Recommended tire pressure for 2015 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2016 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2017 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2018 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2019 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2020 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. Recommended tire pressure for 2021 Chevrolet Trax is 35 psi for front tires and 35 psi for rear tires. The link below has very insightful pictures and posts on that issue, it appears related to road treatments in cold regions.Recommended tire pressure for 2022 Chevrolet Trax is psi for front tires and psi for rear tires. With standard wheels, the spider (pinion/planet) rotations may be extremely less frequent (corning, etc) which gives time for the assembly to cool off.Īnother possible cause may be related to a known issue of corrosion on the rear differential housing. It may be the rear differential just destroyed itself because of a lack of fluid and the compact spare just resulted in heat buildup because of constant rotations. With the compact spare on the spider (pinion/planet) gears will start rotating about each shaft and the spider (pinion/planet) gears should change locations on the bevel axle gears. For anyone interested in open differentials the video below from GM in 1937 may help in understanding (around the 7-minute mark it gets to actual auto parts). When a car is traveling straight in an ideal differential the spider (pinion/planet) gears should not be rotating about their individual shafts and the whole spider (pinion/planet) carrier should rotate with the bevel gears connected to each wheel shaft (like a locked differential). This fluid I expect may help in lubrication and heat transfer. I am not sure if this is the reason but a given amount of fluid is required in the differential assembly. This is a puzzle why would a compact spare cause the rear differential to fail?Ĭlick to expand.I just finished shoveling (around the 6th time in the last few days) and could not help but think about this problem while shoveling. I will start reading this one and see if I can track more related to this assembly. On the Trax they do not recommend any towing I am not sure if you made your Trax tow ready etc.Īnyone interested in reading patents US 6,905,008 B2 appears related to the Electromagnetic Clutch in the rear differential assembly. I would still contact gm to hear what they say about running on the compact spare. No one likes to part with money and this time of year may be the worst for that my only concern with the used unit is if it fails again. I am not sure what the cost is to have the unit installed hand waving it appears 2K for a used unit (I guess no warranty, your email above) and around 3K+ for a new unit with a 2-year warranty (you may want to get a price from a gm dealer). This location below listed a 2-year warranty on parts and labor if you use a gm dealer. The part number I have is 42550054 and I was able to find used ones on eBay for around 400 dollars (it can vary a lot) and new ones from around 1500 to 2000 dollars (it can vary a lot even with gm dealers). This got me thinking about if I would replace it with a new unit or a used unit. I checked for any TSB's related to using the compact spare but could not find any. I am not sure why the compact spare would damage the rear differential.Īs page 300 in the owner's manual states, the AWD should become disabled.īecause you are above 60000 miles it appears you are out of the Powertrain Component Warranty, I am not even sure if the rear differential is covered in that warranty. The basic physics of differentials is the wheels can rotate at different speeds (turning etc.) the classic example is a rear-drive car turning 90 degrees etc. Click to expand.Sorry to read about the damaged rear differential the owner's manual does say the compact spare can be used at speeds under 50 miles/hr.ĭo you remember the speed you were driving? the manual does not say why it has an upper-speed limit of 50 miles/hr (safety etc.)
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