I have a 2006 Chevy Silverado 1500 4X4 ext. cab/short bed. The 5.3l engine surges and sometimes falters (+- 150 rpm) between 30-58 mph in high gear under a slight load. There is no surging or faltering below 30 mph or above 60 mph. The local dealer could find no codes. They test drove it and said it was a front wheel hub which they replaced (500+ $$$) It still surges and falters. Any ideas? Joe

code p 0332 refers to knock sensor(KS) 2 banbk 2--low input===causes --insecure KS--poor connections ---wiring short to ground--KS incorrectly tightened---KS---ECM

Paint code should be on the label affixed to the latch end of the driver's door. Failing that, it will be shown on the option list (may be on the glove box door). Failing both of these, take your VIN number to a GM dealer and they will look it up for you.

check tranny fluid level,if good,either pump in tranny is bad or cluthces in tranny is gone bad,how many miles?

1996 Dodge Ram 3500 diesel Standard Payload, lbs.ext. cab long bed 5151, ext. cab short bed 3915, reg. cab long bed 5340, reg. cab short bed 2372.---------------------------------------------------------------------------------------
Multi-Di@g Access J2534

sounds a little like a cruise control problem.
they used to have a centering adjustment that kept the speed within a range. If the range somehow shifted to the high end this would cause your surge. it would be a screwdriver slot on the outside of the case.cw increase ccw decrease. yours is set too high or cw.
I work the screw back and forth several times in case dirt entered the cruise module.

Check the fault codes anyway. Did you do this fuel pressure testing while the loss of power was occurring? If no the test is invalid.

its right in line with fuel cap under bed

Hi

It does look like you have a 3 speed C6, if the PRND21 description is correct. If you do have overdrive, the "D" will be printed in a white oval.

Sounds like it is OK. My Mustang has a 351C with a C6 trans, and 3000 rpm is about right at 70mph.

The defining factor on the rpm will be the Differential gears, which in a truck, might very well be taller gears instead of highway gears, as the taller gears provide more power output at the axles than the highway gears do.

Example:
if you had 3.0 to 1 gears (Highway), that means that the driveshaft will turn 3 times for every complete revolution of the rear wheels(Axle)

If you had 4.0 to 1 gears, then the driveshaft would turn 4 times for every revolution if the axle. Lots of torque for pulling stumps, but on the highway. the engine will have to turn more rpm's to maintain 70 mph vs a 3 to 1.

with the 3 to 1, you will turn less rpm's on the highway, but will have less available low speed power (Torque) at the wheels.

Sounds like the truck is doing fine.

I HAVE MY ANSWER ,AND I DID NOT PLAN ON PAYING FOR IT

you should change the tps( throtal position sensor) this can cause that problem