05 Sierra 2500 Hd

[bigwhitesierra]

05 Sierra 2500 HD.....38,000 miles

 

Notice an intermetent power loss from engine when A/c is on. Almost sounds like an air leak. Noticed same thing last winter when I would have the plow on and was driving from site to site. Hard to describe....

 

Happends for about 3 seconds....goes away for a min maybe....then comes back....

[Killerbee]

05 Sierra 2500 HD.....38,000 miles

 

Notice an intermetent power loss from engine when A/c is on. Almost sounds like an air leak. Noticed same thing last winter when I would have the plow on and was driving from site to site. Hard to describe....

 

Happends for about 3 seconds....goes away for a min maybe....then comes back....

 

sounds like it might be turbo vane sensor, or MAP sensor issue. Get some codes.

[bigwhitesierra]

Just checked for any codes.....nothing coming up.

 

 

05 Sierra 2500 HD.....38,000 miles

 

Notice an intermetent power loss from engine when A/c is on. Almost sounds like an air leak. Noticed same thing last winter when I would have the plow on and was driving from site to site. Hard to describe....

 

Happends for about 3 seconds....goes away for a min maybe....then comes back....

 

sounds like it might be turbo vane sensor, or MAP sensor issue. Get some codes.

 

[bigwhitesierra]

not sure if the 2 could be related (trust me, im no mechanic)....its had an intermetent squeak (thought to be belt). has gotten more prevelant lately

 

 

Just checked for any codes.....nothing coming up.

 

 

05 Sierra 2500 HD.....38,000 miles

 

Notice an intermetent power loss from engine when A/c is on. Almost sounds like an air leak. Noticed same thing last winter when I would have the plow on and was driving from site to site. Hard to describe....

 

Happends for about 3 seconds....goes away for a min maybe....then comes back....

 

sounds like it might be turbo vane sensor, or MAP sensor issue. Get some codes.