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GM recalls select Tahoes, Yukons, Escalades for rear driveshaft issue

GM is recalling a number of its full-size SUVs due to an issue with the rear driveshaft assembly that could ultimately result in driveshaft failure. The actual number of total vehicles involved in the recall is small at just 1,789, but it’s spread out across the entire 2021 model year full-size GM vehicle lineup. That means a small number of every model is being recalled, including the Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL and the Cadillac Escalade and Escalade ESV. GM traced the issue back to certain driveshaft assemblies with ball bearings that were not properly heat treated. If theyÂ’re not properly heat treated, GM says that the balls may deform over time, causing noise and vibration. Continue to drive in this condition, and GM says the affected joint in the driveshaft assembly could seize, causing loss of drive power. However, the problem wonÂ’t present itself all at once, as GM says there will be a gradual increase of noises and vibrations before total failure. For those few owners with affected vehicles, GM says that it will replace the left and right rear driveshaft assemblies with properly-built units. Per usual with recalls, this will be done at your local dealership at no cost to the owner. If you have one of the recalled SUVs, expect to be notified mid-March. Related video:

2021 Cadillac CT5 adorned with Diamond Sky Special Edition Package

Among the changes due to appear on the 2021 Cadillac CT5 will be an exclusive Diamond Sky Special Edition Package. We don't have photos of the design theme yet, but Cadillac Society reports that the heaven-hued composition will only be available on the Premium Luxury trim. It starts with Diamond Sky Metallic paint that could provide perfect contrast for the Dark Sky Metallic offered on the GMC Sierra 1500. The CT5 goes all-in with the exterior color, dressing the rocker moldings and rear diffuser in Diamond Sky Metallic, and sitting on 19-inch wheels with a Diamond Cut/Midnight Silver finish. Tucked behind the wheels, buyers will find blue Brembo V Performance brake calipers. And having decided that standard taillamps will detract from the effect, for the first time on a non-V and non-V Sport Cadillac, the special edition CT5 will get clear taillights with a gray-tinted outer lens. The interior fabric comes in Sky Cool Gray with a Diamond Fall seat perforation pattern, offset with Jet Black accents, Galaxy Wood trim, and alloy pedals.  In typical Cadillac fashion, getting the Diamond Sky Special Edition Package will necessitate ordering another package when ordering opens next year. The required Climate Package bundles heated and ventilated driver and front passenger seats and an automatic heated steering wheel, and costs $1,090 in 2020. Elsewhere for the CT5 and the CT4, the next model year delivers a 12-inch customizable digital gauge cluster, plus the option of Super Cruise. Some of the changes already outlined for the 2021 CT5-V are likely headed to the CT5, so in the case of Super Cruise, for instance, checking that option could get real pricey, requiring the $1,300 Driver Awareness Plus Package as well as either the $8,330 Platinum Package or $1,950 Driver Assist Package.  Related Video:    

GM will likely build PHEV batteries in China soon

It's a big week for batteries. Friday, Tesla will hold a big event at its Gigafactory in Reno, NV. But even in Michigan, there are things happening on the electrified automotive front. This was proven when GM invited journalists to its Brownstown Battery Assembly Plant today, highlighting the six different battery packs it makes for nine vehicles around the world (plus a tenth, coming to Asia, that has not yet been announced). During our tour, we learned a few interesting tidbits that we thought readers would like to hear: The Cadillac CT6 plug-in hybrid launches in China this fall before coming to the US next year. GM builds the battery packs in Michigan and ships them to China for final assembly in the PHEV. For now, this is all fine for GM to qualify for China's incentives for building green cars in the country. But, as Bill Wallace, GM's director of global battery systems, told AutoblogGreen, this could change thanks to the country's 'Made in China 2025' plan. The situation is "evolving," he said, and it's a safe assumption that GM will need to build packs in China some day. For the CT6 PHEVs that will be sold in the US, the batteries will make a round trip, since GM will only build the plug-in version in China. As for the range of the CT6 PHEV, that hasn't been announced, but since China offers incentives for vehicles that get at least 50 kilometers (31 miles), that's a likely target (the US range (UPDATE: GM did announce an expected range for the CT6 PHEV in the US at the LA Auto Show last fall, saying it would "travel approximately 30 miles on a full electric charge"). The battery pack in the CT6 is also a clunky box-type thing, totally unlike the near-elegant T-shape used in the Volt. This despite the fact that the guts of the two packs are similar. Both have 192 li-ion cells and weigh almost the same, but GM tuned the CT6 pack for acceleration instead of range, the way it did with the Volt's pack. Still, the main reason the packs are different is because the CT6 is a rear-wheel drive vehicle, and the tunnel that the Volt's pack uses is occupied by the driveshaft. Despite the highly touted second-gen Chevy Volt going on sale last year, GM still has the capacity to build battery packs for the old, first-gen model. This is because the company is legally required to be able to provide replacement packs for warrantied vehicles (for up to 10 years), and the second-gen packs don't fit into the first-gen vehicles.