analyte Posted May 12, 2012 Report Share Posted May 12, 2012 I have figured out what is making the sound under the hood. This morning the wife and I were backing out of the driveway and it started at 5mph or less. I quickly popped the hood and jumped out. It stopped, but I had the wife put it in reverse with the brakes on and start turning the wheel like I was backing out. It started again and I was able to pinpoint the origin. It's a black canister with an electrical plug-in on top right beside the brake reservoir with a hose that goes to the back of the intake. It doesn't appear to be part of the Hydroboost system so I'm not sure what it is or what it actually does. Here is a pic if it will let me attach it. Thanks, Kerry Quote Link to comment Share on other sites More sharing options...
BlownFogger540 Posted May 12, 2012 Report Share Posted May 12, 2012 its a vacume pump i have a used one with 35k if you need it $35 shipped Quote Link to comment Share on other sites More sharing options...
gmJake Posted May 12, 2012 Report Share Posted May 12, 2012 You let your wife drive the SS? Quote Link to comment Share on other sites More sharing options...
analyte Posted May 12, 2012 Author Report Share Posted May 12, 2012 You let your wife drive the SS? It's a Sierra Denali, but it's a close cousin to the SSS. It's actually her truck believe it or not.... Quote Link to comment Share on other sites More sharing options...
analyte Posted May 12, 2012 Author Report Share Posted May 12, 2012 its a vacume pump i have a used one with 35k if you need it $35 shipped Pm sent Quote Link to comment Share on other sites More sharing options...
analyte Posted May 13, 2012 Author Report Share Posted May 13, 2012 That faulty electric booster is agravating. Any reason I can't unplug it until a replacement comes in? Kerry Quote Link to comment Share on other sites More sharing options...
gmJake Posted May 13, 2012 Report Share Posted May 13, 2012 It's a Sierra Denali, but it's a close cousin to the SSS. It's actually her truck believe it or not.... She lets you drive her Denali? Quote Link to comment Share on other sites More sharing options...
gmJake Posted May 13, 2012 Report Share Posted May 13, 2012 its a vacume pump i have a used one with 35k if you need it $35 shipped Do you have a better pic of this? Thumbnails blow on my phone. Quote Link to comment Share on other sites More sharing options...
analyte Posted May 13, 2012 Author Report Share Posted May 13, 2012 She lets you drive her Denali? Probably not anymore!!!! LOL Quote Link to comment Share on other sites More sharing options...
gmJake Posted May 14, 2012 Report Share Posted May 14, 2012 Probably not anymore!!!! LOL That will learn ya Quote Link to comment Share on other sites More sharing options...
kissfans03ss Posted May 14, 2012 Report Share Posted May 14, 2012 I have figured out what is making the sound under the hood. This morning the wife and I were backing out of the driveway and it started at 5mph or less. I quickly popped the hood and jumped out. It stopped, but I had the wife put it in reverse with the brakes on and start turning the wheel like I was backing out. It started again and I was able to pinpoint the origin. It's a black canister with an electrical plug-in on top right beside the brake reservoir with a hose that goes to the back of the intake. It doesn't appear to be part of the Hydroboost system so I'm not sure what it is or what it actually does. Here is a pic if it will let me attach it. Thanks, Kerry I have the same thing on my 03 and fyi these trucks never came from the factory with hydroboost but a lot of guys install it for brake improvement. Sent from my DROID BIONIC using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
analyte Posted May 14, 2012 Author Report Share Posted May 14, 2012 I have the same thing on my 03 and fyi these trucks never came from the factory with hydroboost but a lot of guys install it for brake improvement. Sent from my DROID BIONIC using Tapatalk 2 Yep, I thought it did, but I'm still learning. It could be in my future though!! Quote Link to comment Share on other sites More sharing options...
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