2006 GMC Sierra Trans oil Chang e

2006 GMC SIERRA
140,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
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LARRY_1958
  • MEMBER
  • 1 POST
Do I need to flush my trans or is just oil and filter change ok
Nov 17, 2015 at 3:43 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
GM doesn't recommend flushing of any component even coolant just change them. if fluid is dark brown or black have a trans guy check trans as it's needing a rebuild problaby
Nov 17, 2015 at 4:34 AM
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