Discussion
Hi All
I bought a C6 auto about 6 months ago. Just a couple of questions -
A couple of times I have not been able to move from P to R to reverse the car off the driveway upon first starting the car for a week, but after a few minutes I can select reverse. Is this just waiting for the car to warm up ?
Sometimes the door won't open from the inside but opening the window and then opening the door from the outside solves the problem.
The service warning light has come on even though the car had a basic oil change etc a year ago but the service interval not reset. Is this anything to worry about or can it be ignored. Car drives well.
Thanks in advance for any usefull responses
I bought a C6 auto about 6 months ago. Just a couple of questions -
A couple of times I have not been able to move from P to R to reverse the car off the driveway upon first starting the car for a week, but after a few minutes I can select reverse. Is this just waiting for the car to warm up ?
Sometimes the door won't open from the inside but opening the window and then opening the door from the outside solves the problem.
The service warning light has come on even though the car had a basic oil change etc a year ago but the service interval not reset. Is this anything to worry about or can it be ignored. Car drives well.
Thanks in advance for any usefull responses
I would hazard a guess at not being able to get out of P may be down to a switch or oil pressure.
A, when was the oil and filter changed in the gearbox, is there any sign of leakage.
B, there will be a switch somewhere that tells the car you are holding the brake before
you will be able to get it out of Park.
As for the service light you will need to know what code is being set to know what it is.
If the oil service %age is zero or low you can bring it up on the DIC and press and hold reset to reset it.
(DIC = driver information centre)
Dave.
A, when was the oil and filter changed in the gearbox, is there any sign of leakage.
B, there will be a switch somewhere that tells the car you are holding the brake before
you will be able to get it out of Park.
As for the service light you will need to know what code is being set to know what it is.
If the oil service %age is zero or low you can bring it up on the DIC and press and hold reset to reset it.
(DIC = driver information centre)
Dave.
Found this on corvetteforum.com as well.
You could also ask on the UK website cccuk.org.uk see if someone has other ideas.
Power Door Latch System Malfunction
Circuit/System Description
When the remote control door lock receiver (RCDLR) receives an input from either the driver exterior door handle switch or driver interior door handle switch, it checks the Lock/Unlock status of the driver door. If the status of the driver door is Unlock, the RCDLR applies the ground for the driver power door latch.
At the same time that the RCDLR is receiving its input, the driver door module (DDM) is also receiving the same input. When the DDM receives its input from the door handle switch, it checks the window indexing status of the driver door. If the window is below the index point, it sends a serial data message to the body control module (BCM) to apply voltage for the driver power door latch. If the window is above the index point, it will first index the window, then send a serial data message to the BCM to apply voltage for the driver power door latch.
Circuit/System Testing
Door Latch Inoperative from Exterior Door Handle Switch
Ignition OFF, disconnect the harness connector at the inoperative exterior door handle switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal C and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the appropriate Door Control Module Scan Tool Exterior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the appropriate door control module.
Verify the appropriate RCDLR Scan Tool Exterior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the RCDLR.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground terminal C. Verify the appropriate Door Control Module Scan Tool Exterior Door Handle Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to voltage or an open/high resistance. If the circuit tests normal, replace the appropriate door control module.
Install a 3-A fused jumper wire between the signal circuit terminal A and ground terminal C. Verify the RCDLR scan tool exterior door handle switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal A for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate exterior door handle switch.
Door Latch Inoperative from Interior Door Handle Switch
Ignition OFF, disconnect the harness connector at the inoperative interior door handle switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the appropriate Door Control Module Scan Tool Interior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the appropriate door control module.
Verify the appropriate RCDLR Scan Tool Interior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the RCDLR.
Install a 3-A fused jumper wire between the signal circuit terminal C and ground terminal A. Verify the appropriate Door Control Module Scan Tool Interior Door Handle Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal C for a short to voltage or an open/high resistance. If the circuit tests normal, replace the appropriate door control module.
Install a 3-A fused jumper wire between the signal circuit terminal B and ground terminal A. Verify the RCDLR scan tool interior door handle switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate interior door handle switch.
Door Latch Inoperative from All Door Handle Switches
Ignition OFF, disconnect the harness connector at the inoperative door latch.
Connect a test lamp between latch control circuit and ground.
Ignition ON, activate the appropriate interior door handle switch. The test lamp should turn ON when activating the door handle switch.
⇒ If the test lamp is always OFF, test the latch control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always ON, test the latch control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
Connect a test lamp between the latch control circuit and latch enable control circuit.
Ignition ON, activate the appropriate interior door handle switch. The test lamp should turn ON when activating the door handle switch.
⇒ If the test lamp is always ON, test the latch enable control circuit for a short to ground. If the circuit tests normal, replace the RCDLR.
⇒ If the test lamp is always OFF, test the latch enable control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate door latch.
Chevy Cust Svc
CF Senior Member
You could also ask on the UK website cccuk.org.uk see if someone has other ideas.
Power Door Latch System Malfunction
Circuit/System Description
When the remote control door lock receiver (RCDLR) receives an input from either the driver exterior door handle switch or driver interior door handle switch, it checks the Lock/Unlock status of the driver door. If the status of the driver door is Unlock, the RCDLR applies the ground for the driver power door latch.
At the same time that the RCDLR is receiving its input, the driver door module (DDM) is also receiving the same input. When the DDM receives its input from the door handle switch, it checks the window indexing status of the driver door. If the window is below the index point, it sends a serial data message to the body control module (BCM) to apply voltage for the driver power door latch. If the window is above the index point, it will first index the window, then send a serial data message to the BCM to apply voltage for the driver power door latch.
Circuit/System Testing
Door Latch Inoperative from Exterior Door Handle Switch
Ignition OFF, disconnect the harness connector at the inoperative exterior door handle switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal C and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the appropriate Door Control Module Scan Tool Exterior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the appropriate door control module.
Verify the appropriate RCDLR Scan Tool Exterior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the RCDLR.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground terminal C. Verify the appropriate Door Control Module Scan Tool Exterior Door Handle Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to voltage or an open/high resistance. If the circuit tests normal, replace the appropriate door control module.
Install a 3-A fused jumper wire between the signal circuit terminal A and ground terminal C. Verify the RCDLR scan tool exterior door handle switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal A for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate exterior door handle switch.
Door Latch Inoperative from Interior Door Handle Switch
Ignition OFF, disconnect the harness connector at the inoperative interior door handle switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the appropriate Door Control Module Scan Tool Interior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the appropriate door control module.
Verify the appropriate RCDLR Scan Tool Interior Door Handle Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the RCDLR.
Install a 3-A fused jumper wire between the signal circuit terminal C and ground terminal A. Verify the appropriate Door Control Module Scan Tool Interior Door Handle Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal C for a short to voltage or an open/high resistance. If the circuit tests normal, replace the appropriate door control module.
Install a 3-A fused jumper wire between the signal circuit terminal B and ground terminal A. Verify the RCDLR scan tool interior door handle switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate interior door handle switch.
Door Latch Inoperative from All Door Handle Switches
Ignition OFF, disconnect the harness connector at the inoperative door latch.
Connect a test lamp between latch control circuit and ground.
Ignition ON, activate the appropriate interior door handle switch. The test lamp should turn ON when activating the door handle switch.
⇒ If the test lamp is always OFF, test the latch control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always ON, test the latch control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
Connect a test lamp between the latch control circuit and latch enable control circuit.
Ignition ON, activate the appropriate interior door handle switch. The test lamp should turn ON when activating the door handle switch.
⇒ If the test lamp is always ON, test the latch enable control circuit for a short to ground. If the circuit tests normal, replace the RCDLR.
⇒ If the test lamp is always OFF, test the latch enable control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR.
If all circuits test normal, test or replace the appropriate door latch.
Chevy Cust Svc
CF Senior Member
The block connectors in the Body Control module can be the cause of a whole host of little niggles.
Next time it doesn't want to shift out of park, get someone to check if the brake lights are on and off when they should be. If you find they are on when your foot isn't on the brake, (or off when you are pressing the brake) go straight to the body control module (BCM). It's the black plastic box behind the passenger side kick panel containing a number of fuses and 2 big block connectors which are latched in place. (See HERE )
What can happen is that the block connectors are installed dry, so check them like this:
Wiggle the block connectors (gently) without unlatching them and IF the problem with getting it out of 'Park' is solved instantly, then get yourself off to Maplins and get a tube of conductive grease (that's electrically conducting - not temperature conducting!).
Disconnect the battery, open up the latches on the block connectors and put a smear of this over the contacts. Then put it all back together. It should now behave a bit more reliably more years to come. At £4.99 it's a nice cheap fix if it works!
Next time it doesn't want to shift out of park, get someone to check if the brake lights are on and off when they should be. If you find they are on when your foot isn't on the brake, (or off when you are pressing the brake) go straight to the body control module (BCM). It's the black plastic box behind the passenger side kick panel containing a number of fuses and 2 big block connectors which are latched in place. (See HERE )
What can happen is that the block connectors are installed dry, so check them like this:
Wiggle the block connectors (gently) without unlatching them and IF the problem with getting it out of 'Park' is solved instantly, then get yourself off to Maplins and get a tube of conductive grease (that's electrically conducting - not temperature conducting!).
Disconnect the battery, open up the latches on the block connectors and put a smear of this over the contacts. Then put it all back together. It should now behave a bit more reliably more years to come. At £4.99 it's a nice cheap fix if it works!
philipbrown123 said:
Hi All
I bought a C6 auto about 6 months ago. Just a couple of questions -
A couple of times I have not been able to move from P to R to reverse the car off the driveway upon first starting the car for a week, but after a few minutes I can select reverse. Is this just waiting for the car to warm up ?
Sometimes the door won't open from the inside but opening the window and then opening the door from the outside solves the problem.
The service warning light has come on even though the car had a basic oil change etc a year ago but the service interval not reset. Is this anything to worry about or can it be ignored. Car drives well.
Thanks in advance for any usefull responses
You may be doing this already...and it's only a work-around until you get the interior door release fixed...but to avoid having to lower the window and use the exterior door release, you could just use the manual lever by the side of the seat (although not sure if that will correctly index the windows or not as I've never used it on mine!).I bought a C6 auto about 6 months ago. Just a couple of questions -
A couple of times I have not been able to move from P to R to reverse the car off the driveway upon first starting the car for a week, but after a few minutes I can select reverse. Is this just waiting for the car to warm up ?
Sometimes the door won't open from the inside but opening the window and then opening the door from the outside solves the problem.
The service warning light has come on even though the car had a basic oil change etc a year ago but the service interval not reset. Is this anything to worry about or can it be ignored. Car drives well.
Thanks in advance for any usefull responses
A bigger problem this time. The button to start / stop the car got pushed into the dashboard. Managed to retrieve it back by removing lower dash surround and pushing / pulling it back into position. Now the car is completely electrically dead. No immobiliser light or anything. Probably a loose wire etc.
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