Question about 2003 Chevrolet Astro

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Driver and Passenger auto door locks are inop.

When I try to remotely operate the door locks on my 2003 Chevy Astro, only the sliding passenger door and rear hatch will lock and unlock. This is the same whether I am using the remote key chain control, or either operator button on the driver or passenger door. The driver and passenger door locks do not work at all.

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Sounds like bad wiring, or bad door lock actuators. Check for power while locking/unlocking the doors.

Posted on Jun 29, 2009

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1 Answer

2007 Buick Lacrosse Door Locks not working getting weak


Important: If all 3 passenger door locks are inoperative from both door lock switches, test the unlock control circuit between the splice and the BCM for an open.? Do you know how to do this ? Looking at a wiring diagram an using a DMM - digital multi-meter ?
Free wiring diagrams here http://www.bbbind.com/free-tsb , enter vehicle info. year , make , model an engine size . under system click on body & accessories , then under subsystem click on power locks . Click search button then the blue link . Or maybe your best bet mite be to take it to a qualified repair shop. You would need factory service repair info. to find splice location .

Power Door Locks Inoperative - Passenger Door
Step
Action
Yes
No
Schematic Reference: Door Lock/Indicator Schematics
Connector End View Reference: Vehicle Access Connector End Views
DEFINITION: One or all 3 of the passenger door lock actuators do not operate, or, the front passenger door lock switch does not operate.
1
Did you perform the Diagnostic System Check - Vehicle?
Go to Step 2
Go to Diagnostic System Check - Vehicle
2
Verify that the Power Door Locks Inoperative - Passenger Door fault is present.
Do the door locks operate as described in Power Door Locks Description and Operation ?
Go to Testing for Intermittent Conditions and Poor Connections
Go to Step 3
3
Are all 3 of the passenger doors locks inoperative from both door lock switches?
Go to Step 10
Go to Step 4
4
Install a scan tool.
Close all of the vehicle doors.
With the scan tool, observe the Right Front (RF) Door Lock Switch parameter in the Data Display, Inputs list of the body control module (BCM).
Operate the front passenger door lock switch to both the LOCK and UNLOCK positions.
Did the parameter change to both the LOCK and UNLOCK states?
Go to Step 7
Go to Step 5
5
Important: If the 3-amp fuse of the jumper wire opens when the jumper wire is connected, test the appropriate signal circuit for a short to battery positive voltage.
Disconnect the harness connector of the front passenger door lock switch.
Connect a 3-amp fused jumper wire between the lock switch lock signal circuit of the harness connector and a ground.
Observe the RF Door Lock Switch parameter.
Connect the 3-amp fused jumper wire between the lock switch unlock signal circuit of the harness connector and a ground.
Observe the RF Door Lock Switch parameter.
Did the Scan Tool parameter change to the both the LOCK and UNLOCK states?
Go to Step 6
Go to Step 8
6
Connect the 3-amp fused jumper wire between the lock switch lock signal circuit and the ground circuit of the harness connector while observing the appropriate Scan Tool parameter.
Did the Scan Tool parameter change to the LOCK state?
Go to Step 11
Go to Step 14
7
Disconnect the harness connector of the inoperative door lock actuator.
Connect a test lamp between the door lock actuator lock control circuit and the door lock actuator unlock control circuit of the harness connector.
Operate the front passenger door lock switch to the LOCK and UNLOCK positions.
Did the test lamp illuminate in both positions?
Go to Step 13
Go to Step 9
8
Test the signal circuits of the front passenger door lock switch for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 12
9
Test the lock control circuit of the inoperative door lock actuator for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 10
10
Important: If all 3 passenger door locks are inoperative from both door lock switches, test the unlock control circuit between the splice and the BCM for an open.
Test the unlock control circuit of the inoperative door lock actuator for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 12
11
Inspect for poor connections at the harness connector of the front passenger door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 15
12
Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 16
13
Inspect for poor connections at the harness connector of the inoperative door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 17
14
Repair the open ground circuit of the front passenger door lock switch. Refer to Circuit Testing and Wiring Repairs .
Did you complete the repair?
Go to Step 18
--
15
Replace the front passenger door lock switch. Refer to Front Side Door Lock Replacement .
Did you complete the replacement?
Go to Step 18
--
16
Replace the BCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 18
--
17
Replace the inoperative door lock actuator. Refer to Front Side Door Lock Actuator Replacement
Did you complete the replacement?
Go to Step 18
--
18
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

Jul 10, 2018 | Buick Cars & Trucks

1 Answer

2004 chevy malibu driver and passenger door lock problems


The locks on your vehicle are electronically controlled by the BCM - body control module . The driver an passenger door switche's are input's to the BCM . Do you know anything about automotive electronic's ? anti theft alarm remote, could this be part of the problem , No it's just a key less entry remote , nothing to do with the anti-theft .
Door Lock System Components
The Power Door Lock System consists of the following components:
• Body control module (BCM)
• Driver door lock switch
• Front passenger door lock switch
• Door lock actuators in each of the doors
• IBCM (PWR) 15-amp fuse

Door Lock System Controls
The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following:
• A door lock switch Lock or Unlock actuation
• A keyless entry transmitter actuation
• An automatic door lock actuation
• An automatic door unlock actuation
• A last door closed locking (LDCL) actuation

Driver and Passenger Door Unlock Operation w/o Keyless Entry
When the body control module (BCM) detects a transition of either of the door lock switches to the Unlock position, it switches the door lock actuator unlock control circuits to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the driver passenger door lock actuators transition to the Unlock position.

Your best bet , take your vehicle to a qualified repair shop ! Need special tool to diagnose .

Power Door Locks Inoperative

Install a scan tool.
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the door lock switch parameter in the Doors data list.
Does the scan tool display Idle?
YES - Go to Step 4
NO - Go to Step 8
4
Activate the driver door lock switch to the LOCK and UNLOCK positions.
Does the scan tool display Idle?
YES - Go to Step 9
NO - Go to Step 5
5
Activate the front passenger door lock switch to the LOCK and UNLOCK positions.
Does the scan tool display Idle?
YES - Go to Step 9
NO - Go to Step 6
6
With a scan tool, observe the driver door lock actuator command and the passenger door lock actuator command parameters in the Doors data list.
Activate a door lock switch to the LOCK and UNLOCK positions.

Dec 24, 2017 | 2009 Chevrolet Malibu

1 Answer

Power door locks wont work on chevy colorado 2005


I really doubt one loose door latch will keep all the door locks from working . There are a lot of thing's involved in the power door locks ,relay's , wiring , master control switch etc..... Viewing wiring diagrams , testing electrical circuit's , PWR LOCKS 20A fuse etc....Are the power door locks and the driver power window inoperative?

Did you review the Power Door Locks Description and Operation?
YES - Go to Step 2
NO - Go to Symptoms - Doors
2
Verify that the power door locks are inoperative.
Do the power door locks operate normally?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring System
NO - Go to Step 3
3
Are the power door locks and the driver power window inoperative?
YES - Go to Step 7
NO - Go to Step 4
4
Are the power door locks inoperative from a single door lock switch?
YES - Go to Step 5
NO - Go to Step 6
5
Is the driver door lock switch the inoperative switch?
YES - Go to Step 8
NO - Go to Step 9
6
Is the driver door lock actuator the inoperative actuator?

Test the battery positive voltage circuit of the drivers switch assembly for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 8
8
Test the ground circuit of the drivers switch assembly for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 13
9
Test the passenger door lock switch control circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 12
10
Test the driver door lock actuator unlock control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 14
11
Test the door lock actuator control circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 15
12
Test the passenger door lock switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 16
13
Inspect for poor connections at the harness connector of the drivers switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 17
14
Inspect for poor connections at the harness connector of the driver door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 18
15
Inspect for poor connections at the harness connector of the appropriate passenger door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 19
16
Inspect for poor connections at the harness connector of the passenger door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 20
17
Replace the driver switch assembly. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .
Did you complete the repair?
Go to Step 21
--
18
Replace the driver door lock actuator. Refer to Front Side Door Lock Replacement .
Did you complete the repair?
Go to Step 21
--
19
Replace the appropriate passenger door lock actuator. Refer to Front Side Door Lock Replacement or Rear Door Lock Replacement .
Did you complete the repair?
Go to Step 21
--
20
Replace the passenger door lock switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .
Did you complete the repair?
Go to Step 21
--
21
Operate the system in order to verify the repair.
Did you find and correct the condition?
System OK
Go to Step 2

Jul 17, 2012 | Chevrolet Colorado Cars & Trucks

2 Answers

I have a 2003 Astro - interior issues


I had the same problem and found that my sliding side door "closed" switch, which is small and round and in the door frame, was not being pushed open all the way when the door was closed! As soon as I put a credit card in the spot where the switch hits the door all the locks and lights worked again. So I just taped a washer to the door where the pin switch hits it for now. The computer thinks the door is still open and will not alow them to lock and the lights won't operate right either.

Aug 04, 2009 | 2003 Chevrolet Astro

1 Answer

2005 chevy silverado 4 door rear locks


Sound like the door actuators are bad if you take it somewhere take it to a dealer auto body shop Its Cheaper

Mar 06, 2009 | 2003 Chevrolet Silverado 2500HD

1 Answer

Rear side windows


This may be just a case of inadvertently hitting the window lock out n th driver door window switch by mistake. Check that first. Here's some background on window operation

Principles of Operation
The driver power window regulator motor is controlled directly by the master window/door lock/unlock switch (and its integrated "auto down" module). Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The driver power window regulator motor is a reversible motor that is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The passenger power window regulator motor is controlled directly by the passenger power window switch and can also be controlled by the master window/door lock/unlock switch. Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The passenger power window regulator motor is a reversible motor, which is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The power rear quarter glass is also directly controlled by the master window/door lock/unlock switch. The power rear quarter glass power latches also utilize reversible motors. The power rear quarter glass power latches are operated by applying power and ground to the motor leads to open the window, and then reversing polarity on those same leads to close the window.
Symptom Chart Condition Possible Sources Action
  • All windows are inoperative
  • BJB Fuse:
    • F20.
  • Circuit.
  • Power window relay.
  • Front door power window switch.
  • GO to Pinpoint Test A .
  • Single power window is inoperative
  • Front door power window switch.
  • Front door power window regulator.
  • Circuit.
  • Driver door power window switch.
  • GO to Pinpoint Test B .
  • Vent power window is inoperative — quarter window glass power latch
  • Circuit.
  • Quarter window glass switch.
  • Quarter window glass power latch.
  • GO to Pinpoint Test C .
  • The one touch down feature is inoperative
  • Master window regulator and door lock switch.
  • INSTALL a new master window/door lock/unlock switch. REFER to Switch—Master Window Door Lock/Unlock .
  • The back window will not defrost
  • CJB Fuses:
    • F30 (10A).
    • F32 (20A).
    • F34 (20A).
  • BJB Fuse:
    • F27 (45A)
  • Circuit.
  • Heated back window switch.
  • SEC/timer module.
  • Rear window defrost relay.
  • GO to Pinpoint Test D .
  • The back window defrost will not shut off automatically
  • SEC/timer module.
  • Circuit.
  • Rear window defrost relay.
  • GO to Pinpoint Test E .

Jan 28, 2009 | 1999 Mercury Villager

1 Answer

2003 Astro van - power locks & AC issues...


There is a vacuum line that goes from the vacuum reservoir (usually next to the bottom of the passenger side engine) up and across the top of the engine to connect on the driver side of the engine. The vaccum line cracks/leeaks and will not allow the vent vacuum actuators to function. Replace the line. Use a thicker wall buts same inside diameter rubber vaccuum hose. Probably under $5. People waste a bunch of time replacing the actuators, switches, etc. Its just the vacuum line and poor original placement/design.

Dec 01, 2008 | 1999 Chevrolet Astro

1 Answer

Hi, I have a 2003 gmc sierra hd, duramax engine, 2 doors, long box. There is power locks on it and the door driver's door doesn't lock either with the driver switch or the passenger door switch, I change...


I have a similar problem. The remote sometimes opens all doors, and other times it will only open the 2 rear doors. Once inside the vehicle, the driver side window controls intermittently operates all windows and doors. It has no effect on the 2 rear doors, as the window controls still work. This behavior happens intermittently while driving the vehicle.

Aug 13, 2008 | 2002 GMC Envoy

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