How do I check and replace the PCV valve in my Chevrolet Blazer,S10,GMC Jimmy and Sonoma?

If the engine runs at normal operating temperature, while idling, withdraw the valve (with attached hose) from the rubber grommet on the valve cover. In a V6 engine, PCV valve takes place in a valve cover. Take it out and see if there is any suction and shake it to check for rattles. Put your finger over the tip of the valve. If there is no vacuum at the valve, test a clogged hose, manifold port or valve itself. Replace any plugged or deteriorated hoses. Shut off engine and shake PCV valve; listen for rattle. If it does not rattle, get a new one to replace that which exists currently but doesn't make noise when shaken, and pull it out of end of hose so that you can take note its installed position as well as direction before replacing it again with an identical one To fit a replacement PCV vale, remove it from the end of hose and remember how it has been placed consequently you may have problems with finding appropriate vehicle model year, size for such an item purchased only after comparing previous characteristics with new ones Check for damage on rubber grommet and if need be install a new one. Lastly push another pcv valve and hose into their respective slots inside the valve cover securely.

Genuine Chevrolet Blazer PCV Valve

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14 PCV Valves found

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Chevrolet Blazer Valve,Pcv
Part Number: 6487936
$5.99 MSRP: $8.38
You Save: $2.39 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988 Chevrolet Blazer | 1/2 TON
- 1985-1986 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Valve Assembly, Pcv
Part Number: 12655400
$27.53 MSRP: $51.94
You Save: $24.41 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Replaces: 12637664
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | L 4 DOOR SUV, LT 4 DOOR SUV | 4 Cyl 2.5L
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Chevrolet Blazer Valve Assembly, Pcv
Part Number: 12655399
$19.00 MSRP: $35.84
You Save: $16.84 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Replaces: 12637663
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | L 4 DOOR SUV, LT 4 DOOR SUV | 4 Cyl 2.5L
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Chevrolet Blazer Valve Asm,Pcv
Part Number: 19303069
$3.70 MSRP: $6.72
You Save: $3.02 (45%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Replaces: 06487532, 6487532
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2004 Chevrolet Blazer | 2 DOOR, 4 DOOR | 6 Cyl 4.3L
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Chevrolet Blazer Valve,Pcv
Part Number: 6487779
$9.83 MSRP: $17.64
You Save: $7.81 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1995 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Blazer Valve, Crankcase Depression Regulator
Part Number: 25097699
$85.31 MSRP: $153.02
You Save: $67.71 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel
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Chevrolet Blazer Valve,Pcv
Part Number: 8995284
$12.60
ADD TO CART
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1995 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Blazer Breather Assembly, Air Cleaner & Silencer
Part Number: 6484966
$3.62 MSRP: $6.50
You Save: $2.88 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: BREATHER, Air Cleaner Intake; Breather, Breather Element
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Blazer Valve Assembly, Pcv
Part Number: 12714149
$17.95 MSRP: $33.86
You Save: $15.91 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: PCV Valve
- Replaces: 12673554, 12666420
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 6 Cyl 3.6L
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Chevrolet Blazer Orifice, Pcv Valve
Part Number: 12650731
$9.87 MSRP: $18.62
You Save: $8.75 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: ORIFICE, Engine Crankcase; PCV Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | L 4 DOOR SUV, LT 4 DOOR SUV | 4 Cyl 2.5L
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Chevrolet Blazer Valve, Pcv
Part Number: 55509665
$5.61 MSRP: $10.58
You Save: $4.97 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PCV Valve
- Replaced by: 12721691
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.0L
View related parts
Chevrolet Blazer Valve,Crankcase Depression Regulator
Part Number: 25098706
$96.64 MSRP: $173.34
You Save: $76.70 (45%)
Product Specifications
- Other Name: VALVE, Engine Crankcase; PCV Valve, Regulator Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Valve Asm,Crankcase Depression Regulator
Part Number: 25042248
Product Specifications
- Other Name: VALVE, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel
View related parts
Chevrolet Blazer Valve, P.C.V.
Part Number: 25040144
Product Specifications
- Other Name: VALVE, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1989-1990 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L

Chevrolet Blazer PCV Valve Parts Questions & Experts Answers

Valve Asm,Pcv
19303069
Q: How do I check and replace the PCV valve in my Chevrolet Blazer,S10,GMC Jimmy and Sonoma?
A: If the engine runs at normal operating temperature, while idling, withdraw the valve (with attached hose) from the rubber grommet on the valve cover. In a V6 engine, PCV valve takes place in a valve cover. Take it out and see if there is any suction and shake it to check for rattles. Put your finger over the tip of the valve. If there is no vacuum at the valve, test a clogged hose, manifold port or valve itself. Replace any plugged or deteriorated hoses. Shut off engine and shake PCV valve; listen for rattle. If it does not rattle, get a new one to replace that which exists currently but doesn't make noise when shaken, and pull it out of end of hose so that you can take note its installed position as well as direction before replacing it again with an identical one To fit a replacement PCV vale, remove it from the end of hose and remember how it has been placed consequently you may have problems with finding appropriate vehicle model year, size for such an item purchased only after comparing previous characteristics with new ones Check for damage on rubber grommet and if need be install a new one. Lastly push another pcv valve and hose into their respective slots inside the valve cover securely.