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1994 GMC C1500 overdrive issue?

Tiny
DEAKINS13
  • MEMBER
  • 1994 GMC C1500
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
When im going down the road at about 60 my rpms are at 2500 is that normal it seems high to me theres also a stuttering issue every now and then that after reading some other posts on this site I think is the egr valve. Please help
Monday, June 1st, 2015 AT 9:44 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a trans guy scan for codes and check trans your overdrive unit may not be working.
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Tuesday, June 2nd, 2015 AT 6:34 AM
Tiny
DEAKINS13
  • MEMBER
  • 2 POSTS
Just tried to run the codes and my truck is not responding is what the computer says is there another way I can check
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Tuesday, June 2nd, 2015 AT 8:18 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Well it should run about 1800 or so at that speed unless it' has a higher gear ratio there are pressure checks that can be done but most trans guys can drive it and tell you what is wrong.
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Tuesday, June 2nd, 2015 AT 9:22 AM

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