Teaching implies learning, which is obviously not happening. Maybe they can put someone on it that is certified.

 

Actually it could behave exactly the way you describe if some or one of the passages are partially plugged...it only uses certain passages while in certain gears...My truck started shifting into overdrive slower than normal..by that i mean it didn't seem like a good firm shift anymore... and mine made whiney noises too...bottom line is the only thing that can cause that error is electrical, bad solenoid or fluid pressure issue at the solenoid. I eliminated the first two myself before the shop found the third. and since you recently had a flush which is known to stir up debris if not done regularly?

 

Man, I don't even want to think that this might be the problem - Sounds like a couple more thousand bucks at this dealership. I don't want to have anyone else do anything yet because then I am totally out the thousand I have already doled out. I think they have to make it right, at no further expense to me. But, not sure I can get that done.

 

I sent you a pm, Have you read it?

 

the whole assy can be removed and cleaned without dropping the tranny in like an hour and a half....or like it said before you can find the whole assy with solenoids rebiult and clean for $200. and replace it with basic handtools in the same amount of time.... basically if thats the problem you take the receipt from the shop that does this and fixes it back to the dealership and demand at least a partial refund! They can bench test those solenoids while out of the vehicle so the fact that they already replace them more than once claiming they were defective proves they dont know what they are doing.

 

Read and answered. BTW, I have that original transmission shop test instruction pages here:

"Automatic Transmission Diagnosis - 42RE & 44RE & 46RE &47RE - 2000 (2pages)
DTC P0753: TRANS 3-4 SHIFT SOLENOID/TRANS RELAY CIRCUITS

Diagnostic Procedure (BE & BR Bodies)

Then 16 steps are listed.

The only results that they wrote in was STEP 11 PCM ohms = 28 ohms.

 

Standard procedure for the same mechanic to work on the same problem. On the initial visit, he is getting paid flat rate to diagnose, and, supposedly.. fix your problem. On the return trip, it is considered a 'come-back'. They give it to the original mechanic, as there is the real possibility he ISN'T going to get paid on this go-round. No one else wants to work on someone elses screw-up, especially for free.

 

you should be able to actuate the soleniods on a workbench with the proper DC current and see if they function...at this point its been replaced multiple times so we know they were wrong about the diagnosis right?

 

Of course, they were wrong. When I initially went into the dealership, I told them exactly what happened to the truck prior to the code - Had the transmission fluid changed out by a mechanic who swore that a flush would be fine, without changing the filter. After that, the P0753 code set and I start having whining and lagging when traveling over 65mph. Those are the ONLY problems I have had.

So, they (supposedly ran a diagnostic), but they would not give me a printed copy. They said it was the transducer and governor solenoids. I questioned that right away, but they insisted that this is what the 'computer diagnostic' said. Picked it up and it tripped the p7053 within 20 miles.

Next trip, they changed out the 3-4 solenoid. Tripped immediately after doing that.

Next trip, rental car and they changed out the relay.

Each time, it has cost me lots of money. I dread approaching them on the valve body.

 

The service manager from the dealership went for a little ride with me a couple of weeks ago. He swore all was okay, about 20 minutes into that ride, the problem kicked in, only worse than it ever has before. Didn't seem to get out of 2nd gear this time (not just the original overdrive problem). This actually scared me because I had to drive it back to the dealership, praying all the way that this didn't cause the transmission to be totally blown.

In any even, he says that he looked at it and found some frayed wires going to the PCM and said that he believes that this caused a problem in the PCM. Their cost of a new PCM is $1248. But, he said he is having problems getting one so he wants to have mine 'remanufactured' at a cost of about $900.

This is when we had a 'talk' and I reminded him that he already got me for that amount of money replacing a whole bunch of parts that didn't need replacing IF the PCM was the original cause of the problem. I reminded him that the trannie shop said that those same parts tested out okay. According to him, we can 'work something out'. So, why am I not trusting that? BTW, they also screwed up my drivers side window, when to warned them repeatedly not to open it.

He said he would need the van for at least a month. I am now on the search for a company to 'rebuild' my PCM so that I know if it truly was 'broken' to begin with. I am going to post another entry under PCM replacement because this one is getting too long and old.