Envoy 2WD V8-5.3L (2007)
9. Remove the following parts:
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The valve bore plug
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The TCC valve
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The TCC valve spring(s)
Installation Procedure
Important:
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Clean and inspect the TCC solenoid O-ring for cuts, nicks, and damage. Replace if necessary.
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Inspect the TCC bore for sediment and debris. Flush the bore if necessary.
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Clean and inspect the TCC valve for binding, scoring, and damage.
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Inspect the TCC spring for cracks and deformed or broken coils.
Install the following parts:
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The TCC valve spring
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The TCC valve
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The valve bore plug
1. Install the TCC valve retainer ring (1).
2. Install the TCC control solenoid.
3. Install the TCC control solenoid retaining bolts.
