Chevy Silverado stalls when braking refers to when the vehicle stops running because the truck is stopping or slowing down. Common complaints are:
- Silverado dies when brakes are applied
- Silverado stalls when braking hard
- Silverado stalls when coming to a stop light
- Silverado shuts off when slowing down
This article provides a list of possible causes and corrections so as to remedy a Chevrolet Silverado that shuts off when slowing down or braking hard. Check for one or more possible malfunctions:
|1. Faulty coil||1. Test and replace coil, if required. Refer to "ELECTRICAL TESTING/IGNITION COIL AND REMOVAL" in download repair manual for testing and servicing procedures.|
|2. Carbon build-up on throttle plate||2. Remove the vehicles throttle body and de-carbon. Refer to "FUEL SYSTEM/THROTTLE BODY/FUEL INJECTION - REMOVAL" in download repair manual.|
|3. Incorrectly gapped or worn spark plugs||3. Clean or replace and re-gap spark plugs. Refer to "SPARK PLUG/ELECTRICAL/IGNITION CONTROL - CLEANING" in download service manual.|
|4. Spark plug cables crossed or defective||4. Replace spark plug cables and check for correct firing order. Refer to "SPARK PLUG CABLES/ELECTRICAL/IGNITION CONTROL - DIAGNOSIS AND TESTING" in download repair manual.|
|5. Engine idle speed too low||5. Check idle air control circuit. Refer to "IDLE AIR CONTROL MOTOR/FUEL SYSTEM/FUEL INJECTION - DESCRIPTION" in download repair manual.|
|6. Burned or worn distributor rotor||6. Install new distributor rotor.|
Carbon build-up on throttle plate
If a Chevy Silverado stalls when stopping or braking, especially braking hard or quickly, there’s a good chance of excessive carbon build-up on the throttle plate.
When an accumulation of carbon, grime or residue builds-up on the throttle plate or assembly, it can hinder throttle return response, and result in air/fuel imbalance.
The lack of proper proportion of fuel to air causes the vehicle to lose voltage and stall, or attempt to stall. In many cases, an instrument warning system might indicate a problem, such as low oil pressure, voltage problems, etc.