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2007 chevy trailblazer LS 4.2 2wheel drive ..........engine…

Customer Question
2007 chevy trailblazer LS...

2007 chevy trailblazer LS 4.2 2wheel drive ..........engine is all warmed up....normal rpm's........go to accelerate and RPM guage rises 2000...but vehicle does not want go faster nor seem to shift.....after couple minutes it returns to normal function again.....tranny fliud checks ok......no recent engine work has been done.....no code when I put on my reader......runs fine other wise....166700 miles.....normal maintence -air filter,oil changes etc have been done...owned for 41/2 years......curious as to cause

Mechanic's Assistant: When was the last time your transmission fluid was checked? Changed?

Checked yesterday.....changed 90,000

Mechanic's Assistant: Are you fixing your Trailblazer yourself? What have you tried so far?

Yes, at least at this point......checked today for any leaks, top and underneath, ran engine and pulled covers/resonator off.....just generally checking for anything amiss ....

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not that I can think of

Submitted: 7 months ago.Category: Chevy
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Answered in 3 minutes by:
12/3/2017
Chevy Mechanic: Gunvir Singh,
 replied 7 months ago
Gunvir Singh
Category: Chevy
Satisfied Customers: 2,013
Experience: Master Tech at Kennesaw Auto Tech
Verified

Hello, let me review your request. Please stand by.

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Chevy Mechanic: Gunvir Singh,
 replied 7 months ago

Does the engine sounds louder when you accelerate?

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Chevy Mechanic: Gunvir Singh,
 replied 7 months ago

Have you checked the electronic fan clutch?

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Customer reply replied 7 months ago
no thanks.......
Chevy Mechanic: Gunvir Singh,
 replied 7 months ago

No thanks??

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Customer reply replied 7 months ago
checked fan clutch
Chevy Mechanic: Gunvir Singh,
 replied 7 months ago

How did you check it?

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Customer reply replied 7 months ago
no related fan codes or cel......fan turned with resistence..no noise
Chevy Mechanic: Gunvir Singh,
 replied 7 months ago

This fan is controlled by an electronic module and has to be checked with activating different with a scan tool. You can also check the fa clutch module data at time when the issue occurs. The symptom you are experincing is usually caused by a failing fan clutch assembly.

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Chevy Mechanic: Dan, ASE Certified Technician replied 7 months ago
Dan
Dan, ASE Certified Technician
Category: Chevy
Satisfied Customers: 2,113
Experience: Auto Technician
Verified

Different expert here, Do you still need help?

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