Question about 1999 GMC Sierra
I got a couple questions. 1st when I am driving, if I accelerate at a decent rate, at about 30 MPH I hear what sounds like a burst of air and can then feel the truck shift into the next gear. Same thing happens if I accelerate quickly at around 57-60 MPH. What is this????
Also, when I first start the truck up and hit the accelerator, there is a loud wurrrrring noise, seems like I can only get it to do it with the truck in gear. If I let off the accelerator it stops, hit the accelerator and it does it. It will do this intermitantly until the truck "warms" up, maybe 2-5 minutes... Any thoughts?
First thing you need to do rule out vacuum to shifting module make sure there is no leaks you usually can detect by a hissing sound or high pitch whistle check your shifting module on your transmission providing transmission screen and filter has been maintained as for the second part gm powersteering pumps have a tendency to whir if a new belt has been installed until it breaks in
Posted on Sep 13, 2008
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 22, 2016 | 2005 Dodge Ram 3500
Feb 19, 2014 | Volkswagen Cars & Trucks
Jan 24, 2014 | Cars & Trucks
Jun 21, 2013 | Cars & Trucks
Oct 20, 2012 | 2002 Audi allroad
Mar 29, 2010 | 2003 Dodge Stratus
Jul 30, 2009 | 1995 Dodge Dakota
Jul 13, 2009 | GMC Jimmy Cars & Trucks
Jan 17, 2009 | 2003 Renault Sportwagon
350 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: