Question about 1999 Chevrolet Silverado 1500
A 6ya expert 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 repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
These trucks have a problem where moisture builds up in the heater box then freezes. When this freezes and you change your heater settings it breaks the shaft for the blend door. If this is what happened you should be able to look under the dash above and to the right of the gas pedal and you will see two vaccuum accuators one of them you should be able to wiggle around the linkage if it is broke. To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate.
Posted on Dec 13, 2008
common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.
Posted on Feb 23, 2009
SOURCE: Vent control
You have a vacuum leak.Defrost is the default postion(no vacuum).
See if you can locate the small black vacuum line that goes inside the vehicle on the passenger side near the heater core. The trace it back,should see it going to a canister then to the intake manifold.Make sure it is not disconnected or broken somewhere.
Posted on Mar 02, 2009
Tips for a great answer:
Mar 08, 2015 | 2001 Ford Windstar
Dec 02, 2014 | Cars & Trucks
Mar 13, 2017 | 2002 Jeep Grand Cherokee
Nov 18, 2012 | 1997 Ford F150 Regular Cab
Nov 01, 2017 | 2001 Ford Expedition
Sep 08, 2009 | 2002 Chevrolet Suburban
Jun 09, 2009 | 1997 Ford Explorer AWD
May 28, 2009 | 2000 Ford F350 Super Duty Super Cab
Jan 01, 2009 | 1995 Pontiac Grand Am
570 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: