Heated Seat Always On

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Driver Seat Schematics , Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views
1	Did you perform the Power Seat Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Power Seat Systems
2	Operate the heated seat system. Does the system operate normally?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Install a scan tool. Display the Heated Seat Status parameter in the driver seat module (DSM) Input/Output data list. Start the engine. Does the scan tool display the Heated Seat Status parameter as Off?	Go to Step 6	Go to Step 4
4	Display the Heated Seat Mode parameter in the door module Inputs data list. Does the scan tool display the Heated Seat Mode parameter as Off?	Go to Step 6	Go to Step 5
5	Turn OFF the ignition. Disconnect the heated seat switch connector to the door module. Start the engine. Does the scan tool display the Heated Seat Mode parameter as Off?	Go to Step 7	Go to Step 8
6	Replace the DSM. Refer to Memory Seat Control Module Replacement . Is the repair complete?	Go to Step 9	-
7	Replace the heated seat switch. Refer to Heated Seat Switch Replacement - Front . Is the repair complete?	Go to Step 9	-
8	Replace the door module. Refer to Switch Replacement - Door Lock and Side Window - Driver or Switch Replacement - Door Lock and Side Window - Passenger in Doors. Is the repair complete?	Go to Step 9	-
9	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3