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Chevrolet/noise at 30 mph

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Question
Hi,Roger thanks first off for this site. I have a 2001 Chevy Silverodo HD 1500 2WD. When driving thru town only at 30 mph you can here a noise coming from what seems to be the mid section of the truck. The noise of course is hard to explain but seems almost like a gurgle more than, say clunks & clangs. I am 100 % sure it is not a engine related noise. When in nuetral you can rev. the engine and everthing sounds great. lastly i would like to mention the car never makes this noise at any other speed, except occasionally in drive from idle to 5 mph. Thanks Rich.

Answer
Hi  Rich ;
        I wonder if it only makes the sound when you go 30, do not go 30 OK.lol no only kidding- I wonder if it could be from the  cat. converter . as you say no engine sounds . have you looked under there for any wear marks or loose part etc. I have a 99 silverrodo 4x4 and that makes some sounds. I would go under and give a good look ./ see if the   return tank looks ok.

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Roger J.M. Warrington

Expertise

I can help you with most standard type things from 1955 chevys up to around 1975 (1975)>> chevys in differnt areas. engine work heads-cams-trannys-drive train-brakes-some elect. dos and donts. PS UP TO 1975 !! !!!!!!!!!!! I will try with any others after that date. state up to 1975 but I still get 2006-007 etc. I guess you do not read this far ! !

Experience

All i can remember growing up is working on cars and making them loud and fast , and when i started to make money i would sink all of it into my cars so i could get them to go faster and look great. what else is there !I would love a challange to trouble shoot, as it is fun finding what is wrong when all others can not .ON the older cars not past 1975s , etc. so please I will try to help with the newer cars but do not grade me bad if I can not help your 2006 car.etc.

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