ACDelco 14047619 GM Original Equipment Cruise Control Vacuum Harness Check Valve

This is a great item . Genuine product . works exactly as required .

Delayed review. Worked great. Perfect fit. True oem part. Excellent value compared to parts stores.

Slightly bigger than what was installed but it works well and got the job done on my truck

I have ulterior motives in writing this review, more of advice than a review. The check valve is fine, no problems. Used it on a 1997 Dodge Ram 1500 to correct the vacuum bleed off which effected the climate controls. That's the review. The advice is to locate the initial vacuum port (appears to come from the passenger side of the block) and replace the first check valve on a 90 degree elbow. I wasted a certain amount of time before I discovered where this check valve was located. For what it's worth, I generally work on Chevy's. Needless to say, the plumbing on a Dodge is completely different. If it helps just ONE poor, dumb, SOB... my time has been well spent. The Duck

Finally fixed my a/c vent issue in my 1991 Jeep Cherokee. I tested all my vacuum lines with a vacuum pump and there was no leak, but I was missing the check valve so when the manifold vacuum was reduced under heavy acceleration the air would stop blowing out of the front facing vents and start blowing through the defrost vents. I previously brought a Dorman 47170 which was listed for Chrysler, Dodge, and JEEP and it was defective right out of the box (passed air both directions). I decided to give this a try and glad I did. Was a tight fit on 1/4" hose. Now my forward facing vents continues to work when I'm on the freeway and does not default back to the defrost vents.