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Big Port Jimmy 6 · 02-07-2011, 11:55 PM

See if the PCV is the updated style. The new one has a small hole in it 1/8th or smaller. Look up LS1 tech and look a catch cans
tsb 1
Higher Than Expected Engine Oil Consumption (Replace PCV Valve) #01-06-01-029
Higher than Expected Engine Oil Consumption (Replace PCV Valve)
1999-2002 Chevrolet and GMC C/K Models

2002 Cadillac Escalade

with 5.3L or 6.0L Engine (VINs T, N, U - RPOs LM7, LQ9, LQ4)

Condition
Some customers may comment on higher than expected engine oil consumption. They may further comment on consumption in the range of 2,000 miles (3,200 km) or less per quart (0.946 liter) of oil under normal driving conditions.

Cause
The condition may be due to the PCV Valve flow rate under certain engine operating conditions.

Correction
Verify that the oil consumption is not the result of an oil leak or other engine concern.
Dealer should perform an oil consumption test. The vehicle should have accumulated over 4,000 miles (6,450 km) before establishing the oil consumption rate. Reference Service Bulletin #01-06-01-011, Information on Engine Oil Consumption Guideline, for details.
Remove the PCV Valve and inspect the hose going to the intake manifold for signs of excessive oil being present.
If excessive oil is present in the PCV hose, replace the PCV Valve Type 948C (2) with a new-style fixed orifice PCV Valve Type CV2001-C (1). See Fig. 1 - PCV Valve Identification.
FIGURE Figure 1 -- PCV Valve Identification(c)

(1) New style fixed orifice PCV Valve Type CV2001-C
(2) Spring and plunger style PCV Valve Type 948-C

Important
Do not install the new style fixed orifice PCV Valve on vehicles equipped with the 4.8L V8 Engine (RPO LR4). Use of this orifice on the 4.8L V8 engine may affect engine idle quality and engine RPM control.

Important
The new style fixed orifice PCV Valve contains no moving parts, and does not rattle when shaken.

If the vehicle has an orifice style PCV Valve, investigate other causes for high oil consumption.

Parts Information
Part Number
Description
Qty

12572717
Valve, PCV Type CV2001-C
1

Parts are currently available from GMSPO.

02-07-2011, 11:55 PM	#4
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: Motor smokes...any ideas? See if the PCV is the updated style. The new one has a small hole in it 1/8th or smaller. Look up LS1 tech and look a catch cans tsb 1 Higher Than Expected Engine Oil Consumption (Replace PCV Valve) #01-06-01-029 Higher than Expected Engine Oil Consumption (Replace PCV Valve) 1999-2002 Chevrolet and GMC C/K Models 2002 Cadillac Escalade with 5.3L or 6.0L Engine (VINs T, N, U - RPOs LM7, LQ9, LQ4) Condition Some customers may comment on higher than expected engine oil consumption. They may further comment on consumption in the range of 2,000 miles (3,200 km) or less per quart (0.946 liter) of oil under normal driving conditions. Cause The condition may be due to the PCV Valve flow rate under certain engine operating conditions. Correction Verify that the oil consumption is not the result of an oil leak or other engine concern. Dealer should perform an oil consumption test. The vehicle should have accumulated over 4,000 miles (6,450 km) before establishing the oil consumption rate. Reference Service Bulletin #01-06-01-011, Information on Engine Oil Consumption Guideline, for details. Remove the PCV Valve and inspect the hose going to the intake manifold for signs of excessive oil being present. If excessive oil is present in the PCV hose, replace the PCV Valve Type 948C (2) with a new-style fixed orifice PCV Valve Type CV2001-C (1). See Fig. 1 - PCV Valve Identification. FIGURE Figure 1 -- PCV Valve Identification(c) (1) New style fixed orifice PCV Valve Type CV2001-C (2) Spring and plunger style PCV Valve Type 948-C Important Do not install the new style fixed orifice PCV Valve on vehicles equipped with the 4.8L V8 Engine (RPO LR4). Use of this orifice on the 4.8L V8 engine may affect engine idle quality and engine RPM control. Important The new style fixed orifice PCV Valve contains no moving parts, and does not rattle when shaken. If the vehicle has an orifice style PCV Valve, investigate other causes for high oil consumption. Parts Information Part Number Description Qty 12572717 Valve, PCV Type CV2001-C 1 Parts are currently available from GMSPO. __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.