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2004 Chevrolet Trailblazer Transmission

Tiny
ABOWERSOX
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 170,000 MILES
Had rebuilt transmission put in 3 weeks ago. I get a jerk when I keep a steady speed above 45 mph. I was told it could be a shudder. I was told map sensor or harness so replaced both and no change. Its worse when going up hill at a consistent speed. Any advice
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Thursday, December 17th, 2015 AT 4:01 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would look at basics first

check the spark plugs and coils to be sure the engine is not the issue

Roy
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Thursday, December 17th, 2015 AT 5:05 PM
Tiny
ABOWERSOX
  • MEMBER
  • 2 POSTS
The spark plugs were changed and the coil packs look ok
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Thursday, December 17th, 2015 AT 5:54 PM

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