2004 Chevrolet Trailblazer Transmission

2004 CHEVROLET TRAILBLAZER
170,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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ABOWERSOX
  • MEMBER
  • 2 POSTS
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
Dec 17, 2015 at 4:01 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
I would look at basics first

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

Roy

Dec 17, 2015 at 5:05 PM
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ABOWERSOX
  • MEMBER
  • 2 POSTS
The spark plugs were changed and the coil packs look ok
Dec 17, 2015 at 5:54 PM