How do I reset the DTC - 2002 Chevrolet Silverado

You have to take it to a qualified repair shop an have it fixed ,then it will reset .
DTC P0826 (2.2L and 3.5L)

Circuit Description
The TAP Shift system allows the driver to manually shift gears by using the TAP Shift switches located on the Automatic Transmission Shifter. Pushing the Up switch will command an upshift and pushing the Down switch will command a downshift. The TAP Shift system is activated when the gear selector is in the Low (L) position and is deactivated in all other positions.
If the PCM detects an invalid voltage on the TAP up/TAP down switch signal circuit, then DTC P0826 sets. DTC P0826 is a type C DTC.

SERVICE TRAILER BRAKE SYSTEM
This message will be displayed when there is a problem with the TBCM system. If this message persists over multiple ignition cycles there is problem with the TBCM system. Take your vehicle to an authorized GM dealer to have the TBCM system diagnosed and repaired.

Do you know what DTC'S - diagnostic trouble code's are ?
DTC B3894
DTC C0561
DTC C056D or C056E
DTC C0800
DTC C0845
DTC C0870, C1112, C1113, C1114, or C1119
DTC C0880, C0890, C1115, C1116, C1117, or C1118

Your best bet , take it to a qualified repair shop.

You need to have a scan tool hooked up to read DTC'S diagnostic trouble codes ! These would be hard faults .
DTC 6 Theft Deterrent Relay Control Circuit Shorted
DTC B2734 Coded Key Controller Memory Failure
DTC B2960 Invalid Coded Key Present
DTC B3031 Key Decoder Device in Assem Learn Mode
DTC B3055 Key Not Present.
Do you have another key you can try .

Hard Reset your DTC GT5S Junior Duo and remove password pattern lock and...

DTC GT5s pattern problem


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Diagnostic Starting Point - Roof (Folding Top)
Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Vehicle System Check will provide the following information:
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The identification of the control modules which commands the system

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The ability of the control modules to communicate through the serial data circuit

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The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of Vehicle System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Have vehicle scanned for DTC'S . The power roof has a number of DTC'S that can be set ,could make diagnosing easier !
DTC B1010 DTC B1296 DTC B1307 DTC B1325 DTC B1335 DTC B1345 DTC B1395 DTC B316A DTC B3602 DTC B3669 DTC B366A DTC B366B DTC B366C DTC B366D DTC B366E DTC B3674 DTC B3675 DTC B367A DTC B367B DTC B367F DTC B3680 DTC B3683 DTC B3685
There are a number of sensors for your convertible top !
DTC B1010 08: System Sensors Data Mismatch signal invalid
DTC B1010 08 sets when the folding top control (FTC) module detects a switch is not in the proper state when compared to other switches. The conditions that cause DTC B1010 08 to set may also set other Folding Top DTCs. The position and direction of the folding top when the fault occurs will determine whether DTC B1010 08 will set or another Folding Top DTC will set. If any Folding Top DTCs between DTC B1296-DTC B3685 are set, diagnose those DTCs first. After diagnosing any other Folding Top DTCs, clear DTCs and operate the Folding Top to see if DTC B1010 08 resets before diagnosing it.
DTC B1296 01: Movable Roof Header Unlatched Sensor Circuit short to battery

DTC B1296 06: Movable Roof Header Unlatched Sensor Circuit short to ground or open

DTC B1296 58: Movable Roof Header Unlatched Sensor Circuit incorrect reaction after event

DTC B1296 59: Movable Roof Header Unlatched Sensor Circuit circuit/component protection time out
You best bet is to take your vehicle to a ASE certified repair shop or to a GM dealer .
The f

P0603 - GM Type Powertrain - Computer and Auxiliary Outputs - ISO/SAE Controlled Description Control Module Long Term Memory Reset Conditions
Cause DTC P0604 not set, key on, then the PCM determined that its calculated checksum that did not match a previous checksum • Refer to code repair chart for instructions on how to replace a PCM and how to reprogram the replacement
or you can ask the 24 hrs live technical support obd2 bmw icom, they will like to help you, good luck

What makes you think this is a anti-theft system problem ? Is the security light lit on the insturment cluster ? When you turn the key to start does the starter spin the engine ? Crank no start ! Or when you turn the key to the start position the starter does nothing . No crank no start . A aftermarket remote start won't by pass anti-theft system . Your best bet would be to take to a qualified repair shop and have it checked for DTC'S - diagnostic trouble codes . Before you let someone start hacking up wiring circuits .
DTC B2947
DTC B2948
DTC B2957
DTC B2958
DTC B2960
DTC B3031
DTC B3033
DTC P1626
DTC P1630
DTC P1631
DTC P1632

Do you know what DTC'S are , these would point to an area of trouble an to a fix .

4wd switch lit up , DTC'S - diagnostic trouble codes stored in the 4X4 control module . Which 4X4 system ?
Transfer Case - NVG 246-NP8 (Two Speed Automatic)
Transfer Case - NVG 261-NP2 (Two Speed Manual)

DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

There is no reset , if security light is lit there is a problem with the anti-theft system .Should have it checked for DTC'S - diagnostic trouble codes . Could have 8 different B - codes
DTC B0685 DTC B2955 DTC B2960 DTC B3031 DTC B3033 DTC P1626 DTC P1630 DTC P1631
You would need a professional type scan tool to read these type codes , not an OBD 2 code reader .

You May need to Use The Old Ignition Lock & Key ,Due to the Chip In the Key.


Circuit Description

The PCM has a memory area where it stores certain data it needs to save when the key is turned OFF. This area is called Keep Alive Memory. This diagnostic test monitors the PCM's keep alive memory for a loss or unintended change of data. If such a condition occurs, DTC P0603 will set.

Conditions for Setting the DTC

Test Condition

Test continuously.

Failure Condition

Keep alive memory checksum does not match previous checksum.

Action Taken When the DTC Sets

• Clear all keep alive memory locations.
• The Malfunction Indicator Lamp (MIL) will not illuminate.
• No message will be displayed.

Conditions for Clearing the DTC

• A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test.
• A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
• PCM battery voltage is interrupted.
• Using a Scan tool.

Diagnostic Aids

If the battery has been disconnected for any reason DTC P0603 will set. The PCM keeps a running check on the memory; if memory changes it resets. An intermittent loss of power or ground to the PCM will cause a reset.