Question about 1999 Chevrolet K1500

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Tranny shifts really hard only when ive been driving for a long time but it doesnt take long or rev up the rpms and then shift it shifts right on time but VERY hard all i have two do is turn the truck off for about 1 minute turn it back on and it goes away it shifts fine after that.any similiar problems or sugg. i think it has something to do with the comp. but im not sure HELP....

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Valve body could be sticking.if computer sees a problem with tranny it will go into failsafe mode which means full line pressure this causes a hard shift. there is a repair kit for valves in the valve body

Posted on Aug 18, 2008

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  • Chevrolet Master
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Try getting our computer reprogram it hapen to me on my malibu hope it a fix for you and a fixya rating for me thanks pierre

Posted on Aug 10, 2008

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1 Answer

Idles high from first to second gear .


Define idles high like its going high rpms before shifting or the engine itself is high reving if its high rpming when shifting its mostly you tranny going out you can try tranny fix oil I used it on my truck when it had shifting problems and ive had no problems since it takes a few days to work though and if its the motor itself it could be a lot of things but I dont know much of the problem based on what you told us

Mar 10, 2014 | 2004 Hyundai Elantra

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Tuck is not shifting properley checked tranny fluids they were good ?checked visually conections to tranny eletrical? tranny seems strong but has to rev up to 32500 rpms befor it shifts? whats that all...


Chances are you have a 4l60e transmission.(or one of its relatives) Shifting is done through the engine computer and internally by shift solenoids, on command. The system needs to be scanned to make sure that proper signals are going to the solenoids and that the solenoids are working properly.
By the way....I hope your engine really isn't turning at the rpm you stated....even Indy cars can't rev that high!!!

Jun 28, 2011 | 1996 Chevrolet K1500

1 Answer

When driving the truck tends to rev way higher than normal, when you are at a stop and then try to go depending on how hard you hit the gas it will bog down almost dying, or die. also when you are driving...


sounds like your torque converter going bad. change the tranny fluid, and look for metal shavings (have a pro do this), sometimes you can squeeze enough life out of a bad tranny/torque converter by changing the fluid, or it might just be a clogged tranny filter. change the fluid, and if theres metal shavings in it, sell it while it still runs.

Mar 26, 2011 | 1993 Chevrolet K1500

2 Answers

After a long drive, especially in warm weather my 1999 Silverado shifts really hard going from first to second..then it goes away ..might be a heating problem?


The hard shifting you are experiencing is caused by slight wear in the valve body in the transmission. It doesnt mean your tranny is bad though. This hard shift will only usually occur when the transmission temp reaches 93 degrees. So you could rebuild the valve body or sometimes a tranny flush is a temp fix.

Sep 22, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Kicks really hard when shifting from park to drive... but not from park to reverse, neut., 1st, 2nd, or 3rd. speedometer won't work. won't shift outta low gear, just revs up like it's in neutral.


sounds to me like the vss (vehicle speed sensor) isnt working...its on the passanger side of the car on the top of the transmission..(just above where the right side axle is installed) youll see a 2 wire connector...sometimes they come unlpugged and when that happens no speedometer=no shifting because it doesnt know that its in motion,therefore doesnt know when or too shift..,

Apr 28, 2010 | 1999 Chevrolet Cavalier

1 Answer

Transmission is not shifting properly on my 2000 nissan frontier 2wd pick up, auto It revs at 3-4000 rpm instead of a nice consitent 2000rpm, revs real high and doesnt change gears intill 20 mph, it doesnt...


You could have a bad valvebody in your transmission or a bad pump in your transmission or your clutches are bad. In any case you have a bad transmission. Please rate my answer.

Nov 17, 2009 | 2000 Nissan Frontier

1 Answer

92 prelude si (auto)


With normal acceleration the 1st to second shift point should be around 2500-3000 rpm. Most of your shifts under moderate acceleration will take place at this same point or when there a light load on the transmission. Under hard acceleration the RPMs will climp higher due to increased power needs and the computer will shift when less power is needed or the RPMs climb to an unsafe speed say5000-6000rpms (depending on where yours redlines). Also going up a steep hill will raise the RPMs higher and goind down a hill will cause a faster shift at lower RPMs. These can always be altered by an individual owner by adjusting shift points, using performance parts and if you have problems (low tranny fluid/trans issues). Your trans RPMS are fine and will vary depening on how your foot accelerates. The shift pattern should be the same every time you drive slow/medium/fast/, look for changes in those patterns you will also catch a problem early.

Jun 14, 2009 | 1992 Honda Prelude

1 Answer

A/T wont shift upon starting engine....needs engine rev-ups.


it sounds like the tranny fluid is low or it needs to be changed i really think its low!

Apr 20, 2009 | 1994 Honda Accord

1 Answer

Doesnt sound or feel like my cars shifting AUTO Transmission


Have You Checked Your Transmission Fluid?
Or Even Change It That Always Makes A Work Of Difference.

Jan 06, 2009 | 1990 Nissan 300ZX

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