GMCTruck21
01-17-2012, 08:59 PM
I was't able to find a thread like this... wondering if anybody has had the same problem, or knows what to check.
I have a 02 sierra with a 4l60e. When I am in second the truck kicks down to first and roars.
but if I am in 3rd or 4th it's not kicking down worth 10 cents. it just drags it's tail. the rpm's jump up to around 3200 and just barely
climb.
no dtc's, transmission was flushed 20K ago. the fluid is still nice and red. newer fuel filter, plugs & wires.. i also was able to run a machine here at school to clean out the injectors and fuel lines and everything else.
I have a 02 sierra with a 4l60e. When I am in second the truck kicks down to first and roars.
but if I am in 3rd or 4th it's not kicking down worth 10 cents. it just drags it's tail. the rpm's jump up to around 3200 and just barely
climb.
no dtc's, transmission was flushed 20K ago. the fluid is still nice and red. newer fuel filter, plugs & wires.. i also was able to run a machine here at school to clean out the injectors and fuel lines and everything else.