Brutal on your tranny man! 
No Manual Shift w/4L60E?
I would NEVER manually shift any automatic transmission VERY BAD!!!! For it hanging in 1st I can only think that if you put it in drive it will hang in the higher RPMS for a longer amount of time. If I am not mistaken I would not doubt that you may have broke something in you transmission if you manually shift it all the time. Devin
Auto the car shifts, manual you shift, sounds like you need to get a manual for the fun factor. Ive know people to think that its ok to do that and have seen some nasty blown trannys. Dont do it, stop doing it, or if its too late which it sounds like it may be get it fixed, and dont think about doing a swap, its too much money and too complicated. Good luck man hope you get er fixed.
Tech Resident
Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
What the hell? Manually UPSHIFTING your transmission is relatively harmless. It's not going to cause much more added wear. I believe manually upshifting a 4L60E does use the overrun clutches resulting in a more satisfying shift and subsequently slightly more wear, but it's not going to break your trans. What do you guys think paddle shifting is? It's manually upshifting. It's manually DOWNSHIFTING an automatic car that is very bad. Manually upshifting isn't that bad, and any trans sponsor will back me up on this. You guys are talking a lot of crap here.
To the OP: under heavy throttle, does it only hang when manually upshifting and it shifts just fine at WOT? Does it bang the rev limiter or just hang there and never touch the rev limiter? I strongly suggest you post this in the Automatic Transmission section, but it sounds like to me a shift solenoid may be sticking. But what do I know? I'm scared of automatics.
TECH Enthusiast
Joined: Dec 2005
Posts: 510
Likes: 0
From: NW burbs of Chicago
There is no such thing as manually shifting a 4L60. There is only selecting a gear or range. This should not be confused with shifting. The shifter is a phyiscal logic selector that works with the computer logic.
When the trans was designed there were needs to be addressed like pulling a load in hilly condition, low traction and varous others. Hot rodding and getting a fast launch from a roll were not in the plan.
Cars that come with paddle shifting have new logic in the shift programs that work with the throttle, the timing, fuel flow, speed sensors, line pressures, clutch positions and more. These are used in a way to give the driver the sense of control (not actual control).
In reality though if you want to shift get a manual. If you want your auto to shift differently, modify it!
When the trans was designed there were needs to be addressed like pulling a load in hilly condition, low traction and varous others. Hot rodding and getting a fast launch from a roll were not in the plan.
Cars that come with paddle shifting have new logic in the shift programs that work with the throttle, the timing, fuel flow, speed sensors, line pressures, clutch positions and more. These are used in a way to give the driver the sense of control (not actual control).
In reality though if you want to shift get a manual. If you want your auto to shift differently, modify it!
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9 Second Club
Joined: Jan 2006
Posts: 457
Likes: 1
From: Kinston, NC
because "drag racers" aint drivin stock autos. manually shifting in a 4l60e is pointless unless ur trying to trick everyone in town to beleiving u got a 6spd, but why u want to do that? just put in in D and b***h slap all those 6spds haha
Teching In
Joined: Aug 2007
Posts: 38
Likes: 0
From: pekin, il
Originally Posted by BLK85
If its bad to manually shift an auto why do most drag racers not have problems when shifting the auto when racing down the strip?
Originally Posted by BLK85
If its bad to manually shift an auto why do most drag racers not have problems when shifting the auto when racing down the strip?
Manually shifting an auto doesnt hurt anything! Its more harmful to leave the car in overdrive and and hit WOT. The reason your trans wont shift, is because you have the throttle wide open. The computer thinks your trying to stay in "passing gear". You can tune the pcm to adjust your 4l60e. Thats normal, thats why people get tunes.
Staging Lane
Joined: Mar 2006
Posts: 74
Likes: 0
Originally Posted by CodeRed2000SS
because "drag racers" aint drivin stock autos. manually shifting in a 4l60e is pointless unless ur trying to trick everyone in town to beleiving u got a 6spd, but why u want to do that? just put in in D and b***h slap all those 6spds haha
But I like to hear my exhaust lol.
Originally Posted by zebradz28
nhra cars like top fuel and funny cars arent automatic they are all manual they only use the clutch to take off and then the tranny gears are designed just to slip together without grinding
Originally Posted by chae
Because they are built transmissions and not stock from a production car
upshifting for a 4L60E is completely controlled by the PCM. For example..if you start off in first gear, and go 3/4 throttle...as soon as it hits 2500 rpm, bump it to 2nd gear...The transmission is not gonna shift immediately to 2nd gear just because you bumped the shifter into 2nd. This is because at that throttle position it knows, to hold 1st gear until a certain RPM/speed..You moving the shifter into 2nd gear is just giving "permission" for the PCM to shift into 2nd gear, but that is only gonna happen when PCM feels its necessary to make the shift.
Originally Posted by blk97z28
Do you guys drive in D OR overdrive?