When did they fix the Northstar engine?

In 2004, they finally replaced the notorious bolts. They were swapped with LS6 head bolts which were longer than the original bolts and featured a coarser thread. Due to this modification, the 2005-2011 Northstar engines had fewer gasket issues. In fact, it was no less reliable than other aluminum V8 engines.

What year Northstar engines to avoid?

Cadillac DTS, Buic Lucerne and Cadillac STS were the last cars to use a Northstar engine, but generally it is felt that those models from 2002 onwards do not suffer as much with the head gasket issues that plague earlier models. If you have a model prior to this, however, the chances are your Cadillac could be at risk.

When did GM fix the Northstar?

Despite the use of the Northstar engine in various cars that did well on the market, General Motors stopped producing the Northstar engine in 2011.

Is the Northstar v8 a bad engine?

Despite its 18-year running history, the Northstar engine is susceptible to a lot of problems. The design of the engine is the predominant cause for the majority of these issues. While some have been remedied over the years others are still common even on newer Northstar vehicles.

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How long do Cadillac Northstar engines last?

The Northstar engine is a long-lasting and reliable engine. A properly maintained one can easily last up to 100,000 miles before you need another tuneup related to oil leakage or blown head gaskets. Many people have even seen these engines exceed 200K without any major problems.

Can you BulletProof a Northstar engine?

Our “BulletProof Kit” Contains the best parts to ensure your Northstar repair job is successful and durable. What’s included? With this kit you’re studding both critical areas of the aluminum engine block and you’re also adding the best head gaskets available on the market.

Did Cadillac fix the Northstar engine?

GM ceased production of the Northstar in 2011. … It was replaced by the GM LS small-block OHV engine, used in newer Cadillac V8 models like the CTS-V, marking a step back to a simpler, more reliable pushrod engine design.

What year did Cadillac come out with the Northstar engine?

The first Northstar engine, RPO Code L37, was launched in the 1993 Cadillac Allante roadster and the Cadillac Eldorado. It displaced 4.6 liters and delivered 295 horsepower and 290 pound-feet of torque. Later, the engine was also used in the Buick Lucerne Super.

Do Cadillac STS have a lot of problems?

STS owners have made 29 complaints over 7 model years. Using our PainRank™ system we’ve ranked it 12th in overall reliability out of 22 Cadillac models , with real electrical and engine concerns.

Do all Northstar engines leak oil?

When Does the Oil Start Leaking? We wish we could tell you that your Northstar engine will never leak, but our experience tells us otherwise. There’s no way to avoid this. It’s understood that every Cadillac Northstar 4.6 engine will start leaking oil at some point, regardless of the Cadillac model that you drive.

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What year did Cadillacs stay away from?

Used Cars to Avoid Buying

Model Year(s) to Avoid
Buick Lucerne 2011
Cadillac CT6 2017
Cadillac XT4 2019
Cadillac XTS 2014

Do Northstar engines burn oil?

The “Northstar” engine they used in these cars is known for burning oil. … That suggests that something is wrong deep inside the engine — most likely bad rings. But if you’re burning a quart every 1,000 miles or more, you’re probably better off just trying to keep it from getting worse quickly.

How much is a Northstar engine?

Northstar Performance – New / Remanufactured Northstar Engines. New Northstar Engines for your Cadillac / Aurora / Lucerne: We offer new/remanufactured Northstar engines for the price of $6,995 USD or $8,640 Canadian dollars (Price in effect as of Oct 26/2021).

What causes Northstar head gasket failure?

There are three ways the head gaskets can fail on a Northstar. 1- exhaust gases blow into the cooling system under load, such as when you climb a hill or pass someone. 2-coolant gets into the cylinders and you leave a trail of white smoke behind you. 3- coolant gets in your oil or vice-versa.

How much is a 2003 Cadillac DeVille worth?

The value of a used 2003 Cadillac DeVille ranges from $612 to $2,837, based on vehicle condition, mileage, and options.