PCV Replacement for GM 5.7?

[Greg L]

I haven't had my PCV changed out in our 1996 GMC Sierra 5.7 (35) engine in several years. Truck gets about 5000-7000 miles a year usage.


Is it a good idea to swap it out, just in case?

I read elsewhere on this forum that dirty ones can sludge this motor.


It's cheap insurance, as far as I'm concerned to get one at my parts store for cheap.


GL

 

[Nick1994]

Aren't they like $3? Change it

 

[Greg L]

More like $10 to $15 bucks.

PartsGeek is $4.00

 

[oldmaninsc]

I can't stress this enough - get an OEM valve. I can't tell you the number of aftermarket PCV I've used over the years that didn't function as designed. Fram and Purolator especially were the worst.

I buy Motorcraft for my Fords, AC Delco or dealer for my Chevy, and whatever the Toyota dealer had in stock for the Camry. Yes a few dollars more but well worth it.

 

[Greg L]

I'm looking at Delco....you are 100% right.

My Dodge Ram had a cheap PCV that I replaced last year with OEM Mopar; the old one was weakened plastic....so brittle it crumbled in my hand.

 

[Bgallagher]

Originally Posted By: oldmaninsc
I can't stress this enough - get an OEM valve. I can't tell you the number of aftermarket PCV I've used over the years that didn't function as designed. Fram and Purolator especially were the worst.

I buy Motorcraft for my Fords, AC Delco or dealer for my Chevy, and whatever the Toyota dealer had in stock for the Camry. Yes a few dollars more but well worth it.


+1. Give it the shake test first but go OEM if it fails

 

[ironman_gq]

Often you can flush the goo out of them with a good solvent and get more life out of the OEM one. But if you can find one cheap I'd just replace it, takes a whole 3 minutes.

 

[TmanP]

Make SURE you buy an AC Delco. I just did my Buick- twice! I first used a $2 Purolator, which increased consumption. I realized this and bought an AC Delco kit for the 3800 (MAP sensor mount, spring, two o-rings and PCV valve, for $14 on Amazon. Now I know to do it right.

 

[wtd]

I have this same engine in a 98 chevy truck and I also say use an AC-Delco one if you change it. They are cheap to buy.

Wayne

 

[artificialist]

Originally Posted By: Bgallagher
Originally Posted By: oldmaninsc
I can't stress this enough - get an OEM valve. I can't tell you the number of aftermarket PCV I've used over the years that didn't function as designed. Fram and Purolator especially were the worst.

I buy Motorcraft for my Fords, AC Delco or dealer for my Chevy, and whatever the Toyota dealer had in stock for the Camry. Yes a few dollars more but well worth it.


+1. Give it the shake test first but go OEM if it fails


The shake test isn't ideal. Sometimes the PCV valve has failed because the spring gets metal fatigue.