2003 Chevrolet Suburban Symptoms Shifts Fine 1st 2nd And Reverse Does Shift

2003 CHEVROLET SUBURBAN
190,000 MILES
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JCALDWELL
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  • 2 POSTS
Symptoms: Shifts fine in 1st, 2nd & reverse. Does not shift into 3rd & 4th.

Just replaced both transmission shift solenoids, trans filter & fluid.

Still having same issue. Can you help?

Thank you
Mar 26, 2013 at 11:23 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
most likely an internal failure.

have a trans shop check it with a scan tool. it could be an electrical issue but i bet on the internal issue

Roy
Mar 26, 2013 at 11:25 PM
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JCALDWELL
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Will scan tool work even with no check engine light being on?
Mar 26, 2013 at 11:30 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
yes, they can access the system and shift it through the scan tool.

Roiy
Mar 26, 2013 at 11:47 PM
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