Granturismo Rear Bumper Removal Guide

namaste

Member
Messages
212
I've had issues during Winter months with the parking sensors, which I fixed breifly by taking the control module in the boot apart and re-soldering some joints but the problem came back a few weeks later. I recently had a service done at Hoyle Fox Classics in Maldon (highly recommend by the way, especially if you want to see some very expensive Italian classics being worked on), and they found a fault code for the inner driver side parking sensor, so I've had the bumper off. I couldn't find a guide so here is one.

The plastic strip across the top of the bumper is hiding some of the top bolts. You need to carefully lever the clips out.

IMG_20190216_140100.jpg


The remaining top bolts are underneath the tail lights. To get at them you need to remove the interior panels, and that needs to be done in a certain sequence.

First, remove the bucket type panel by removing the two philip head screws.

IMG_20190216_140714.jpg


Next remove the two side panels held down with four allen head bolts.

IMG_20190216_141102.jpg


Be careful to collect the four washers/spacers that sit under these panels. Next remove the black plastic clips that sit over the protruding threads (three each side).

Collect your free £1 coin at the same time.

IMG_20190216_141912.jpg


Next pop off the little black plastic caps that hide some torx head screws along the back panel and on the side panels. Remove the screws, I think there's four on the back panel, and one for each side panel.

IMG_20190216_140418.jpg


Next remove the plastic covers that sit on the side of the tail lights. These are held on by three clips that easily pop out and some velcro.

IMG_20190216_140125.jpg


Remove the boot seal if you haven't already, and all the interior panels. You can now access the nuts on the back of the tail lights. Disconnect the battery if you haven't already done so and unplug the tail lights, then remove the nuts (three each tail light). Once the tail lights are removed, you can access the remaining bolts holding the top of the bumper down.

IMG_20190216_142245.jpg


Now for underneath the car. A series of bolts along the bottom, a couple holding the bottom corners of the bumper to the arch lining. And a couple holding the top corners of the bumper to the rear wing. There are also two bolts each side back inside the boot securing the top of the bumper to the rear quarter.

The bolts underneath may be seized a little so a bit of back and forth loosening tightening got mine turning. The allen head bolts on each bottom corner are likely completely seized and may need to be drilled out and replaced as I did with mine. The bolts are M6 x 16mm, M6 x 20mm washer, and an M6 chimney nut. All available cheap on ebay.

IMG_20190216_142947.jpg

IMG_20190216_142933.jpg

IMG_20190216_143004.jpg
 
Last edited:

namaste

Member
Messages
212
IMG_20190216_160537.jpg


I had the exhaust back boxes off at the time to loosen up the valves, which may have made access underneath a little easier, but you certainly dont need to remove them to get the bumper off.

IMG_20190216_162123.jpg
 
Last edited:

Thatch

Member
Messages
232
Brilliant! Coincidently, I was in the boot today trying to:
1. Find out where water is getting into the boot.
2. Trying to fix my water intolerant Reversing sensors.

I followed your previous photos to revitalise the Reversing sensor control box solder joints and see if that solves the reversing sensors instead of taking off the bumper to get at the sensors.

Looks like I will be needing these photos now too - Thanks so much for sharing!
 

namaste

Member
Messages
212
Brilliant! Coincidently, I was in the boot today trying to:
1. Find out where water is getting into the boot.
2. Trying to fix my water intolerant Reversing sensors.

I followed your previous photos to revitalise the Reversing sensor control box solder joints and see if that solves the reversing sensors instead of taking off the bumper to get at the sensors.

Looks like I will be needing these photos now too - Thanks so much for sharing!

No problem. Yeah the module was a bit of a bum steer unfortunately. As I said it worked for a while so I wouldn't be surprised if its a moisture prone connection somewhere but as the sensors are only a tenner off ebay and that one was showing at fault, I may as well go ahead and change it and see how that goes. I'll try and give all the plugs a good clean and spray with some sort of water repellant too. Hopefully that'll be the end of it.
 

Thatch

Member
Messages
232
Namaste,

Is there any chance you can post me a picture looking in the direction of the blue arrow?

I have a leak on the inside of the boot all the way along the ‘red’ joint.

I am trying to see if using a bathroom sealant on the inside join will prevent further ingress, but not sure how water gets there in the first place.IMG_E4323.JPG
 
Last edited:

Moz1000

Member
Messages
820
Many thanks for this Namaste. I have heard from Emblem that it is easier to remove the back boxes and then reach up behind the bumper to release the sensors. I haven't tried this method yet as my dodgy sensor started working again (fate tempted!). Could you provide a photo of the view of the sensors from inside the bumper please?
Thanks again, Moz.
 

namaste

Member
Messages
212
Namaste,

Is there any chance you can post me a picture looking in the direction of the blue arrow?

I have a leak on the inside of the boot all the way along the ‘red’ joint.

I am trying to see if using a bathroom sealant on the inside join will prevent further ingress, but not sure how water gets there in the first place.

Here's a pic from that direction, its just one pressed piece, no joins there. Difficult to see how water gets into that battery space. Let me know if you want more pics as the bumper will be off for a few days.

IMG_20190217_132125.jpg
 
Last edited:

namaste

Member
Messages
212
Many thanks for this Namaste. I have heard from Emblem that it is easier to remove the back boxes and then reach up behind the bumper to release the sensors. I haven't tried this method yet as my dodgy sensor started working again (fate tempted!). Could you provide a photo of the view of the sensors from inside the bumper please?
Thanks again, Moz.

You can certainly get to the outside ones with the tailpipes off, but I could just barely get my fingers to the inside one as that big rear panel in my pic above is in the way. I wasn't able to unclip the sensor or unplug it myself but Emblem might have their methods.

IMG_20190217_132009.jpg
 

Thatch

Member
Messages
232
Here's a pic from that direction, its just one pressed piece, no joins there. Difficult to see how water gets into that battery space. Let me know if you want more pics as the bumper will be off for a few days.

View attachment 54614
Cheers Namaste. That’s exactly the angle I needed, but not what I was expecting to see! The water must be getting in at a higher level.

Many thanks for doing this though.

Andrew
 

namaste

Member
Messages
212
Cheers Namaste. That’s exactly the angle I needed, but not what I was expecting to see! The water must be getting in at a higher level.

Many thanks for doing this though.

Andrew

Is it possibly just the boot seal? Something like the following? If you've got the interior panels out, brushing the area with talc as Catman suggests and looking for water lines is a good idea.

IMG_20190217_160528.jpg
 

Thatch

Member
Messages
232
Is it possibly just the boot seal? Something like the following? If you've got the interior panels out, brushing the area with talc as Catman suggests and looking for water lines is a good idea.

View attachment 54619
Don't think it's the boot seal, as it looks good all round, and there's no sign of damp on the inside of the top of the boot when I remove the lining.

I did however see it appearing at the end of your arrow (and mine), here:
IMG_E7570.JPG

but only after pointing the hose directly at that point from though the exhaust hole:

IMG_E7571.JPG
 

voicey

Member
Messages
660
You don't need to remove the bumper to change the inner parking sensors. It is possible to reach in from below and swap them.
 

Thatch

Member
Messages
232
You can certainly get to the outside ones with the tailpipes off, but I could just barely get my fingers to the inside one as that big rear panel in my pic above is in the way. I wasn't able to unclip the sensor or unplug it myself but Emblem might have their methods.

View attachment 54616
And do you think that it’s simply the ‘damp’ conditions in behind the bumper that is causing the sensors to be so temperamental and weather sensitive?
 

namaste

Member
Messages
212
I've just had another think and I see what Moz is getting at now. Yes you can probably reach into the tailpipe gap and get at them. I was underneath the car trying to reach up and around and couldn't get at them.

You don't need to remove the bumper to change the inner parking sensors. It is possible to reach in from below and swap them.

Is the above the way you do it? Or can you just unscrew the bolts underneath and push your arm up there?
 

namaste

Member
Messages
212
And do you think that it’s simply the ‘damp’ conditions in behind the bumper that is causing the sensors to be so temperamental and weather sensitive?

I really don't know. Thats why I want to get at all the wiring to give the contacts a clean and spray some repellant on them. Trying to cover all the bases in one go. The only reason I'm concentrating on the rear parking sensors is because I have the fault for rear inside driver sensor so at least I can focus in the right area. But mine worked in summer and not in winter over both of the last two years and I don't think sensors break and then fix themselves, so damp conditions must play a part. It could be damp conditions and a semi failing sensor(s).