Gm 3 6 Vvt Engine Problems

As far as mainstream gm goes there have been at least four major versions of this engine. I just got a customer satisfaction program letter from gm stating that gm s 3 6 liter v6 the engine used in the camaro saturn outlook lacrosse cadillac cts and several other cars is showing premature wear of the timing chain. Birdie s pro tech duration.

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Timing chains still failing on 3 6 engines with most cars timing chain replacement is regular maintenance but somehow gm is not allowed to ever need a new timing chain.

Gm 3 6 vvt engine problems. Engine joe talks about the hard to find gm 3 6 high feature v6. A quick check of the web turns up that many who own this engine are experiencing troubles all the way up to the engine fragging. Do you want to settle in court the gm engine cases. I won t own any direct injected engine.

Gm 3 6l engine problems. The gm high feature engine also known as the hfv6 and including the 3600 ly7 and derivative lp1 is a family of modern general motors dohc v6 engines the series was introduced in 2004 with the cadillac cts and the holden commodore vz. For 2010 the base engine changed to a 3 0l variable valve timing vvt v6 with 270 hp 201 kw and 224 lb ft 304 n m of torque. At least the car often tells you when it needs a new chain before damage is done.

3 4l manifold gaskets 6 5l d engine blocks 5 3l piston slap 5 3l intake gasket 5 7l intake gasket 3 4l dohc engine failure 7 0l engine failure 5 3l carbon build up 4 1l head gasket failure 2 3l sludge build up but none of those have been settled in court. Birdie s speed shop 63 731 views. How to replace chevrolet 3 6 vvt engine timing chain. After the ly7 the llt version brought direct fuel injection.

Gm is offering to change. The lcs was a version meant for hybrids. The lfx used in the camaro had redesigned heads and an integrated exhaust manifold to reduce engine weight. If you have this gm engine change oil using a quality 5w 30 and change at 5000 mile intervals seem to solve the issue.

Typically the vvt system does not activate until the engine is at higher rpm or is introduced to load bearing situations like driving uphill. 2007 2015 3 6 v6 gm high feature timing chain heads installation guide tips. Why gm 3 0 and 3 6 v6 timing chains fail pete s garage. They have been considered a design flaw for decades.

A 6 speed manual transmission was standard equipment on the second generation cts and gm s 6 speed hydra matic 6l50 automatic transmission was available as an option on all variants. It is a 60 24 valve design with aluminum block and heads and sequential multi port fuel injection most versions feature continuously variable cam phasing. However if the vvt solenoid is malfunctioning it is possible that it will introduce additional engine oil to the vvt gears. I just counted at least 10 in my head.

But if i had a gm 3 6 direct injected engine i d be using rotella 5w 40 oil in it and not worry about the fuel mileage.