2023 GMC Sierra 2500HD SLE 6.6L Gas 4x4
Unverified
All photo credits
- Photo: 2020 GMC Sierra 2500 Denali HD, Duramax 6.6L, front 2.1.20 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2023 GMC Sierra 2500 Denali HD Ultimate in Titanium Rush Metallic, front right by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2020 GMC Sierra 2500 Denali HD, Duramax 6.6L, rear 2.1.20 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2023 GMC Sierra 2500 Denali HD Ultimate in Titanium Rush Metallic, rear left by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons
The 2023 GMC Sierra 2500HD SLE 6.6L Gas 4x4 is a 401-hp 6.6-liter with a 6-speed automatic; electronically controlled and four-wheel drive.
It makes 401 horsepower and 464 lb-ft of torque.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Pickup |
| Powertrain | Gas |
| Price | |
| Destination Charge | $1,895 |
| Engine | |
| Engine Type | 6.6L V-8 gasoline / E85 FlexFuel; cast-iron block with nodular iron main caps, cast aluminum heads |
| Displacement | 6.6 L |
| Horsepower | 401 hp |
| Torque | 464 lb-ft |
| Valvetrain | OHV, two valves per cylinder, variable valve timing (VVT) |
| Bore and Stroke | 103.25 x 98.0 |
| Compression Ratio | 10.8:1 |
| Injection Type | Direct fuel injection |
| Drivetrain | |
| Drive Type | 4WD |
| Transmission | |
| Transmission | 6-speed automatic (Hydra-Matic 6L90); electronically controlled |
| 1st Gear | 4.03 |
| 2nd Gear | 2.36 |
| 3rd Gear | 1.53 |
| 4th Gear | 1.15 |
| 5th Gear | 0.85 |
| 6th Gear | 0.67 |
| Reverse | 3.06 |
| Final Drive | 3.73 |
| Fuel Economy | |
| Recommended Fuel | Unleaded regular (87 octane) or E85 flex-fuel |
| Suspension | |
| Front Suspension | Short long arm (SLA) independent front suspension with torsion bars |
| Rear Suspension | Semi-elliptic three-stage multi-leaf spring, solid axle |
| Brakes | |
| Front Brake Calipers | Hydraulic power-assisted Hydroboost, ABS, StabiliTrak |
| Front Brake Disc | 14 x 1.6 in (355 x 40 mm) vented disc |
| Rear Brake Disc | 14.1 x 1.3 in (360 x 34 mm) disc |
Similar cars
Rivals to the 2023 GMC Sierra 2500HD SLE 6.6L Gas 4x4 with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Tested, but no star ratings were published (2023 GMC Sierra 2500 PU/CC 4WD).
Recalls
1 recall on file with NHTSA for the 2023 GMC SIERRA 2500. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Feb 1, 2024 · LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.
Consequence: An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.
Remedy: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N232426400.
NHTSA campaign 24V060000
33 owner complaints to NHTSA for the 2023 GMC SIERRA 2500
Owner Complaints
33 owner complaints filed with NHTSA for the 2023 GMC SIERRA 2500 (1 mention a crash, 1 an injury). See all on nhtsa.gov
| Power Train | 20 |
| Electrical System | 6 |
| Engine | 3 |
| Service Brakes | 3 |
| Tires | 3 |
| Unknown Or Other | 2 |
Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2023 GMC SIERRA 2500. US-market vehicles only; data cached for up to 7 days.