GM Latest fix for ticking sound 2.0L

Venice · Jul 24, 2009

#09-06-01-004: Clicking/Ticking Sound/Noise Heard from Rear of Engine (Install Sound Isolation Cover Over High Pressure Fuel Pump) - (Apr 1, 2009)

Subject: Clicking/Ticking Sound/Noise Heard From Rear of Engine (Install Sound Isolation Cover Over High Pressure Fuel Pump)

Models: 2008-2009 Chevrolet Cobalt, Cobalt SS, HHR, HHR SS

2007-2009 Pontiac Solstice GXP

2007-2009 Saturn SKY Redline

2007-2009 Opel GT

2007-2009 Daewoo G2X

Equipped with 2.0L Engine (VIN X -- RPO LNF)

--------------------------------------------------------------------------------

Condition
Some customers may comment on a ticking sound from the rear of the engine. Upon investigation, the technician may find the sound coming from the high pressure fuel pump and/or the injectors.

Cause
The 2.0L turbo engine (VIN X - RPO LNF) uses a direct injection fuel system that operates at very high fuel pressures. A direct injection fuel system produces a rapid, clicking/ticking sound that can be heard from the engine compartment. The sound is more evident when outside around the vehicle or when the hood is open. The sound is more noticeable during idle, and is more frequent during a cold start but lessens once the engine is warm. The rapid ticking noise on cold start up is the fuel pump (located on the rear of the cylinder head) building up high fuel pressure. When the engine warm-up is completed, the high pressure fuel pump will continue to tick at a lower rate of approximately one tick per second during idle. The clicking sound is the fuel injectors pulsing on and off under higher fuel pressures. These sounds are the results of a normal direct injection fuel system operating properly.

Correction
Install a sound isolation cover over the high pressure fuel pump following the procedure below. This will make the sound coming from the high pressure fuel pump less noticeable, but it will not completely eliminate it.

Important: DO NOT attempt to replace any parts for this kind of clicking or ticking concern.

Verify the noise is coming from the high pressure fuel pump.
Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in SI.
Disconnect the engine wiring harness electrical connector from the high pressure fuel pump.
Remove the engine wiring harness from the high pressure fuel pump cover bracket.

Remove the high pressure fuel pump cover bolts (1).
Remove the high pressure fuel pump cover bracket.

Remove the old design cover and install the new high pressure fuel pump insulator, GM P/N 12628069.
Position the high pressure fuel pump cover bracket. Install the high pressure fuel pump cover bolts.
Tighten
Tighten the bolts to 10 N·m (89 lb in).

Connect the engine wiring harness electrical connector to the high pressure fuel pump.
Attach the engine wiring harness to the fuel pump cover bracket using a zip tie.
Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in SI.
Parts Information
Part Number
Description
Qty

12628069
Insulator/PMP
1

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

J7814*
Install Isolation Cover on Fuel Pump
0.7 hr

*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.

This is the same as in February Thread.

tazz · Jul 24, 2009

Great thanks for the info. Have printed out for my dealer.

08 Deep GXP

Speedhawg · Jul 24, 2009

It doesn't help much, I did it 6 months ago. Pretty much a waste of time and $12 for the part.

Sly Bob · Jul 24, 2009

Don't tell me that!! :lol: Just ordered the part today and they said that I would likely have it tomorrow so I could put it in. I would have taken it to the dealer to get it done but for the cost of the part, I would rather do it myself.

WifesGXP · Jul 24, 2009

Post up a picture of said part if you can, thanks.

LiquidPT · Jul 24, 2009

You mean like this thread from Feb?

http://www.solsticeforum.com/forum/f43/gxp-noise-abatement-54658/

kwtoxman · Jul 24, 2009

No...... who'd have thought there was a very old thread on this already....

joshmass · Jul 24, 2009

:thumbs: got a chuckle out of that one.

Although if you don't know what's causing the noise it does make it harder to search for the solution. I submit the infamous "squeaking noise" as an example.

Morfious · Jul 24, 2009

The isolater does not totally remove the sound, but it does decrease the harshness of it. I have noticed a bit less of the high frequency ticking sounds after installing the part. I feel it's well worth the $12.

Sly Bob · Jul 24, 2009

$17 for me in Canada but yeah, I don't expect it to get rid of it 100%. It doen't even bother me as it is now. I just figured for $20, what the hell!

AdamVIP · Jul 24, 2009

I did this switch a while ago and it does make a difference. You can still hear it pretty clearly but its much softer, especially from the drivers seat.

Oceanwave · Jul 25, 2009

When my HP pump failed under warranty the dealer installed kit free of charge to make up for the one week wait for part. It actually does reduce the ticking considerably. However with top down or music on I hardly noticed it any way.

Treeman · Jul 25, 2009

The bulletin indicates at the bottom how to make this a warranty thing. So I am going to waive this in my dealer's face next time I'm in and get them to do it under warranty.

Small Dealer · Jul 25, 2009

Treeman said:
The bulletin indicates at the bottom how to make this a warranty thing.

The bottom doesn't make it anything.

All it does is show the coding for this repair claim submission, if it is performed on a car with warranty coverage still in force as a warranty repair.

achieftain · Jul 25, 2009

Actually since this is considered normal operation if anyone can get it covered under warranty they should consider themselves lucky. Especially since the government is no longer backing any warranties.

Radio Doc · Jul 28, 2009

achieftain said:
Especially since the government is no longer backing any warranties.

Huh?

I think I must have missed something, cuz the last I heard, the gummint WAS backing the warranties.

:huh:

tazz · Jul 25, 2009

My dealer ordered the part fri. they will put it in. if it helps a little come winter I'll be happy.

08 Deep GXP

Speedhawg · Jul 27, 2009

Some pumps are louder than others, mine was loud, it died maybe that's why it was so loud. I am hoping the new one will be quieter. I really didn't notice much of a difference, I just turned up the radio.

bradyb · Jul 27, 2009

A bunch of us did this install when we found out that the Opel GT came with the part. I installed it on my car and did notice a difference. The injection-molded rubber insulator is a much better part then the compressed fiber cover that comes stock. You will still hear the ticking but it will reduce the sound by maybe 40%? The sound will still travel out from the fuel lines and block.

Sly Bob · Jul 28, 2009

They stopped backing them the other day.

Google...

Squirrel Boy · Jul 28, 2009

"Especially since the government is no longer backing any warranties."
are we talking about our "bumper to bumper thing"?

Sol-Mates · Jul 29, 2009

The government won't back them because GM is now able to back them on their own since coming through bankruptcy and paying back the loans. Should be no change for us.

Lithium Lotus · Aug 2, 2009

If it makes noise, then it's still working

duckSol · Aug 5, 2009

I just tell people if they notice it that it's the HIGH PERFORMANCE fuel pump.

Then if they talk trash,:devil:
'same one Ferrari uses on the twelves cept ours is a 4 cylinder and takes only one so dothemath' :jester:

:huh:

imagine the freakin noise 4 of those pomps would make and this car costs a helluva lot LESS :glol:

SolNut · Aug 6, 2009

Who/whom synchronizes the pumps? :banghead: And what does it co$t? :cryin: <GRIN>

Steve

duckSol · Aug 13, 2009

SolNut said:
Who/whom synchronizes the pumps? :banghead: And what does it cos? :cryin: <GRIN>

Steve

I hopes it don't cost az much sum uva sinckronizin these nu televisonz

tazz · Aug 12, 2009

Dealer did this under warranty, ticking hardly noticable at all. will see come winter when its at its worst. but I am pleased with the out come. my dealer didnt know about the fix until I told them and they ordored the part and had it fixed within the week.

08 Deep GXP

GXP09 · Aug 15, 2009

If it's a normal engine sound then it sounds good to me.

CrateEngineDepot · Aug 20, 2009

Fuel Pump cover.

It looks like your talking about this:

Link

GaryDN · Sep 30, 2009

had the Sound Isolation Cover installed today while I had my first oil change done. Made a big difference in the level of the sound. Much better now and I had my oil change, got my car back clean and in perfect shape

SaturnSkyDude · Sep 30, 2009

I had mine installed under warranty last week and it seems a lot quieter to me. :jm2c:

GM Latest fix for ticking sound 2.0L

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