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2008 Buick Enclave CXL 3.6L Engine
Posted to GM Engine on 3/10/2015 18 Replies

Hello Members. I towed this one in off the road as a "Stalled, cranks, but won't restart". When I tried to start it on the road it didn't sound right when it cranked, almost like the cams were out of time. We got it in the shop, recharged the battery, checked codes: P0011, P0014, P0021 were back, and decided to test compression. Front bank was 30, 60, 90 psi. Rear bank: 0, 45, and 60. Uh oh.

Started looking over the rest of the engine and discovered that the oil hadn't been changed [by us] for about 11,000 miles. Drained the oil and got out about a quart of black stuff that might have been oil once. Refilled with clean oil and attempted to start engine again but after a short bit of cranking it was evident that nothing was improving. If you look just right in the oil filler hole you can see the front cam turning but obviously something bad has happened.

Can the timing chains on this motor jump somehow? I suspect that even though the low oil pressure light didn't come on that it was starved for lubrication and something finally had to give. I strongly suspect that this motor is done for but any ideas or thoughts you might offer would be greatly appreciated!

Related Repair History
11,000 miles ago it was in for an oil change and had the following codes in history. P0011, P0014, P0021: All related to intake and exhaust cam sensor performance issues. Codes had not returned until vehicle was towed back in.

Updated on 3/10/2015
Oops! Mileage should have read 126,334 miles. My bad.

other Test Results
Compression test - 0 psi lowest, 90 psi highest
FIX posted 3/11/2015

Dale from North Dakota

18 Replies Received (View Replies)

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car Vehicle Data

2008 Buick Enclave CXL

VIN 5GAEV23798
Engine3.6 L / 6 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
ConditionsLow/No Compression