Been wainting on this engine that we replaced at work to see if GM was going to call it back or I was going to get it. Just bought it! It came out of a 08 tahoe Hybrid. It's a LFA engine code "5" 6.0 all aluminum with 243 heads VVT and active fuel management. it has stock 10.7:1 comp. replace for misfire on cylinder one. there is a bulletin that says to replace engine with a P0300 and oilly number one cylinder. Some how oil is getting into #1 cylinder. GM doesn't say what the problem is,but to replace with complete new assemble. This will be a great motor, it has 18k on it. I will post it later in the for sale section when I get good pics. :hyper2:
Here's the bulletin:
#PIP4525A: SES Light Blue Exhaust Smoke Misfire Oil Consumption And/Or Fouled Number 1 Spark Plug - Replace Engine - keywords bearing camshaft deposits economy HP2 LFA light miss no P0300 P0301 repeat replace - (Feb 11, 2009)
Models: 2009 Cadillac Escalade Hybrid
2008-2009 Chevrolet Silverado Hybrid, Tahoe Hybrid
2008-2009 GMC Sierra Hybrid, Yukon Hybrid
with 6.0L Engine (RPO LFA)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may complain of an engine misfire, oil consumption, blue exhaust smoke, and/or an SES light. Upon inspection, oil deposits will be found on the #1 spark plug causing cylinder 1 to misfire and set DTCs P0300 and/or P0301. Typically, this will not occur until the vehicle has accumulated at least 8,000 miles. This may be the result of excess oil splashing onto the #1 cylinder wall due to a worn #1 cam bearing. This excess oil may eventually get into the combustion chamber and foul the #1 spark plug causing the engine misfire and SES light.
Recommendation/Instructions:
If the SI diagnosis does not isolate the cause of this concern, inspect the #1 spark plug for excessive oil deposits. If excessive deposits are present, replace the engine assembly. Before ordering a replacement engine, gather the engine unit numbers, generate an engine replacement estimate, and contact the PQC 1-866-654-7654 for pre-authorization as outlined in the latest version of 02-07-30-029.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
