Is there a problem with my Silverado vacuum pump?

Here’s an issue that has me stumped. 2000 Silverado, 4.3, 200K mi. Truck runs great, no oil consumption. I have a very random oil pressure fluctuation, normally I have 40 psi (+ or -… Receive a notice letter from GM yesterday on failing vacuum pumps causing low speed hard brake pedal that could cause a problem in low speed braking.

Are there any recalls on Chevy Silverado trucks?

September 11, 2019 General Motors announced a recall campaign affecting 3.46 million trucks Wednesday over a vacuum pump system defect. Affect models include the 2014 – 2018 Chevrolet Silverado, Chevrolet Tahoe, Chevrolet Suburban, GMC Sierra, GMC Yukon and Cadillac Escalade. Dealers will reprogram the brake control module.

How do you replace a Sierra vacuum pump?

Separate the vacuum hose from the pump and rotate the hose out of the work area. Four bolts secure the vacuum pump in place. Using a the 11mm socket and a combination of the 3/8-in drive extensions, loosen all four bolts.

What kind of vacuum pump does a Chevy Camaro use?

GM has updated to a new p/n “12669488”. Pumps are made in china, says it right on the back of the pump, but you can get an AC delco one on amazon for $120. The corvettes and camaros actually use an electric vacuum pump p/n 20981800. There is actually a kit of plugs you can buy from GM to delete…

How do you remove a vacuum pump from a Silverado?

Once the lower steering shaft is separated from the input shaft, slide the lower shaft down and toward the front of the vehicle to separate the lower shaft from the intermediate shaft. Place the stretch belt removal tool on the vacuum pump pulley.

Is there a problem with my Silverado vacuum pump?