9-7X V8-6.0L (2008)
Communications Control Module: Customer Interest
Electrical - No Start, Dead Battery
Bulletin No.: 09-06-03-003D
Date: February 17, 2010
Subject: Vehicle Will Not Start, Dead Battery (Inspect for Parasitic Draw)
2008 Chevrolet Colorado, TrailBlazer Models
2008 GMC Canyon, Envoy Models
2008 HUMMER H3 without Navigation Radio (RPO UM8)
2008 Saab 9-7X
All Equipped with OnStar(R) RPO UE1
This bulletin is being revised to add a Note in Step 10.2 for Correction procedure clarity. Please discard Corporate Bulletin Number 09-06-03-003C
(Section 06 - Engine/Propulsion System).
Some customers may comment that the vehicle will not start due to a dead battery.
This condition may be caused by a parasitic draw from one of the electronic modules, which does not enter low power mode (does not go to "sleep").
The parasitic draw remains present after the ignition key is cycled to the OFF position. The next ignition cycle may cause the module to reset.
1. Verify the customer's concern.
Depending on the magnitude of the parasitic draw, a no start condition may occur on a vehicle with a fully charged battery after it has been parked
for a period of less than 48 hours.
2. Inspect the battery. Refer to Battery Inspection/Test in SI. If the battery passes the test, proceed to step 3.
Always check for aftermarket accessories (non-OEM) as the first step in diagnosing electrical conditions. If the vehicle is so equipped, disconnect
the system to verify that these add-on accessories are not the cause of the condition.
3. Inspect for aftermarket accessories. Refer to Checking Aftermarket Accessories in SI.
4. Colorado, TrailBlazer, Canyon and Envoy models equipped with AM/FM stereo and CD/MP3 player (RPO US8) only - Refer to GMVIS
to see if Customer Satisfaction Bulletin 08134 applies. If the vehicle is involved and the bulletin has not been performed, reprogram the radio
following the steps in Customer Satisfaction Bulletin 08134.
5. Check for current/history DTCs. Document and clear all DTCs. Disconnect the scan tool.
When troubleshooting for parasitic draws, be sure to connect the digital multimeter in parallel with the Parasitic Draw Test Switch J 38758 and
turn it ON before beginning the test. Failure to do so could cause any module potentially causing a draw to reset.
6. Install a Parasitic Draw Test Switch J 38758 and connect a digital multimeter. Refer to Battery Electrical Drain/Parasitic Load Test in SI.
The test switch on the J 38758 is marked ON and OFF. When the test switch is in the ON position, the circuit is closed and electrical
current will pass through the switch. When the test switch is in the OFF position, the circuit is open and electrical current will not pass
through the switch.
7. Turn the Test Switch J 38758 ON and start the vehicle. Allow the engine to idle while in Park for 5 minutes. Turn on all vehicle features and
accessories. Cycle through all radio bands, including XM if equipped, and any other available radio features. Attempt, but do not complete, an
OnStar(R) call. Cycle the HVAC modes, power seats and interior lights. Leave the accessories ON except for high load features such as