Front End Creaking/Popping Noise

[L36 SS]

Whenever I accelerate quickly from a stop, go into reverse or turn, there is a creak or pop noise coming from the front. It has new GR2 struts with new strut mounts, GMPP sway bar and new end links, new control arms etc. It's a 02 Monte Carlo SS as well with the aluminum sub frame. Anyone ever experience a noise like this it's driving me crazy chasing down what it could be. Thanks in advance

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[vyper144]

I put GR2 struts, SSC lowering springs, and some RockAuto or OReilly mounts in my car last May and I get a popping noise whenever I turn.

 

[b4black]

Make sure the two braces from the fenders to the core support are tight. I had a loose one that popped and drove me nuts for a long time.

Take them off, go for a short drive and see if the popping goes away.

 

[SaturdaysGS]

I've got a similar or the same issue and damn is it annoying! I've got a recently changed motor mount (6-7k ago)the trans mount is poly the upper dog bones aren't all that old (5k maybe?) either and I have poly blocks. I do have an axle that I think is shitting the bed and either a bad LF strut or upper mount, but I don't believe those to be the issue... I'm open to suggestions. Hopefully changing the axle soon and figuring out my strut/mount issue.

 

[L36 SS]

Yea i've got new trans/motor mounts and upper poly dog bone mounts. I was reading online and some people say the bolts on the aluminum subframe get loose and to check them.

 

[SuperDaveGSE]

I have an 01 Impala, I had the same thing going on. When I had to swap the trans, I dropped the sub frame and found that the rear metal bushing spacer thing was broken in two. I replaced that and the sound went away, I'd drop the rear part of the sub frame and inspect those. Maybe you'll find the same thing happened with yours.

 

[SaturdaysGS]

I have an 01 Impala, I had the same thing going on. When I had to swap the trans, I dropped the sub frame and found that the rear metal bushing spacer thing was broken in two. I replaced that and the sound went away, I'd drop the rear part of the sub frame and inspect those. Maybe you'll find the same thing happened with yours.

Sounds like it could be possible. The rear of my subframe was dropped before to change the PS rack. Ill have to check that out on a two post rack.

 

[slowchevy]

subframe bushings.

buy 4 new bushes and 4 new bolts as they're torque to yield.

do one at a time in your driveway.

 

[L36 SS]

Are the bushings a GM only part and how much do they go for? I have to get new bolts also?

 

[slowchevy]

you can get them from other brands, i'd go with GM though so you know it's quality.

the bolts are torque to yield, so they're one time use. aka what's in the car gotta be thrown out if you loosen them to do the bushes.

 

[SuperDaveGSE]

Find monte carlo ss bushings if you can, they should be white they are firmer then the rest. Also you can reuse the bolts, I have planty of times with nothing happening.

 

[L36 SS]

Do the bushings need to be pressed in? Also can this be done with hand tools one at a time? What torque specs do the bolts take?

 

[slowchevy]

Find monte carlo ss bushings if you can, they should be white they are firmer then the rest. Also you can reuse the bolts, I have planty of times with nothing happening.

they are torque to yield. it's risky and not worth it when the bolts themselves are cheap. i can't believe you'd gamble your safety or anyone else in your car for a few dollars

 

[RICH17]

Just locktite them

 

[Turbocharged400sbc]

this is for an 04 with the tighter spec, tell me if that sounds like TTY

1. Loosely install the bolts to secure the front frame to the body.
2. Align the frame to the body by inserting two 19 X 203 mm (0.74 X 8 in) pins in the alignment holes on the right side of the frame. Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the front and rear frame bolts. Tighten the bolts to 180 N.m (133 lb ft).
4. Install the drivetrain reinforcements using the following procedure:

1. Position the drivetrain reinforcements to the font cradle mount stud to the support brace.
2. Loosely install the drivetrain reinforcement to support brace bolts.
3. Install the drivetrain reinforcement to cradle mount nut.