Sierra 3500 Denali 2WD V8-6.0L (2011)
![background image](/gmc/sierra_3500_denali_2wd/v8-6.0l/Page-863062.png)
2. Unlock the terminal position assurance (TPA):
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Position connector as shown (above) and locate TPA staging cavities.
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Using connector terminal release tool J-38125-553 (1) lift the TPA into the staged position (figure 1). Perform this step on both sides of the
TPA.