2024 Gmc Sierra 3500 Pro on 2040-cars

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GM opens official investigation into C8 Corvette transmission leaks

In March 2020, a month after Chevrolet began customer deliveries of the 2020 C8 Corvette, a GM dealer technician created a Reddit thread about a leaking gearbox in a Corvette with 32 miles. That car hadn't even been sold yet. Since then, as a search of "C8 Corvette transmission leak" shows, it's been tales of woe for some owners. Something in the Tremec TR-9080 transaxle in the back of the mid-engined Corvette doesn't work as it should, the fault able to cause codes that the transmission needs service, or that the driver needs to shift to park. In some cases, the battery would die because of follow-on issues after the initial transmission code, that code preventing the car from powering down. As Autoevolution reports, GM filed paperwork with the National Highway Traffic Safety Administration in August to look into what's going on. Between forum threads and GM's investigation document, there are several issues mentioned. The most common appears to be the dual-clutch transmission leaking fluid due to gasket failures like the one suffered by one owner at 858 miles, and another for an owner currently enduring a second leaking transmission. The Midengined Corvette Forum reported that Chevy engineers redesigned the TR-9080 pan, fitting Corvettes with the new unit at some point in the 2021 model year. The original pan was stamped steel unit affixed to the engine with two studs and 13 bolts, plus "reinforcement plates." The updated pan is said to be a cast aluminum unit affixed with two studs and 17 bolts, omits the reinforcement plates, and gets a new machined new groove around its edge to seat the gasket seal. The GM paperwork now at the NHTSA mentions a P1789 code, and says one reason for it could be "debris on the park position sensor magnet causing an incorrect position reading to the TCM." This might be caused by another issue mentioned in forums, which is clogged transmission filters. GM gives instructions for returning transmission filters to the company, and a poster on one forum said the Corvette tech at the dealer where he bought his Corvette told him the automaker "requires every used transmission filter to be returned to GM."  Whatever's going on, the problems haven't stopped, and they go beyond the P1789 code. Over the weekend, a 2022 Corvette owner posted on Corvette Forums that he got a check engine light on his car after just 850 miles.

2021 GMC Canyon AT4 Off-Road Performance Edition is ready to hit the trail

GMC introduced a more capable Canyon AT4 named Off-Road Performance Edition that gains modifications like skid plates and a beefier suspension. It can venture further off the beaten path, but it won't get there faster. Based on the AT4, which is already better suited to venturing into the woods than the standard Canyon, the Off-Road Performance Edition gains a taller suspension and loses its sizeable front air dam to offer a 30-degree approach angle. GMC knows adventurers will be tempted to put that figure to the test, so it also added skid plates made with 5/32-inch aluminum to protect the radiator, the front differential, the steering gear, and the oil pan. Full-length rock rails on both sides shield the rocker panels from expensive encounters with boulders and other obstacles. Finally, the Off-Road Performance Edition stands out from the AT4 with specific 17-inch wheels painted in gloss black, black AT4 logos, and black exhaust tips. 31-inch Goodyear Wrangler tires come standard. Changes in the cabin are limited to floor liners. Out back, the cargo box receives a spray-in liner. Don't look for Ram 1500 TRX-like performance, because it doesn't sound like GMC made any major mechanical modifications to the Off-Road Performance Edition. Power comes from a 3.6-liter V6 that sends 308 horsepower and 275 pound-feet of torque to the four wheels via an eight-speed automatic transmission and an automatic locking rear differential provided by Eaton. AT4 buyers can order a 2.8-liter Duramax turbodiesel four-cylinder with 181 horsepower and a stout 369 pound-feet of torque on tap for an additional $4,375, but there's no word yet on whether this fuel-saving engine will be available on the Off-Road Performance Edition, too. GMC's 2021 Canyon AT4 Off-Road Performance Edition will go on sale later in 2020, though pricing information hasn't been announced yet. For context, the standard AT4 costs $39,395 in its most affordable configuration.  

2023 GMC Sierra prices up, start at $38,995 for Sierra Pro Regular Cab

It was only 90 days ago that GM Authority, typically a reliable source in these matters, reported on pricing for the 2023 GMC Sierra lineup before official numbers were released. Those early figures were apparently just placeholders. Now that GMC's uploaded the full 2023 configurator for the 2023 Sierra, not only are MSRPs higher except on the base trim, the destination charge has risen from $1,795 to $1,895. The sticker prices including destination and their changes from those late August sums are: Sierra Pro Regular Cab Standard Box 2WD Turbo 2.7L I4 L3B $38,995 ($1,025 less) SLE Double Cab Std Box 2WD Turbo 2.7L I4 L3B $52,095 ($1,100) Elevation Double Cab 2WD Turbo 2.7L I4 L3B $53,795 ($1,200) SLT Crew Cab Short Box 2WD 5.3L V8 L84 $57,795 ($1,300) AT4 Crew Cab Short Box 4WD Turbo-diesel 3.0L I6 LZ0 $68,595 ($1,495) AT4X Crew Cab Short Box 4WD 6.2L V8 L87 $83,595 ($3,395) Denali Crew Cab Short Box 2WD 5.3L V8 L84 $67,595 ($1,095) Denali Ultimate Crew Cab Short Box 4WD Turbo-diesel 3.0L I6 LZ0 $82,940 ($745) The Sierra's price bumps ranging from $745 to $3,395 come in tandem with the prices of the 2023 Chevrolet Silverado going up anywhere from $800 to $1,800. The $3,395 MSRP boost on the Sierra AT4X skews the price curve because of extra equipment. GMA reported in July that the standard AT4X would inherit parts from the Sierra ATVX AEV created in collaboration with American Expedition Vehicles. That's what's happened. A revised grille with gloss black and dark nickel trim, AEV front and rear bumpers with increased approach and departure angles, a hot-stamped hardened steel front skid plate inflate the cost and give the ATX4 a little more capability off-road. The equipment list also narrows the gap from the regular AT4X to the AT4X AEV, the latter going just a bit further with four more skid plates, AEV's Salta wheels, and a smattering of black trim around the body. We're still waiting for official pricing on the AT4X AEV. The image above shows shows how similar both trucks will look when the AEV arrives, with the standard AT4X on the left, the AT4X AEV on the right. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.