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2002 gmc blazer trans disengaged when driving


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dsmith1960
Novice

Jan 28, 2017, 10:56 AM

Post #1 of 8 (263 views)
  post locked   2002 gmc blazer trans disengaged when driving  

2002 chevy blazer engine replaced recently w salvage engine unknown miles the problem I'm having is @ 50mph or so the tyranny acts like it is going in neutral for just a split second it only happens once in a while and sporadically sometimes it doesn't do it at all I drive to work only about 15 miles per day all highway very little start/stop it also only works in 2 wheel drive which is fine just letting u know in case it may have some relationship to trans issue


kev2
Veteran
kev2 profile image

Jan 29, 2017, 11:59 AM

Post #2 of 8 (212 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

this is a blazer 4.3L.?
Did you scan for codes? scan even if CEL is off. Post ALL codes someone will advise.


dsmith1960
Novice

Jan 29, 2017, 5:02 PM

Post #3 of 8 (198 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

Thanks Kevin. Sorry about my ignorance. Don't know what Cel Is. And I did not run the codes and not sure how to do it


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jan 29, 2017, 5:54 PM

Post #4 of 8 (193 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

"CEL" means Check Engine Light. There can be codes there even if not staying lit. You don't run them try if a place like Autozone commonly does them for free or pay for a high end code reading. The reader you need it really too costly for a one time deal - thousand$,


T



dsmith1960
Novice

Jan 30, 2017, 2:47 AM

Post #5 of 8 (185 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

Thanx Tom I will check codes Monday afternoon[reply


dsmith1960
Novice

Jan 31, 2017, 1:56 PM

Post #6 of 8 (156 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

What should I expect to pay for a high end reading from a garage


kev2
Veteran
kev2 profile image

Jan 31, 2017, 2:13 PM

Post #7 of 8 (150 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

try the free scan - most auto parts stores do as a free service to sell parts. try it free !! get codes and post here.


If you are not doing any work yourself - often scanning is included with the repair - the nominal charge would be @100 -150$ just for scan


dsmith1960
Novice

Jan 31, 2017, 2:55 PM

Post #8 of 8 (144 views)
  post locked   Re: 2002 gmc blazer trans disengaged when driving  

Thanx kev and Tom great info






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