2004 Chevy Impala will not go into overdrive

2004 CHEVROLET IMPALA
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MARTHADUNN1
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  • 1 POST
Transmission problem
2004 Chevy Impala 6 cyl Front Wheel Drive 70,000 miles

Have bad miles per gallon & tranny will not go into overdrive. Could this be a solenoid problem? Also had noisy fan blower; it was replaced by now takes too long to warm up
Mar 5, 2009 at 5:31 AM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
1st step is to have it scanned for codes
if tranny not shifting at the correct speeds PCM and TCM will set a trouble codes and you have to have it scanned to retrieve them code .
Code will help in pin pointing what is going on
and place to start the diagnose

blower motor
check if the fan was damaged
Mar 5, 2009 at 7:14 AM
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