3500 vvt low oil pressure light on

[j95z]

Hey has any1 had this problem? I know they are new engines but just curious to see. My friend just bought 06 uplander has 371 miles and dealer doesnt seem to know the fix. they have changed computers oil pressure sensor and havent figured it out yet. Any ideas? Also has any had any other problems yet w/ theis engine. Thanks in advanced !

[Guest]

Have they checked the actual oil pressure?

Sounds like there might be a vvt engine available soon.

[j95z]

they did check oil pressure they said its fine (btw engine is not vvt its just regular 3500 sorry thats what my friend had told me) they told him it might be instrument cluster. any1?

[bszopi]

If it only has 371 miles on it, it is well within the warranty, so the dealership should be finding the problem and fixing it no matter what. If they suspect the cluster, then I would say they should replace the cluster to find out.

If anything, it might just be a pinched wire from the sensor to the cluster, or to the BCC, PCM, or whatever route the sensor wire goes.

[Guest]

If it only has 371 miles on it, it is well within the warranty, so the dealership should be finding the problem and fixing it no matter what. If they suspect the cluster, then I would say they should replace the cluster to find out.

If anything, it might just be a pinched wire from the sensor to the cluster, or to the BCC, PCM, or whatever route the sensor wire goes.

Agreed.

[SHOoff]

Apparnetly those damn Tech tools that they have at the dealer to hook up to your car has just made people WAY too lazy. Sounds about time to bust out the DMM and mess around in there.

[v6h.o.]

Tell your buddy to get his vehicle to the d'ship asap. There is a Preliminary bulletin about the Oil pumps missing a plug in them.

Make sure its the right engine code that applies to this however:

Low Oil Pressure Light/Gauge - keywords 3.5 3.9 cup gage left low LZ4 LZE LZ9 plug #PIP3662 - (Dec 21, 2005)
Low Oil Pressure Light/Gauge

2006 Buick Terraza

2006 Chevrolet Impala, Monte Carlo, Malibu, Uplander

2006 Pontiac G6, Montana SV6

2006 Saturn Relay

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:

Low oil pressure in left hand turns. Usually occurs after vehicle has accumulated some mileage, but generally seen before 10,000 miles have accrued on vehicle. Condition only occurs when making left hand turns.

Engine oil pump may have a loose/missing cup plug in the pump body. During left hand turns, oil will move away from the pump body, exposing the open hole in the pump body and causing the low oil pressure concern.
Recommendation/Instructions:

1. Verify engine oil is at proper level.
2. Duplicate condition and verify low oil pressure.
3. Remove oil pan and inspect oil pump body for missing cup plug. Location of plug is given in the below picture.


Object Number: 1745785 Size: MF
Click here for detailed picture of above image.

Object Number: 1745787 Size: MF
Click here for detailed picture of above image.

1. Inspect pump plug as indicated in above picture. If plug is missing, damaged or cocked, replace engine oil pump. Make sure to remove cup plug from engine oil pan before installing oil pan on vehicle.
2. GMPT Engineering has requested the WPC to return all replaced pumps for inspection until further notice.

Note: Make sure the cup plug is returned with the pump assembly if it was found in the oil pan

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

[j95z]

thanks for the help guys. I have passed this on to my friend so well see if dealer checks this. I usually occurs just during start -up and goes away and the last few days it only has come once or twice. Thanks again, i'll keep you guys posted!