Trany would slip then suddenly bang into gear,actually shaking the car.Mainly transitioning from going downhill then making your way uphill.Almost like the trasmission did not know the gear it was suppose to be in then catches. No trouble found. Dealer reported torque converter fluid seal was torn and leaking. A side note, I park in a garage and noticed no fluid leaks on the floor. Dealer removed some suspension, along with transmission. Replace seal and cleaned underside of vehicle.
While slowing to a stop, there was a giant thunk sound and a jolt like I was rear ended. Stabili-trac and traction control went off-line and transmissionwent out of gear and would not re-engage. Dealer said problem was open draft ssensor The shifting is very harsh in lower gears, especially between 1st and 2nd and when the transmission is warm. Dealer said it is normal, but the loaner Acadia they gave me shifted so much better it's like it wasn't even the same transmission
According to the dealer, a hose had separated and was leaking transmission fluid.
On incline truck struggling. Felt like driving on rough road
Originally told dealer about a "shudder" under load last oil change. They couldn't replicate. It got worse and after taking it to a local shop, found out it was transmission and not engine. Dealer fixed under warrenty (torque converter).
Transmission module was replaced During trip for Trans module replacement, Extended warranty repair was made to the trans for the broken 35R clutch wave plate inside the transmission. Service tech preformed stating abnormal wear
replace CV axle (driver's side)
I took the car in for service because the check engine light came on again. Car had gone haywire again in the snow when I had to floor the gas to maintain forward motion going up hill in snow. Complete new transmission required.
Engine shudder under load and low RPM. CarMax replaced transmission under their warranty. GMC warranty had expired. I don't think this was the root cause.
3/5/R Wave Plate shattered. Had to rebuild transmission.
My gear shift was making a very loud noise and would not move smoothly when put into any gear. The symbols such as "R" for reverse and "P" for park would not light up. The gear shift was replaced but symbols still do not light up as they did when new
3.5.R wave plate failure. Cleaned metal particles from transmission. Replaced all clutch friction plates and damaged steel clutch plates (3.5.R) and waved clutch plate, input housing, sun gear and 2/6 backing plate.
Diagnostic result from CEL and onStar - transmission TCM needs replacement.
Car in limp mode, but next day fine. Drove for 10k miles before problem appeared again.
CEL again, TCM needs replacement,
With tranmission open found 3-5-r wave plate broken again.
Rebuild or re-manufacture?
Decided to purchase reman trans with 3yr/500k mile warranty.
Transmission repaired for third time
3-5-R Wave Plate broke. Transmission disassembled and repaired.
Transmission would intermittently not shift out of 1st gear. Transmission valve body assembly replaced.
Acadia was taken to the dealer for an oil change. Dealer saw that transmission was leaking. Dealer replaced transmission seal.
Replaced noisy CV axle shaft.
Tranny made strange noise when starting.
Shifter in center console completly failed, required entirely new interior console.
CV Halfshaft boot ruptured.
transmission shifting rough and check engine light on periodically. Was going to take too long 5 days to repair so I picked it up and scheduled the repair for a different time.
power and shifting rough and sluggish, particularly around 40 mph and passing on the highway.
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Transmission wave plate failure
3-5 reverse clutch plate disintegrated on the family summer trip 100 miles from my house.
Replaced transmission cooler.
Right axle shaft was replaced
Left axle shaft was replaced
Transmission case was found to be leaking fluid. All seals were replaced while the engine was pulled. Transmission wave plates were inspected while engine and trans were pulled. Wave plates replaced with updated parts.
Highway driving, dash indicated transmission was overheating, called OnStar, 'diagnostic' determined minor. Next day transmission was slipping a lot, bad smell, OnStar recommended going to nearest dealer immediately. dealer rebuilt tranny.
Transmission not shifting properly. Reverse completely gone.
Transmission failure resulting from a waveplate failure and extensive damage. This was indicated by check engine light, and complete loss of power.
Transmission lugging, erractic shifting, hesitation upon acceleration, rough driving, poor gas mileage.
Replaced leaking transmission hoses
Leaking automatic transmission cooler hose. Replaced both hoses even though 2nd hose was not leaking.
Transmission went out completely, no forward or reverse. Towed to GM dealer and rebuilt, took 2 weeks to complete. No cost as covered by GM drivetrain warranty.
Transmission front seal leaking, and was replaced.
Found transmission fluid leak. Will repair when working on brakes
Fluid leak repaired
Transmission blew and cracked entire case. Vehicle was towed and entire transmission had to be replaced. GMC picked up most of the tab even though was out of warranty. They said it would have been around $4000.00
Rebuilt transmission due to wave plate failure.
internal transmission problem, replaced a part
Transmission/ECM software flash update.
Drive shaft bolts came out. Dealer will not cover this repair, says someone tried to steal the drive shaft. Which is not possible due to were it is parked.
Also all wheel drive electrical component failed.
lost connection with rear transfer case in all wheel drive, faulty wiring
trans went out with 89,000 miles on it. Dealer replaced needed parts and returned to me repaired under powertrain warranty.
Transmisson Command Module went bad.
transaxle (front) replacement
Transmission fluid dripping from bottom of the vehicle. Dealer thought it was a seal. When transmission was dropped, dealer determined fault to be the Torque Converter. Replace the converter. Repair took 7 days.
Front wheels shaking over 50 mph, even after new tires and alignments. Problem was with the AWD- replaced the AWD- has to ship parts from Canada, by truck as too heavy to air freight..
After 50 or 60 miles on Hwy, Shift hesitation between 5 & 6th gear after downshifting for a grade/hill at highway speed.
Leaking fuid transfer case
Car suddenly not able to be put into reverse. Towed and serviced.
The car was repaired successfully the 3rd time and it turned out to be the TCU (Transmission Control Unit).
Transmission failed with 4th, 5th and 6th gears not enabling due to a failed "wave plate".
Check Engine Light went on with intermittent 'slips' in the transmission. Hit the OnStar button and they said drive it in immediately to a GM Dealer. The Dealer replaced additional tranny parts beyond the May transmission repair.
3-5-R Wave Plate failure yet again. This is at least the 4th time this particular part has been replaced and the transmission has been rebuilt. The dealer was great & arranged for GM to cover even though it was out of warranty.
Hesitation in acceleration coming out of turn.
Vibration in steering wheel.
Drivers seat grinding when moving forward or reverse.
Acceleration hesitation coming out of a turn.
Sunroof shade rattles.