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kalamykid
kalamykid, Shop Owner/ Tech
Category: Buick
Satisfied Customers: 3364
Experience:  I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q
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Buick Rendezvous CXL 2002 buick rendezvous will not shift

Resolved Question:

2002 buick rendezvous will not shift into final gear. converter will lock up in 3rd gear. when you press the brake and the gas at the same time the converter will un lock. What is the issue?
Submitted: 3 years ago.
Category: Buick
Expert:  kalamykid replied 3 years ago.

kalamykid :

Is the check engine light on when the engine is running?

Customer :

no check engine light

Customer :

no codes

kalamykid :

Is there a light on the dash that says o/d off?

Customer :

nope

Customer :

just wont go into final gear

Customer :

bought it this way

kalamykid :

The lock up converter shouldnot engage till it is in 4th gear

Customer :

well I had a guy tell be to drive it then hit the brake and the gas at the same time.

Customer :

So I did and u can here the convter unlock or somthing like that

kalamykid :

You would not hear the converter lock up or unlock.

Customer :

I know a little bite about transmissions just have no clue on this one

kalamykid :

Does the car have a tach?

Customer :

you can see it in the RPM's

Customer :

when the converter is locked the rpm wont jump up like it does when it cold

Customer :

as soon as it warms up it will lock

kalamykid :

Does the car have a tach?

Customer :

yep

Customer :

runs 2800 at 70mph

Customer :

to high

kalamykid :

when you are at 50 mph can you drop the shifter into 3rd gaer and the tach come up in rpms with out changing the pressure on the gas pedal?

Customer :

wont change a bit

kalamykid :

if you are going 50 mph and do not move off of the gas pedal and lightly touch the brake pedal do the rpms go up or down

kalamykid :

just enough pressure on the brake pedal to turn on the brake lights but not hard enough to apply the brakes

Customer :

Transmission Solenoid?

Customer :

they go up

kalamykid :

how far up

Customer :

200

Customer :

not much

Customer :

just like my truck with the Allison

kalamykid :

At 70 mph andin 4th gear the rpms would be around 2600

Customer :

when a converter is lock the engine will not free rev.

kalamykid :

so 2800 is about right

Customer :

its almost 3000 grand on the interstate

kalamykid :

that is true only if the clutches in the trans are holding correctly.

Customer :

its not in 4th gear

Customer :

I was told when i bought it it dont go into 4th gear.

kalamykid :

Ok try this and lets see what the trans will do. find a straight section of road

Customer :

k

kalamykid :

ButI need to know what ithe trans is and is not doing

Customer :

been driving it this way for like 1.5 years

Customer :

k

Customer :

I can take a Video when I get home and the post it or send it to u

kalamykid :

start off in manule low 1 and get up to 20 mph and shift to 2nd with out changing pressure on the gas pedal. When the speed gets up to 30 mph shift to 3rd. and at 50 shift to 4th

Customer :

u can manually shift it through the gears

kalamykid :

let me know if you have a drop in rmp for all 4 shifts.

Customer :

wont drop in D

Customer :

1 2 3 D

kalamykid :

then get up to 60 and let off of the gas pedal slightly and see if the trans will slow you down

kalamykid :

the shifter will not gointo D

Customer :

1 raaaaa 2 raaaa 3 raaaa 4 nota

Customer :

the shifter will go into D but the trans wont

kalamykid :

if you are going 70 mph and slightly let off of the gas pedal does it fell like the brakes where applied?

Customer :

it will slow u down yes and if you put it drive the rpm's will drop all the way down but no gear but if you leave it in 3rd the rpm's will stay high till you loose speed

Customer :

yes

Customer :

light brakes

Customer :

just have the cash for a new/used trans

Customer :

It a very nice SUV just needs this issue fixed

kalamykid :

this will not be a shift solenoid problem. If it where you would get a code for it.

Customer :

Hmm

kalamykid :

the problme is going to be inthe clutches for 4th gear them self.

Customer :

Well should I drop the pan

kalamykid :

i am suprized you are not getting a gear ratio error code now

Customer :

change the fluid? Can u find out if this is a common issue?

kalamykid :

Yes drop the pan and see what is in the bottomof the pan

Customer :

It wouls if it was a speed sensor

kalamykid :

i do not have to find out. I am a trans rebuilder and I see it all the time

Customer :

would

kalamykid :

NO

kalamykid :

If a speed sensor was bad you would get a codefor it

Customer :

Well I built my Allison 1000

Customer :

ATS kit

kalamykid :

allisons are much like a th400 trans

Customer :

easy

Customer :

this is a Pain in the ass

kalamykid :

the 4t60 and 65e transmissions are a little bit harder but not that bad

Customer :

A pain to get out with out a lift and it's AWD

kalamykid :

More parts and smaller parts at that

kalamykid :

You said that right. I hate the awd

Customer :

I would take it out if i knew step by step LOL

Customer :

I do all of my own stuff. Just this one is a pain. Wife loves the SUV

kalamykid :

If you have not pulled one you are best to leave it to a trans shop. i will not even pull the awd out of the front wheel drive gms

Customer :

could I drop the pan and test the om's on the



Transmission Solenoid?


kalamykid :

The solenoids are behind the side pan not the bottom pan

Customer :

We had that issue on our Saturn

Customer :

what?

Customer :

that sucks

kalamykid :

sorry

Customer :

could it be the 4th gear clutch pack then

kalamykid :

You have to almost drop the trans to get to the solenoids

kalamykid :

that is what i amthinking

Customer :

you would think it would still go into 4th but slip

Customer :

but it dont even do that

kalamykid :

What i think has happened is the 4th gear clutch hup has stripped or broken off

Customer :

thats I think it the solenoids

Customer :

hmm

kalamykid :

Did a light bulb go on

Customer :

and it will still shift fine in the rest of gears?

Customer :

most trans use more than one clutch pack per gear

kalamykid :

If it does not drive you crazy not going into od then i would just drive it till something eles goes wrong with it

Customer :

yea we have

kalamykid :

True but i have had alot of trouble with the clutch hubs stripping off

Customer :

we dont drive it to work. Its just nice to haul the kids in. Lost of room

Customer :

wow

Customer :

If I got a used trans what years would work?

kalamykid :

1 in 15 4l60e transmissions do not have top have a new clutch hub when i rebuild them

Customer :

would the trans go out the bottom or engine need to come out too?

kalamykid :

9 of the 14 have striped out already

Customer :

wow

kalamykid :

The trans can be pulled with the engine left in the van

kalamykid :

i have a " MINI PICK' That i use to hold the engine in so all i have to pull is the trans

Customer :

you think I could tackle it?

Customer :

you dont know me LOL

Customer :

I have a engine lift, trans jack

Customer :

all the tools

kalamykid :

As long as you listen to what i tell you to get you should be able to do the job if you rebuilt your allison

Customer :

hmm

Customer :

Should I rebuild it or buy a used one that could go out later down the road

kalamykid :

HMMMM SPend $900 on a used unit or $500 for parts and rebuild it

kalamykid :

Rebuild it

Customer :

I will know as soon as I open it up right?

kalamykid :

ButI wuld get all my parts from www.transtar1.com

kalamykid :

You will have to pull the chanel plate off, pull the od clutches and slide the clutch hub out and look at the spline at the base of the hub and see if the spline oes all the way to the tip if the hub

Customer :

This is a 4T65E right

kalamykid :

If there is 1/4 inch of no spline at the tip then the hub is garbage

kalamykid :

yes it should be a 65e

Customer :

diffrent if it's AWD?

kalamykid :

no same hub

Customer :

K

Customer :

Is that it then

kalamykid :

The non awd is the same trans as the awd gust has a differant nose on the passanger side axle housing

Customer :

K

kalamykid :

You will want to get a trans go shift kit to install in this trasn when you decide to rebuild it. The kit is great and willmake the rebuild last much longer and you will love the way the trans performs after wards

Customer :

290.00 for the kit

kalamykid :

And no it is not like the B&M shift kits for a 350

Customer :

I know I got a Full Trans go in the Allison

kalamykid :

You need to replace the converter too.

Customer :

K

Customer :

another 100

kalamykid :

atsg has a great book for this trans and is a must "even for a vet" to have handy for small details like torque specs

kalamykid :

the book is $20.00

Customer :

cool thanks

kalamykid :

As i said $500 for a rebiuld is not bad

kalamykid :

you have to add trans fluid to that to and a new band

Customer :

nope not if it's right when it's done

kalamykid :

Pkus a clutch hub

kalamykid :

With a trans go kit and good parts it is well worth the time and money. A good rebuilt unit will save all the mony you spend in gas miage savings

Customer :

yea it suck on gas

kalamykid :

LOL

Customer :

So now how do you get paid?

kalamykid :

just hit the accept button

kalamykid :

or are you asking what percentage do i get?

Customer :

%?

kalamykid :

the question is worth $16 and i get half of that

Customer :

Cool Thanks man

kalamykid, Shop Owner/ Tech
Category: Buick
Satisfied Customers: 3364
Experience: I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q
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kalamykid
kalamykid
Buick Mechanic
3364 Satisfied Customers
I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q