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[Web Creator] [LMSOFT]
VT Commodore Body Issues
Phoenix Mechanical
Soaring

Dash and Body noises

1. Early VT's seem to suffer a great deal from creaking noises from either the dash, door pillar area or the front foot well area. Most noises are due to insufficient tolerances between chassis frame panels, like those in the door pillar area next to the dashboard.

2. One area is the front chassis braces that connect between the firewall and chassis rails. The brace's attaching nuts may become loose, and must be tight to reduce the chance of movement (especially over rough surfaces) (30 – 35 Nm).

3. Some VT dash panels make a crack noise when the interior begins to cooling down after being parked in high sun load or when heating up a cold vehicle interior. A cause for this can be expansion and contraction of the dash panel mounting points. Revised screws with polypropylene washers were introduced mid 2000.

Instrument Panel Retaining Screw - Part number 92138601

These screws can be used in the top demister vent ends, and the side dash vent covers.

Windscreen Mouldings - Many early VT's have badly distorted windscreen rubber mouldings, usually from heat. New rubbers are usually required, and need to be PVC cemented (front) or Urethaned (rear) into place. If the front windscreen is to be removed, care must be taken to ensure that the wiring for the remote receiver module (located at the front lower edge of the windscreen, on the dash) is not damaged. The rear windscreen must also be removed to correctly replace the seal.

Rattling Drivers window - Some VT's with manual windows may rattle when the window is down and the door is closed. This is usually a result of the glass hitting the window regulator. To overcome this, 2 washers are added to the lower points of the window regulator mounting points, which alters the angle of the regulator and increases the clearance between the glass and regulator when the window is down.

Scratched Drivers window - Some early VT's suffer from fine scratches on the driver's window, as the window comes into contact with the belt mould clips (the rubber that sits against the bottom of the glass, on the edge of the door skin). Modified clips were introduced in late 1997.

Tailgate Glass moulding - Some early VT wagon's rubber moulding around the rear tailgate glass, detaches from the glass along the lower edge. In this situation, the rubber will need to be re-glued to the glass. In mid 1997, the production process was revised.

Water drainage from doors - Some VT's retain water in the doors (after washing or heavy rain), until the door is opened. The most common cause is the door drain holes are being covered by the rocker panel seal. In standard form, the inner edges of the doors have solid hole grommets (SP3341). These can be changed to a revised grommet (92076830), which have a 5mm hole to aid door drainage. It is also suggested that the rear door belt mould and 1/4 window pillar edge be sealed, to help reduce the amount of water that can enter into the rear doors.

Door creaking / wind noise / water leaks - VT doors have a adjustable window stop (located at the top of the rear pillar on front doors, and top of the front pillar on rear doors), and can be used to help rectify wind noise, creaking or water leaks. The door frame seal is also an area that can cause creaking, as it rubs against the door frame opening. Revised door frame seals have an extra felt strip along its edge to help reduce creaking.

Door mirror wind noise - Some VT's may have excessive wind noise from the rear view mirror area, mainly when driving at highway speeds. A 1 piece mirror seal was introduced early in 1998 which helps reduce wind noise from the mirror area.

RH mirror seal - Part Number 92141794

LH mirror seal - Part Number 92141795

Inner cover clip - Part Number 90459628

Inner Door Dust Seals - Early VT's may suffer from water entry into the vehicle from inadequate sealing of the inner door dust seals. The sealant pattern was revised in mid 1998.

Door Handles - Some VT's have door handles (not kidding) that require extra effort to open. In many cases the door handle operating rod is incorrectly adjusted. The mechanism should also be lubricated.

Rear Doors jamming - Quite often the rear doors will not open when the exterior door handle is operated and/or excessive force is required to operate the door handle. The door handle may also feel notchy in operation. These conditions may be caused by incorrect adjustment of the door handle connecting rod, and/or excessive friction within the door lock assembly. GMH have revised the door handle connecting rod as from 08/04/98, and suggest lubrication.


Boot Lid Water Retention - Some VT's have a nasty habit of collecting water in the rear garnish panel, and when the boot lid is opened, the water empties into the boot area (or on your head). A common cause is the washers that go between the garnish panel and boot lid. These need to be resealed to help prevent water entering into the boot lid.

Top Deck lamp seal - Part number 92081490

Deck Lamp Moulding seal/insert kit (with revised upper and lower garnish panel) - Part number 92142403

Water may also enter the boot area from an aged or defective boot spoiler mounting gasket.

S Pack Spoiler to Boot lid Gasket – Part number 92144151

Lumina Spoiler to Boot lid Gasket - Part number 92144153

SS Pack Spoiler to Boot lid Gasket – Part number 92144150

Rear Bumper Paint Damaged by Boot lid - Revised boot lid bump stop rubbers were introduced mid 1999, to help reduce the chance of the boot lid over closing, and wearing the paint away on the top edge of the bumper bar. In mid 2000, a revised rear lower boot panel was introduced to increase the clearance between the bumper and boot lid.

Adjustable Boot Lid Bump Stops - Part number 92088910

Lower Decor Panel assembly - Part number 92094365

Boot Spoiler - If an after market boot spoiler is fitted to a VT that did not have a boot spoiler fitted from factory, weight rated boot struts should be fitted to help hold the boot up.

Boot Struts to suit S or SS type spoiler ( up to 3 Kg) - Part number 92081251

Boot Struts to suit HSV Senator type boot spoiler (up to 5.4 Kg) - Part number 92047962

Side Skirts (S and SS) - Some VT's may develop a sliding type noise under heavy braking or acceleration. A possible cause can be stones or road debris inside the side skirts. A suggested fix for this issue is to make 2 rubber flaps/guards and screw them in place in the rear wheel arch area, covering any entry points to the side skirts.

Petrol Flap - Apart from not sitting flush against the body, or distorting, some petrol flaps fail to open when the inside lever is pulled. A cause of this can be the petrol flap seal sticking to the body, which prevents the door from opening. In these situations, Solid oil can be applied to the petrol flap seal to help prevent sticking.

Solid oil - Part number M33028

Water Leak at Centre Pillar - The top door frame rubber seals end just below the glass line at the rear edge of the front doors, and the front edge of the rear doors. If the end caps of the door frame rubbers become pinched, this may allow a path for water to track inside the vehicle. Revised end cap slips were introduced mid 1999.

RHF End Cap Clip Assembly - Part Number 92087550

LHF End Cap Clip Assembly - Part Number 92087551

RHR End Cap Clip Assembly - Part Number 92087552

LHR End Cap Clip Assembly - Part Number 92087553


Water leak Wagon (rear) - Water may leak into the rear compartment area from the rear side glass, as the seal fatigues. Revised seals were introduced early 1999, and are more compression resistant.

Door creaking / wind noise / water leaks - VT doors have a adjustable window stop (located at the top of the rear pillar on front doors, and top of the front pillar on rear doors), and can be used to help rectify wind noise, creaking or water leaks. The door frame seal is also an area that can cause creaking, as it rubs against the door frame opening. Revised door frame seals have an extra felt strip along its edge to help reduce creaking.

Door mirror wind noise - Some VT's may have excessive wind noise from the rear view mirror area, mainly when driving at highway speeds. A 1 piece mirror seal was introduced early in 1998 which helps reduce wind noise from the mirror area.

RH mirror seal - Part Number 92141794

LH mirror seal - Part Number 92141795

Inner cover clip - Part Number 90459628

Inner Door Dust Seals - Early VT's may suffer from water entry into the vehicle from inadequate sealing of the inner door dust seals. The sealant pattern was revised in mid 1998.

Front Door Belt Moulds - Some front door belt moulds have been seen to split or tear prematurely. This is mainly caused by door over slam, which is a natural occurrance when closing the doors (The door travels past its normal stationary position). GMH have revised the door belt moulds as from 25/02/00


Series I Exec Sedan and Wagon up to vin # L560628 - Part numbers RH 92093952 and LH 92093953

Series I Berlina Sedan and Wagon up to vin # L464494 - Part numbers RH 92093952 and LH 92093953

Series II Berlina Sedan from vin # L464495 to L560628 - Part numbers RH 92093954 and LH 92093955

Series II Berlina Wagon from vin # L464495 to L560628 - Part numbers RH 92093952 and LH 92093953

Series I Calais up to vin # L464494 - Part numbers RH 92093954 and LH 92093955

Series II Calais from vin # L464495 to L560628 - Part numbers RH 92093956 and LH 92093957

Check Links - A check link is a spring loaded arm inside the door that pivots between the door and door pillar, and holds the door open. When VT check links become stiff, they can damage the bracket that is welded to the body. If this is damaged, you will need to pay a visit to your local crash shop, and have a new one welded in place and painted. The check link can also clunk during door opening, which is mainly caused by a worn plastic washer that is located on the check link arm where it is bolted to the pillar. New washers are available from GMH.

Door Check link bolt - Part Number 09116434 (14nm torque tightening tension).

Number Plate Rattle - Four screws are required to mount each registration plate securely, as only 2 may allow the plate to rattle.

Tow Bar Tongue Rattle - The towbar tongue of a factory 1600Kg or 2100Kg tow bar may rattle when there is no towing load. This rattle is caused by free-play between the tow bar tongue and tow bar main tube. An anti-rattle screw and nut was introduced to reduce free-play.

Tow Bar Anti-Rattle Screw - Part number 11078491

Tow Bar Anti-Rattle Nut - Part number 92138590