Manufacturer communication 01-06-01-029 — 2000 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON) ・ Source reference 2002-03-91

The fixed-orifice PCV valve may be used without matching the throttle body: a correction to the January 2002 article (oil consumption bulletin 01-06-01-029)

Reporter type: Manufacturer

Vehicles as recorded

2000 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON XL) This vehicle's overview →
2001 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON XL) This vehicle's overview →
2002 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON XL) This vehicle's overview →
2000 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON) This vehicle's overview →
2001 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON) This vehicle's overview →
2002 GMC CHEVROLET AND GMC C/K TRUCKS AND 2002 CADILLAC ESCALADES WITH A 5.3L (LM7), OR 6.0L (LQ9/LQ4) ENGINE (YUKON) This vehicle's overview →

What the manufacturer’s document says

01-06-01-029 ・ fault and correction ・ No vehicle named (written by engine)

Applies to

Bulletin 01-06-01-029 was released in December 2001 regarding excessive engine oil consumption in 1999-2002 Chevrolet and GMC C/K Trucks and 2002 Cadillac Escalades with a 5.3L (LM7), or 6.0L (LQ9/LQ4) engine.
the passage
Bulletin 01-06-01-029 was released in December 2001 regarding excessive engine oil consumption in 1999-2002 Chevrolet and GMC C/K Trucks and 2002 Cadillac Escalades with a 5.3L (LM7), or 6.0L (LQ9/LQ4) engine.

Correction

Repair

If engine oil consumption is verified by following the bulletin procedure, a fixed-orifice PCV valve is to be installed.
the passage
If engine oil consumption is verified by following the bulletin procedure, a fixed-orifice PCV valve is to be installed.
You may use the fixed-orifice PCV valve as stipulated in the bulletin without affecting vehicle operation.
the passage
You may use the fixed- orifice PCV valve as stipulated in the bulletin without affecting vehicle operation.

Caution

The article titled "Changes to the Gen III Engine Family Fuel Injection System" in the January 2002 issue of TechLink incorrectly stated that the throttle body and PCV valve must be matched.
the passage
An article titled Changes to the Gen III Engine Family Fuel Injection System in the January 2002 issue of TechLink incorrectly stated that the throttle body and PCV valve must be matched.

Compiled by reading the full text of the document; each point stands on the passage shown. Check the document itself, linked below, before working on a vehicle.

Stated content

Communication summary
Japanese translation not processed yet.
Electronic Fuel Injection Update Bulletin 01-06-01-029 was released in December 2001 regarding excessive engine oil consumption in 1999-2002 Chevrolet and GMC C/K Trucks and 2002 Cadillac Escalades with a 5.3L (LM7), or 6.0L (LQ9/LQ4) engine. If engine oil consumption is verified by following the bulletin procedure, a fixed-orifice PCV valve is to be installed. An article titled Changes to the Gen III Engine Family Fuel Injection System in the January 2002 issue of TechLink incorrectly stated that the throttle body and PCV valve must be matched. You may use the fixed- orifice PCV valve as stipulated in the bulletin without affecting vehicle operation.
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Source

Source: GM TechLink
Source reference: 2002-03-91
Received by source: 2002-03-01
Incident date: Unknown

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