Engine Runs Great But Has Common Head Gasket Leak And Associated Coolant Loss on 2040-cars

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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 recalls 55,000 trucks, SUVs for separating axles, fuel pump failures

General Motors issued four separate recalls covering eight of its truck and SUV models for issues related to fuel pump and half-shaft failure. In total, the four campaigns include more than 55,000 vehicles spread out over three brands and six model years, but they've sorted themselves neatly into two categories. Let's dive in.  Axle separation Four models are being recalled for potential axle separation: The 2023 Cadillac XT5, 2023 GMC Acadia, 2023 Chevy Blazer and 2023 Chevy Traverse. The number of units affected is incredibly small (10 units each times two recalls, for a total potential population of just 20 cars). In each case, a small number left the factory with half-shaft assemblies that may have been missing the retention rings that keep them in place, possibly allowing the axles to separate or eject from the transmission. In the case of the XT5 and Acadia, it's the right-side axle assembly; Chevy dealers, however, will have to check the left side.  Fuel pump failure Again, we have multiple vehicles being recalled for similar issues, but in this case they're a bit more distinct. The first of these recalls covers the 2021-2022 Chevy Equinox and 2022 GMC Terrain. GM says a supplier-initiated change may have led to fuel pumps shipping with inadequate clearances to allow for the prescribed flow of fuel, meaning the pump could starve the engine. Customers experiencing the issue may see a check engine light and experience engine hesitation. In some cases, the cars may not start at all. Chevy and GMC will replace the units in question with correctly specified pumps.  The second recall covers a fairly specific cross-section of GM's HD truck lines. 2017-2019 Silverado and Sierra HD trucks sold with the diesel engine and a dual-tank configuration may have shipped with a rear fuel pump that is susceptible to fouling by debris, preventing fuel from properly transferring to the front tank, or, in extreme cases, resulting in a collapse of the rear tank. This issue can lead to inaccurate/erratic fuel tank readings, engine hesitation, a check-engine light or failure to start.  In both cases, GM will inspect and replace faulty units free of charge for customers. Expect notifications to be delivered by March.  Related video: Recalls Cadillac Chevrolet GMC Ownership Safety Truck SUV

GM recalls 3.6 million vehicles for airbag-software problems

The Basics: General Motors is recalling 3.64 million vehicles across its lineup for an airbag-related issue. The recall covers the 2014-2015 Buick LaCrosse, Chevrolet SS, and Spark EV; 2014-2017 Chevrolet Corvette, Trax, Caprice PPV, Silverado 1500, Buick Encore, and GMC Sierra 1500; and 2015-2017 Chevrolet Tahoe, Suburban, Silverado HD, GMC Yukon, Yukon XL, Sierra HD, Cadillac Escalade, and Escalade ESV. The Problem: Affected vehicles have a sensing and diagnostic module that controls the airbags and seat-belt pretensioners. The software it uses has a defect that can prompt the module to run a diagnostic test under specific driving conditions, which will also deactivate the front airbags and pretensioners. This means that it would be possible for those safety systems to not activate in a crash, potentially leading to injury or death. Injuries/Deaths: General Motors began an investigation that led to the recall after a 2014 Silverado was involved in a crash in which the airbags did not deploy. No information was given as to injuries or deaths. The Fix: Owners can bring their vehicles to a local General Motors dealer where a software update will be installed to fix the issue. The fix will be free of charge. If you own one: General Motors will contact owners of affected cars, and owners can check whether their vehicles are affected by visiting entering their vehicle identification numbers at either the GM Owner Center website or the NHTSA website. Owners can then schedule a time to have the update installed. Related Video: