4t65e PCS Replacement, P1811, Long Shift, Chevy, GM PT1




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4T65E Transmission, No Up Shift P0121,P0122,P1122 TPS Related - Transmission Repair
4T65E Transmission, No Up Shift P0121,P0122,P1122 TPS Related - Transmission Repair
Transmission Pressure Control Solenoid (PCS)
Transmission Pressure Control Solenoid (PCS)

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James Mullis: I forgot to unhook the steering knuckle before I drop the motor. Will this ruin my rack and pinion? 

Dustin Mozader: You know I just yanked the driver's side bolt from the rack and that was enough. Left the passenger bolt in there still tight and never messed with the steering shaft.

Dartheomus: Very nice set of videos. Thank you for posting them. I'm trying to decide whether I should try this myself or not. I have a 2000 Buick Century w. 60k miles that intermittently shifts hard. The fluid is still bright red, and doesn't smell burnt. There does appear to be a grey coating on the dip stick. (clutch material?) I took it to the mechanic for diagnostic. He drove around town and said sees a 2-second delay on shifting. His opinion is that the clutch is too far gone, and he recommends not replacing this solenoid. He says to drive it till it dies, and decide what to do from there. I'm not entirely convinced since it only starts shifting hard maybe once or twice a week. I would think that if it's shifting 2 seconds late all the time, I would feel it... maybe not? Since you obviously have a lot of experience with the 4t65e, what do you think?

James Mullis: I got a 05 malibu 2.2L is it around the same process?

vic hernandez: Thanks m ph, this is great vid on a subject few dare to post. appreciate all your vids, keep them coming. my 2001 monte carlo, 3.4L, is stuck what appears to be third gear, very slow acceleration but good going around 45-55 mph, code says shifting solenoid, so assuming is just 1-2 solenoid. should I replace other solenoids whle there - tcc, pcs, and 3-4 shift solenoid? or does experience tell you to leave well enough alone and just replace 1-2 shift solenoid. thanks again

BmikeCR88: Where you get that slid hammer axle puller

JR Shook: uhmm... video goes from changing shifting solenoid to doing something with the steering. where's the rest of the vid for the transmission, man?? :))

archaictext: Hey m ph, thanks for the great videos! Do you happen to know if this method would work for a 2005 Buick Lesabre? 

Greg Czarny: What kind of drill did you use for this?

lLarceny xX: I get this code but only when its hot out. Hard crap from 1-2 and 2-3 everything else feels fine. I know if I bring it to a shop they will try to rape me. Are there any alternatives and what consequences can come from driving it w/o getting it fixed?

joe bolla: what am i looking at for price of labor i have the same car and same problem

Mr.Butler: This was very helpful. I was quoted $1800 to rebuild the trany on a 2001 Buick Century with 127K. I dropped the pan and changed the filter and fluid first with no luck solving the hard shift in each gear and the engine code. Cut apart the old filter casing and the filter element looked good. So I gave this repair a shot and we have been trouble free for three weeks now. We ended up removing three of the four engine cradle bolts instead of the two shown in the video. Re-hooking the steering shaft to the rack - yeah - patience -determination - wow - it took two of us about 45 minutes to re-engage that - very difficult. But now that it is done - saved $1700 - I am pretty happy to have done this in my garage. I have about 15 hours (est) in the repair over two weekends.

davedaman9: whats the cost for the parts and labor ? 

LNC4P: M PH, my trans has a delayed 1-2 and 2-3 shift, both of which happed right around the same time. It feels like a disengagement, a 2 sec delay, then engagement at low to mod accel, a hard shift after "engagement" if done at high accel. 3-4 seems fine. All down shifts are fine. Replaced fluid, no change. Temp change doesnt have an effect either. Whats your thought, PCS?

slipsstreams: I am working on a 2000 Buick Century with hard shifting in all gears and the p1811 code in its history. Flushing and changing the filter had no effect and I kinda figured it was the the pressure solenoid after talking to a few techs. I will be taking this on tomorrow so I know I will be watching this more than once. Thanks for putting together these videos it already has answered a lot of concerns I had about doing this job.

Timothy Tim: I dropped the pan 2 times found a lake of aluminum particles I hope I caught it in time. The valve body is another area where there is major wear on aluminum with the solenoids and valves. Other than the flaw in the 4th gear hub splines not being harden up and until 2003 and the clutch plates it's a good transmission. I had a Lumina with a 4T60 trans and never had a problem with it until I got my recent car. The shifts now are nice and crisp and firm and no more P1811 code.

Timothy Tim: I have the 4T65E and had the P1811 code but when I first bought the car the trans fluid was very dirty that you could not even see through it. Started to get that code and decided to put a Transgo shift kit in it and no more code. Yes my trans would start to shift hard in all gears when hot and set that code before the shift kit The PCM senses the lazy shift and sets line pressure in high mode. Have not checked out the solenoids because I do not have a place to drop the trans and take cover off

Victor Rios: love ur videos.. the issue dats driving me crazy hope u can help me bro. Bought an 01 impala 3.8 148xxx mile on it for $350 off a friend wit a bad tranny. Drove car home bout 3miles no issues at all. But noticed that at cold starts I put it in drive reverse or any gear n it slips until warm up did a diagnostic no codes for tranny beside bad o2 sensor. Did a pan drop changed filter gasket n fluid still no solution please please help wat can be the cause of this. Thank u

m ph: That it was

EnviroRico: Thanks for the video! Did this job over the weekend - video helped tremendously! Worst part? Getting to the case cover! :0) I took the two bolts off the rack and pinion and suspended it, rather than trying to get the steering knuckle off and back together. Replaced the PCS, TCC, and both shift solenoids. Runs good now... so far anyways! Thanks again for your help!

m ph: No prob, glad the videos helped. Every time I have a successful fix it feels like such an accomplishment. To hear success stories due to my videos is even better.

m ph: Most of the time the PCS going bad causes delayed/long shifts. I would have to look at your 1-2 shift timing with a scan tool to see where its at. Under 0.5 seconds is ideal for a shift. Are all your shifts hard or just 1-2 after it warms up? Your problem could be in multiple places, 1-2 Accumulator, valve body, pcs, MAF dirty or TPS out of range. Check the fluid level/condition hot. If this is Ok I would next try a 10oz bottle of Red Lube Guard.

m ph: As far as rebuild cost, I have seen anywhere from $795 cash and carry to $2500.

m ph: No Tech 2, just have a unidirectional OTC scanner. Its good for checking basic stuff like shift timing. Most of the 4t65e issues I see is with the input piston wearing on the inner surface where the seals ride. This will cause a condition that feels like its banging into gear when started from a stop. If you have a scanner check your 1-2, 2-3 shift timing. If this is over 0.6 seconds it will feel harsh. If this is your case the problem is more than likely the PCS in need of replacement.

m ph: True on the accumulator pins wearing in the center part. I had a trans eat up the center part of the accumulator ans send aluminum particles throughout. Required a complete rebuild.

m ph: Try dropping it in manual low and see if it still slips. Your problem sounds like a dried up/hard input piston lip seal. The trans would have to be broken down and repaired/rebuilt in order to fix this. Try a bottle or two of Red Lube Guard, this may help a little.

meTimetraveler: Three questions, I assume you have a tech 2, how much longer do you suppose GM will support the tech2 or the program will go beyond 32meg,? what do you think of the MDI ? I have an Impala w/ the 4T65E , some times when I start out , a few feet , i get a feel like a harsh shift, , usually happens for a few days, then nothing for weeks...most of the time if I drive any long distance, usually if I stop and then startdriving I get harsh shifts

Victor Rios: nice videos

Timothy Tim: The accumulator seals sometimes stick because the accumulator walls get glazed up and need to be honed out with some scotch brite cloth to restore a cross hatch pattern in it so the trans fluid can keep the walls lubricated for the accumulator seals. Those pistons in the accumulators do become worn out with the center pins and evidence of that is in the trans pan during fluid changes. Those pistons are not expensive so replacement does not cost much. The springs do become weaken also.

ChiCity773: I have an 03 impala same engine and trans, my problem is that it shifts fine on a cold start but after 4 times of shifting from 1-2 gear it starts to shift pretty hard. Would this be a pcs or a valve body issue?

JIM ANDERSON: 5:58 Big fart.

Victor Rios: Thanks for the response I will go tomorrow n pick up 2 bottles hope it works and how much to rebuild a tranny like this I live in Bronx NY thank you
Rating:
4t65e PCS Replacement, P1811, long shift, Chevy, GM PT1 4.5 out of 5

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4t65e PCS Replacement, P1811, long shift, Chevy, GM PT1