GM Service Manual Online
For 1990-2009 cars only

SES Light With DTC P1682 - keywords code DTC engine lamp MIL

Subject:SES Light With DTC P1682

Models:2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL



This PI was updated to add additional Models and Keywords. Please discard PIT4040.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

On rare occasions, a SES light may be experienced due to a DTC P1682. This DTC may set anytime a low battery condition is present.

Recommendation/Instructions:

If the cause of this concern is not isolated after following the SI diagnostics, and if you pass the system verification test with No Trouble Found. Please do not attempt any repair. This DTC may been have falsely set due to a previous low battery condition.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.