4.0

definitely annoying
Typical Repair Cost:
No data
Average Mileage:
30,000 miles
Total Complaints:
1 complaints

Most common solutions:

  1. turn off car and restart (1 reports)
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problem #1

Mar 102006

Blazer LS 4.3L

  • Automatic transmission
  • 30,000 miles

After a high speed run on the Interstate, the trans start shifting hard. When trans starts shifting hard, Ch Eng light comes on. Code reader shows Code 1825, with no explanation. Again, when engine is shut off and restarted, trans resumes shifting as it should. On older cars this happened when the vacuum modulator valve failed. If this car has one, I can't find it. Any Ideas?

- mack99, Bradenton, FL, US

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