"Is the Tahoe 4.8 i reliable, and what should you check?"
When buying a used Chevrolet Tahoe 4.8 i 2009 (1st generation), the most commonly reported issue is: Water pump and overheating. Also, ignition coils and misfires are frequently reported.
Engine: LY2
LY2 · 4.8 i · Used in this car from 2007-2009
Known engine issues
Overheating due to radiator and water pump issuesMonitor the condition of the radiator and water pump, as there are many problems from overheating.
Camshaft bearing wear from cheap oilUsing cheap oil often leads to wear of camshaft bearings.
Throttle and fuel pump failure from bad fuelLow-quality fuel quickly contaminates the throttle and causes fuel pump failure.
+2 more issues on the engine detail page
Known issues and risks
Listed from most frequently reported, each with its source.
Water pump and overheating
Often reported
The water pump on the 4.8L tends to develop leaks or bearing noise as mileage increases, and in some cases can compromise the cooling circuit, causing overheating.
Cooling
Ignition coils and misfires
Often reported
Many users report ignition coil failures and related misfire issues on the V8 4.8 engine. Typical symptoms include the check engine light coming on, rough idle, power loss, and increased fuel consumption. Coils and wires can deteriorate over time, especially on high-mileage vehicles.
Engine Bay
Broken exhaust manifold bolts
Often reported
On GM LS family engines (including the 4.8L/5.3L/6.0L in Tahoe/Yukon GMT900), exhaust manifold bolts or studs often break or seize in the head, making removal expensive and complicated.
Exhaust Emissions
Fuel pump/module and injectors
Often reported
Some 4.8L units report fuel system issues: in-tank pump, control module, and injectors can fail; symptoms include misfires, hard starting, and fuel pressure drops.
Fuel System
Chevrolet Tahoe 4.8 i technical specs
Chevrolet Tahoe 4.8 i (2009): boot 479 L; fuel use şehir 14.7 l/100 km · şehir dışı 10.7 l/100 km.
Boot capacity
479 L
Fuel consumption
şehir 14.7 l/100 km · şehir dışı 10.7 l/100 km
Tire size
265/70 R17
Fuel tank
98 L
Dimensions (L×W×H)
5130 × 2007 × 1955 mm
Same trim, different year
2009
Frequently asked questions
What should I look for when buying a Chevrolet Tahoe 4.8 i?+
When buying a 2009 model 4.8 i, check the service history, test drive, and engine/transmission warnings. The most commonly reported issues are: water pump and overheating; ignition coils and misfires; broken exhaust manifold bolts.
What are the chronic problems of the Chevrolet Tahoe 4.8 i?+
The most commonly reported issues are: water pump and overheating; ignition coils and misfires; broken exhaust manifold bolts.
Is the Chevrolet Tahoe 4.8 i reliable?+
Instead of a simple yes or no, it's best to evaluate the proven pros and cons together. This page lists 4 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database; the source vehicle and target vehicle are verified for brand, fuel, engine, and generation compatibility. Topics with insufficient evidence are not shown.
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.
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