|
I also have a similar problem with the 3-4 shift however my is a little different. I have a 99 Z71 ext cab, once the truck is warmed up and I am on the highway it seems to shift into 4th too quickly (at about 35-40 mph) and then the opposite when I am slowing down it takes too long to go down into 3rd. What happens quite often is as I am driving along if I need to slow down coming into a corner to about 35mph the truck stays in 4th, the rpm's drop to 900-1000, then I come out of the corner and put the throttle down maybe 20-30% and the truck stays in 4th, the rpm's stay way too low at 900-1000 and the truck starts to shudder quite a bit because the rpm's are too low. What I do then is hit the throttle down hard 70-90% and this kicks the tranny down to 2nd, the rpm's shoot up to about 2500. Does anyone think that this is also the 3-4 solenoid? I have done the obvious and checked the fluid, I changed the fluid and filter last summer, I checked and have no codes stored. Like I said this only happens once the truck is warmed up, when cold the tranny shifts just fine. It also shifts normal when in tow/haul mode. Any help would be greatly appreciated.
|