2000 Chevy Truck transmission wont down shift

2000 CHEVROLET TRUCK
146,000 MILES • V8 • 4WD • AUTOMATIC
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LCROSMAC
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  • 1 POST
I have a 2000 chevy K3500 truck with a 7.4L engine it had a blown head gasket , we fixed that. Now ti won't down shift when going down the road. What could be casuing this?
Mar 27, 2010 at 4:47 PM
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DR LOOT
  • ✓Experienced Mechanic
  • 2,311 POSTS
When you were doing the head gaskets you could damage the wiring loom going to the transmission, double-check your work make sure you have all the connectors back together and that you have not damaged wiring loom
Apr 6, 2010 at 4:50 PM
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