reduced engine power and service stability trac light is on

[tray]

2009 gmc sierra truck, reduced engine power and service stability trac light comes on in 4x4 is hard to shift and pulls forward while holding the brake

 

[tray]

2009 gmc sierra truck

 

[98trck]

does it have the same symptoms in 4X4 HI Range and LOW Range?

 

[tray]

It hard to put in 4x4 because it starts pulling even though I step on the brake pedal and then stalls out.

 

[98trck]

wow i am old school ( stick shift ) is it still hard to shift into 4x4 if the trans is in neutral ?
how many miles on the truck?
lift kit six inchs or more ?
has the transmission N transfer case been serviced?