
Category: GMC
Satisfied Customers: 1353
Experience:  Have extensive experience since 1974,engines,ac, & Transmissions since1978
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Why does my truck stalls when I shift gears,from a stop

Customer Question

why does my truck stalls when I shift gears,from a stop
Submitted: 9 months ago.
Category: GMC
Expert:  joeplow replied 9 months ago.

Is THIS a Auto or Standard Shift ?

Customer: replied 9 months ago.
auto
Customer: replied 9 months ago.
does not stalls all the time more after is warm
Expert:  joeplow replied 9 months ago.

Ok , So have you tried to hold the brake & slowly give it the gas ?

Expert:  joeplow replied 9 months ago.

does it stall then ?

Customer: replied 9 months ago.
I put it in parking and is fine if I shift to drive it wants to stall
Customer: replied 9 months ago.
If i give it more gas ill take off.like a lot of gas
Expert:  joeplow replied 9 months ago.

Ok , this could be the Torque convertor Clutch, mostly if it has the 4L80-E Transmission

Customer: replied 9 months ago.
I do not think so when is cold it rans ok. feels like a fuel problem
Expert:  joeplow replied 9 months ago.

ell if it Kills the engine quick with a strong thump its the clutch, however if its just light it sounds like the throttle body should be cleaned.....look under the flaps or as we say butterflies on the throttle body.....has to be very clean to make gas a vapor

Expert:  joeplow replied 9 months ago.

just spray with carb cleaner & use like a old tie shirt to clean

Expert:  joeplow replied 9 months ago.

Also you should put 2 bottle of throttle body & injector clearer ,with High Grade gas like Sunoco High Test

Expert:  joeplow replied 9 months ago.

got it ?

Customer: replied 9 months ago.
it does not make any noise and when on hi speed it feel sometimes like is as cuts out but keeps running
Expert:  joeplow replied 9 months ago.

exactly check & clean

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