Gmtu turbo upgrade to be installed in central NY ?'s
07-02-2012, 08:24 AM
#32
Senior Member
Thread Starter
Join Date: 10-19-2011
Location: N.Y.
Posts: 1,553
Xtreme I agree
In the instructions it shows a separate # for the reflash.
however Tom at crate engine depot says he never heard of this.
He believes the tech calls gm and based on the Vin they reflash it that way.
Maybe gm was not aware of the vacuum pump being added?
As far as the boost drop off Tom thinks maybe the wires are too tight and they are being pulled and the tmap is being pulled out creating a leak?
Still waiting for my local dealer to call back.
In the instructions it shows a separate # for the reflash.
however Tom at crate engine depot says he never heard of this.
He believes the tech calls gm and based on the Vin they reflash it that way.
Maybe gm was not aware of the vacuum pump being added?
As far as the boost drop off Tom thinks maybe the wires are too tight and they are being pulled and the tmap is being pulled out creating a leak?
Still waiting for my local dealer to call back.
Last edited by bigjacksauto; 07-02-2012 at 09:36 AM.
07-02-2012, 11:36 AM
#33
Senior Member
Join Date: 11-05-2010
Location: Detroit, Michigan USA
Posts: 1,492
I talked to the service writer and he said the tech said everything went very smoothly.
I asked him how the power difference was and he said he felt that I should be the first to try it.
It was a long day for me so I only got a chance to try a half throttle 10-40 mph pull.
the boost went up and was there almost immediatly.
Then from a 5 mph roll I tried another 1/2 - 3/4 throttlle start the car pulled way harder than ever before and it literally felt like it was clawing at the road spinning both tires but biting at the same time.
I was a bit skeptical up until then when I said "wow I guess it really does make way more power"
It was about 90 today with a ton of humidity drove it for about a half an hour ran into the bank and had to leave the a/c on for the family came out engine was around 215
which I have seen before but after a couple minute drive to the next stop.The fan kept running after I shut the car off.never had that happen before but then again never left it run at idle in this crazy heat and humidity we have.
after about I think two minutes I started it up for a few seconds to circulate the coolant shut it off and the fan went off.
After reading everything here this appears to be normal???????????
I am amazed at just with say a 1/8th throttle the boost starts to come up now.
I would Highly suggest anyone who is looking to have the GMTU installed in the Central NY area go to Burdick Chevrolet in Cicero NY.They where great to deal with and listened to every thing I had to say and answered all questions.
I asked him how the power difference was and he said he felt that I should be the first to try it.
It was a long day for me so I only got a chance to try a half throttle 10-40 mph pull.
the boost went up and was there almost immediatly.
Then from a 5 mph roll I tried another 1/2 - 3/4 throttlle start the car pulled way harder than ever before and it literally felt like it was clawing at the road spinning both tires but biting at the same time.
I was a bit skeptical up until then when I said "wow I guess it really does make way more power"
It was about 90 today with a ton of humidity drove it for about a half an hour ran into the bank and had to leave the a/c on for the family came out engine was around 215
which I have seen before but after a couple minute drive to the next stop.The fan kept running after I shut the car off.never had that happen before but then again never left it run at idle in this crazy heat and humidity we have.
after about I think two minutes I started it up for a few seconds to circulate the coolant shut it off and the fan went off.
After reading everything here this appears to be normal???????????
I am amazed at just with say a 1/8th throttle the boost starts to come up now.
I would Highly suggest anyone who is looking to have the GMTU installed in the Central NY area go to Burdick Chevrolet in Cicero NY.They where great to deal with and listened to every thing I had to say and answered all questions.
Last edited by ChevroletCustomerService; 07-02-2012 at 11:36 AM. Reason: Duplicate signature
07-02-2012, 12:36 PM
#34
Senior Member
Thread Starter
Join Date: 10-19-2011
Location: N.Y.
Posts: 1,553
Thanks Michelle
Unfortunately I have almost no brakes in the morning and it looks like the lower tmap sensor is angled probably causing a boost leak.
Called my dealer and was surprised they would not look at it until Friday even though I have a safety issue with the brakes.
My service writer is on a well deserved vacation I am sure he would have gotten me in.
Hopefully this can be resolved soon.
Have a great 4th.
Unfortunately I have almost no brakes in the morning and it looks like the lower tmap sensor is angled probably causing a boost leak.
Called my dealer and was surprised they would not look at it until Friday even though I have a safety issue with the brakes.
My service writer is on a well deserved vacation I am sure he would have gotten me in.
Hopefully this can be resolved soon.
Have a great 4th.
07-02-2012, 02:52 PM
#36
Platinum Member
Join Date: 12-06-2009
Location: Alabama
Posts: 11,111
Thanks Michelle
Unfortunately I have almost no brakes in the morning and it looks like the lower tmap sensor is angled probably causing a boost leak.
Called my dealer and was surprised they would not look at it until Friday even though I have a safety issue with the brakes.
My service writer is on a well deserved vacation I am sure he would have gotten me in.
Hopefully this can be resolved soon.
Have a great 4th.
Unfortunately I have almost no brakes in the morning and it looks like the lower tmap sensor is angled probably causing a boost leak.
Called my dealer and was surprised they would not look at it until Friday even though I have a safety issue with the brakes.
My service writer is on a well deserved vacation I am sure he would have gotten me in.
Hopefully this can be resolved soon.
Have a great 4th.
If it's a case of tech error, I doubt he will admit it.
07-04-2012, 06:29 PM
#37
Senior Member
Thread Starter
Join Date: 10-19-2011
Location: N.Y.
Posts: 1,553
Well I got in earlier once the higher ups realized it was a brake issue.
They said it was the correct reflash according to gm But they reflashed just in case.
Yes the tech did not grind the nub off prt directions first time.
This time they did.
I just drove it home easy did Noyes want to worry about it during the 4th.
The tmap looks like it seats much better now.
I will find out tomorrow if it pops out and I will also find out if it has brakes in the morning.
If not they said bring it back and leave it over night.
Shouldn't they be able to check the vacuum pump when it is running?
Also the new tmap sensors only use one mounting screw on tje lower one they left the second screw out
anyone know if that is a blind screw hole or is it wide open to the intake pipe?
They said it was the correct reflash according to gm But they reflashed just in case.
Yes the tech did not grind the nub off prt directions first time.
This time they did.
I just drove it home easy did Noyes want to worry about it during the 4th.
The tmap looks like it seats much better now.
I will find out tomorrow if it pops out and I will also find out if it has brakes in the morning.
If not they said bring it back and leave it over night.
Shouldn't they be able to check the vacuum pump when it is running?
Also the new tmap sensors only use one mounting screw on tje lower one they left the second screw out
anyone know if that is a blind screw hole or is it wide open to the intake pipe?
Thread
Thread Starter
Forum
Replies
Last Post
Shaggyofwv
2.0L Performance Tech
16
01-18-2013 10:18 PM
foxtrotraptor
2.0L Performance Tech
10
10-26-2011 12:52 PM