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2006 Chevrolet Silverado engine problems: loss of power

Loss Of Power

CarComplaints.com Seal Of This Might Hurt

6.7

fairly significant
Typical Repair Cost:
No data
Average Mileage:
35,333 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (3 reports)
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2006 Chevrolet Silverado engine problems

engine problem

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2006 Chevrolet Silverado Owner Comments

problem #3

Dec 272008

Silverado 2500 HD LS 6.0L

  • Automatic transmission
  • 49,000 miles

A D V E R T I S E M E N T S

I have a 06 silverado with a 6.0 that won't pull , It didn't have this problem when I first bought it but once it started I haven't been able to find a fix. I have been thinking its a motor power problem maybe transmission. when I am not pulling anything to go up hill and try to keep a speed between 50 and 70 is impossible to hold the pedal in one place speed quickly falls off, from there I have to punch it it shifts into passing gear and if I put it in cruise it will hold the speed but it will shift up and down the whole way. To pull a local hill with my sport quad I only get 6 MPG can only do 55mph completely punched and it shifts in and out of passing gear very frequently. I am a mechanic and have done all the basic matinenance and still no fix. Talk about a gutless truck.

- , Magna, UT, USA

problem #2

May 012008

Silverado 2500 HD LS 6.0L

  • Automatic transmission
  • 45,000 miles

I have an 06 Silverado 2500 with the 6.0. I have taken it to dealerships to several local shops and no one can tell me why I have a hard time pulling one sport four wheeler. When I first got it I could pull anything and still get decent mileage. now best 6 MPG with my one wheeler...Before this I got 14 MPG and 11 or so while pulling now 12 at best and 6 MPG while pulling ANYTHING. I have been told my converter is not plugged, I have done a tune up. Its ridiculous I even put a aftermarket intake on it and it actually made it worse. The first five minutes I could tell a great difference but then the computer changed the settings and it mad the power even worse. My next step is to get a programmable chip to see if that fixes it.

- , Magna, UT, USA

problem #1

Aug 302007

(reported on)

Silverado LT3 5.3L

  • Automatic transmission
  • 12,000 miles

paid the extra money for the bigger motor, truck runs like a 4 cyl. will not kick down after 70 mph,

2006 5.3l does not run comparable to previous years 2000-2004's

truck feels very sluggish and takes forever to get up to freeway speeds.

- , Pleasanton, CA, USA

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