Transmission

Tiny
BABYGIRLKBALLARD
  • MEMBER
  • 1997 CHEVROLET BLAZER
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Hi, my boy friend just replaced the water pump in my vehicle and now it will not shift past thirty five mph. I wanted to find out if it is possible something got disconnected somehow while he was changing it or if it is a coincidence and that transmission needs to be replaced?
Wednesday, November 29th, 2017 AT 1:25 PM

4 Replies

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
I do not see anything in the water pump instructions that would affect the transmission.
Just because it does not shift does not always mean the entire transmission needs to be replaced.
I would start by checking the fluid level and if there are any trouble codes stored in the PCM or the TCM referring to the transmission.
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Wednesday, November 29th, 2017 AT 2:34 PM
Tiny
BABYGIRLKBALLARD
  • MEMBER
  • 2 POSTS
When he did check the fluid it he said it was low to none. Does the truck have to be taken somewhere to get those codes?
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Wednesday, November 29th, 2017 AT 2:59 PM
Tiny
BABYGIRLKBALLARD
  • MEMBER
  • 2 POSTS
Do you know what all the possible reasons for it not shifting past thirty five mph could be? I forgot to mention that it does that in overdrive but if shift to drive it runs better.
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Wednesday, November 29th, 2017 AT 3:00 PM
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
It could be a solenoid in the transmission causing it. Did he get the fluid back up to normal?
I believe places like Autozone, Advance auto, will retrieve those codes for free.
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Wednesday, November 29th, 2017 AT 3:59 PM

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