4l60e Converter Lockup Problems

When diagnosing driveline problems one of the bigger challenges can be diagnosing a bad torque converter versus a bad transmission. Also when commanding lockup manually with tech2 I get nothing.

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4l60e converter lockup problems. All the shifting is fine what would cause this. The 4L60E transmission weighs 146 pounds dry and 162 wet. Checked around the internet and people were saying the valve body has problems on the 4l60e and since mine had really nasty fluid decided to do a valve body repair and replace the TCC PWM solenoid anyway.

4L60E goes into neutral when shifting into third gear. Make sure you arent confusing the shutter of a poor running engine with the vibration of a transmission with a loose converter. I had it scanned at a trannie shop but shows no codes.

It slips in and out while on the highway. I have an 01 silverado 1500 4x4. For the converter clutch to apply two conditions must be met.

The main symptom of a TCC solenoid failure is the converter is not locking up. Lockup reduces slippage in the converter increasing fuel economy. There are several clutches in a torque converter.

I have been getting the p1870 code whenever i was on the highway and the torque converter wouldnt lock up and then it would be. Its in a 2002 chevy silverado 2500hd. Its friction wear products clog the solenoids as well as the hydro block channels.

I replaced the entire valve body and torque converter and still no lockup. The main problems are the rapid wear and tear of the converter lock. So anything over that the converter should stay lockup up and Im usually going about 45mph when the convert unlocks though Ive had in do it at freeway speeds to.

Below is a list of some of the most common issues with the 4L60E. No Third Gear You put the vehicle in drive start off the transmission and shift to second gear. Torque converter problems can be both very time consuming and expensive.

When the converter is not locking up you will notice the engines RPMs staying higher under load at highway speeds. That is either the torque converter or harmonic balancer. Are you sure this is a issue on a load sense trans shift.

Now after the truck gets warmed up it sometimes will not lockup above 75 unless I back off the throttle some then after it locks I can get back on it and it will stay locked. The torque converter is a part of the transmission and you will notice that the engine will hesitate and be underpowered when it is locked up. Curt talks to us about the top 3 common problems with the 4L60E and 4L65E like the 1870 TCC code burnt 3-4 clutch pack and broken sunshells.

Internal transmission fluid pressure must be correct. I have a 4l80E and having trouble with the converter not staying locked up while at cruising speeds 70 to 80 mph. When your 4l60es TCC solenoid begins to fail there are a number of obvious signs.

Ive verified the computer is commanding lockup and checked the solenoid actuates when the computer commands lockup. Need help 4l60e torque converter lockup problem. 53l with the infamous 4l60e.

Often people think that their transmission is going out because the symptoms of a bad tour converter are so similar to the symptoms of a bad transmission. I asked about this issue and this is his response. Here the torque converter operates in an unusually stressful mode disperse the powerful machine by locking when the driver presses the gas pedal hard into the floor.

Here are 3 symptoms of a failing 4L60E transmission and how to diagnose the problems. They are wanting to rebuild it. The ECM must complete a ground circuit to energize the TCC solenoid that moves a.

Below is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. 4L60E falling out of lockup. There can be many different causes for certain engine problems.

Here is my 4L60E locking and unlocking at the commanded mph. Have replaced all solenoids also. 4l60e torque converter wont lock up.

Torque converter lockup can have a major impact on how your engine performs. Everything works fine until you go to the third gear. If Im at 55mph it stays locked.

It requires 84 quarts 964 torque converter or 114 quarts 1181 torque converter of transmission fluid Top 30 Common 4L60E Transmission Problems and Repair. Another symptom of a failed TCC solenoid is a fault code. I had my truck tuned by Justin at Blackbear Performance.

All gears work fine and the only trouble code is p1870. The partial lockup is a bit normal as GM doesnt ever fully lock the converter it. The symptoms are often quite similar.

New to the forums here. I have the exact same issue between 50-60MPH in my 2004 Z71 53L4L60E 373 with a 265 tire. If the torque converter is locked in the drive or idling gear and does not release the transmission you most likely have a problem with the converter clutch.

Last 500mi I have noticed the torque converter is having some trouble locking up in overdrive. I bought the truck with 78000 miles on it and was never told it had the transmission replaced. Normally it would lock above 75mph under all conditions unless it was floored and it was in 3rd.

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