Transmission issues had been recognized for each version produced via way of means of Buick, even though a few years have fared higher than others. The issues stated range from transmissions transferring unevenly and lack of transmission fluid to transmission failure. There also are a few different issues stated in Buicks that can be improper for transmission issues, consisting of capacity looseness withinside the throttle strain cable connecting the carburetor to the transmission in numerous fashions. At the time of failure, you can choose a used Buick transmission as a replacement.

Modulator Problems

Buicks with 440T4 / 325 4L transmissions may also show off shortened lives if the connected modulator isn't always maintained. The situation of the modulator can be checked via way of means of pulling the connected vacuum line from its connector to the transmission; fluid withinside the line suggests a terrible modulator. Since modulators manage shift firmness, a terrible modulator can bring about slipping gears.

Accumulator Piston Breaks

Buick's T400 transmissions incorporate a plastic accumulator piston that regularly breaks. These pistons may be changed via way of means aluminum fashions in rebuilt transmissions. When in the right running order, this mechanism regulates engine braking, bearing in mind easy transferring.

Erratic Shifting

The 200C Buick transmissions are acknowledged for an erratic transferring way to brittle plastic connectors preserving the shift points. Bad modulators might also motive this problem. Also, outside sensors at the 4L60E and 4L80E transmissions also are acknowledged to move terribly and motivate erratic transferring.

Other Shifting Problems

The 4L80E transmission is understood for sensor issues. The enter and output pace sensors regularly fail or misfire, inflicting a whole lot of transferring issues—consisting of erratic transferring, transferring slips, difficult or gentle transferring—or may also end transferring entirely. These sensors have to constantly be checked first withinside the occasion of transmission issues with those fashions.

A stretched timing chain

People watch the brand new Car Buick Enclave Avenir after it becomes found out on April 11, 2017, in New York. The Buick Enclave Avenir | KENA BETANCUR/AFP through Getty Images. Another not unusual place trouble with the Enclave is a stretched timing chain. A critical part of each inner combustion engine, the timing chain is stretched across the camshaft and the crankshaft and regulates their turning in order that the engine’s valves open and near at the best time. When the timing chain will become stretched, it’s now not capable of effectively carrying out this feature and might cause expensive repairs. 

All timing chains will finally be put on and want to replace, however, this typically takes place among 150,000 and 200,000 miles. With the Enclave, clients have said a stretched timing chain as early as 40,000 miles. When the timing will become thrown off due to a stretched timing chain, a take a look at engine mild ought to seem at the sprint as soon as the sensors comprehend the trouble. Other symptoms and symptoms to observe out for consist of a damn or vibration sound whilst the engine is running, the engine misfiring or steel shavings determined withinside the oil.

According to Repair Pal, the common rate to restore a stretched timing chain is between $1,703 and $2,051. Although it could simply want a brand new chain slipped into place, the restore fee may be alternatively luxurious due to the severe exertions it calls for to attain the chain, which can consist of taking away the engine or transmission. If a stretched timing chain brought on similar harm to the engine, this will considerably grow the restore fee as well. 

The Buick Enclave additionally has strength steerage issues

Intermittent strength steerage failure is any other not unusual place trouble with the Buick Enclave. Luckily, this one is commonly clean to note and diagnose due to the fact the steerage wheel turns into difficult to show at the same time as driving. Earlier fashions of the Enclave appear to have the maximum strength steerage issues, with the 2009 thru 2011 fashions having the very best variety of said complaints. The common fee of restore for strength steerage issues with the Enclave is $1,seven-hundred and it takes place approximately 79,000 miles into the car’s lifespan. 

Is the Buick Enclave a dependable car?

The maximum not unusual place and severe issues with the Enclave appear to arise basically with the older fashions. 2008 become the primary yr that Buick made the Enclave, so it makes me feel that it's for the version with the maximum said issues. As Buick discovered what to improve, the later fashions have become higher-excellent vehicles. If you’re withinside the marketplace for an Enclave, 2012 and more modern appears to be the exceptional guess for the maximum dependable fashions.