Still having problems
Thread Starter
Teching In
Joined: Jan 2017
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Still having problems I want to link a thread here as I now suspect the PCM as the problem!
https://ls1tech.com/forums/automatic...-problems.html
I sure hope somebody can help me as I am out of options.
https://ls1tech.com/forums/automatic...-problems.html
I sure hope somebody can help me as I am out of options.
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
Still haven't got my truck fixed ..... We have gone over and over it, and had a couple pros scan with various scanners and all say they think it is the PCM
We swapped in a LQ9 in my 2000 GMC and replaced the 5.3 and I sent my comp off to be re-flashed while the motor was replaced.
It shifts even if on the floor in the 2000 RPM range and is a total dog even if I jerk it down in low and floor it! (does not shift out then)
No grounds are loose as we triple checked all.
TPS has been replaced and manually voltage tested.
It is popping two codes:
P0122
Throttle/Petal Position sensor A Circuit low input
P1635
5 volt reference (A or 1) Circuit
Then the same code a different way
P0122
1. Throttle Position (TP) sensor 1. Circuit low Voltage 2. Throttle Position (TP) sensor Circuit low
P1635
5 volt reference (A or 1) Circuit
Any idea what could be causing it.
We swapped in a LQ9 in my 2000 GMC and replaced the 5.3 and I sent my comp off to be re-flashed while the motor was replaced.
It shifts even if on the floor in the 2000 RPM range and is a total dog even if I jerk it down in low and floor it! (does not shift out then)
No grounds are loose as we triple checked all.
TPS has been replaced and manually voltage tested.
It is popping two codes:
P0122
Throttle/Petal Position sensor A Circuit low input
P1635
5 volt reference (A or 1) Circuit
Then the same code a different way
P0122
1. Throttle Position (TP) sensor 1. Circuit low Voltage 2. Throttle Position (TP) sensor Circuit low
P1635
5 volt reference (A or 1) Circuit
Any idea what could be causing it.
You probably are in REP and that's why the it feels like a dog ... get that TPS fixed
QUOTE=ACAMS;19678493]Still haven't got my truck fixed ..... We have gone over and over it, and had a couple pros scan with various scanners and all say they think it is the PCM
We swapped in a LQ9 in my 2000 GMC and replaced the 5.3 and I sent my comp off to be re-flashed while the motor was replaced.
It shifts even if on the floor in the 2000 RPM range and is a total dog even if I jerk it down in low and floor it! (does not shift out then)
No grounds are loose as we triple checked all.
TPS has been replaced and manually voltage tested.
It is popping two codes:
P0122
Throttle/Petal Position sensor A Circuit low input
P1635
5 volt reference (A or 1) Circuit
Then the same code a different way
P0122
1. Throttle Position (TP) sensor 1. Circuit low Voltage 2. Throttle Position (TP) sensor Circuit low
P1635
5 volt reference (A or 1) Circuit
Any idea what could be causing it.[/QUOTE]
QUOTE=ACAMS;19678493]Still haven't got my truck fixed ..... We have gone over and over it, and had a couple pros scan with various scanners and all say they think it is the PCM
We swapped in a LQ9 in my 2000 GMC and replaced the 5.3 and I sent my comp off to be re-flashed while the motor was replaced.
It shifts even if on the floor in the 2000 RPM range and is a total dog even if I jerk it down in low and floor it! (does not shift out then)
No grounds are loose as we triple checked all.
TPS has been replaced and manually voltage tested.
It is popping two codes:
P0122
Throttle/Petal Position sensor A Circuit low input
P1635
5 volt reference (A or 1) Circuit
Then the same code a different way
P0122
1. Throttle Position (TP) sensor 1. Circuit low Voltage 2. Throttle Position (TP) sensor Circuit low
P1635
5 volt reference (A or 1) Circuit
Any idea what could be causing it.[/QUOTE]
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
Iran fine before the swap and tune.
It doesn't feel like a dog, it IS a dog, I can outrun it through the quarter on my bicycle and I am nearly 60.
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
I have a guy coming tomorrow that is real good with these trucks and he has a Snap-on scanner ..... don't think they have tried one yet.
All the other scanners are showing my engine to be a 5.3 ..... gonna see what the Snap-on says
All the other scanners are showing my engine to be a 5.3 ..... gonna see what the Snap-on says
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Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
They are working on it now ..... Trying to get the other guy with the Snap-on scanner to come help.
They had a trainee do a lot of my engine swap and as you know it has been a month, I just started getting on them regularly.
I don't mind the trainee learning on my truck and really don't mind waiting a month, but now it is time to get my truck going no matter what it takes.
They had a trainee do a lot of my engine swap and as you know it has been a month, I just started getting on them regularly.
I don't mind the trainee learning on my truck and really don't mind waiting a month, but now it is time to get my truck going no matter what it takes.
They are working on it now ..... Trying to get the other guy with the Snap-on scanner to come help.
They had a trainee do a lot of my engine swap and as you know it has been a month, I just started getting on them regularly.
I don't mind the trainee learning on my truck and really don't mind waiting a month, but now it is time to get my truck going no matter what it takes.
They had a trainee do a lot of my engine swap and as you know it has been a month, I just started getting on them regularly.
I don't mind the trainee learning on my truck and really don't mind waiting a month, but now it is time to get my truck going no matter what it takes.
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
The guy that is good at that came by on his 30 Min lunch break with his snap-on scanner and said the TPS was not getting signal from the computer.
Is there a way to check the computer?
Can we get the PCM out of another truck with same type controls and stick it in just to test ...... I need my truck.
Is there a way to check the computer?
Can we get the PCM out of another truck with same type controls and stick it in just to test ...... I need my truck.
The guy that is good at that came by on his 30 Min lunch break with his snap-on scanner and said the TPS was not getting signal from the computer.
Is there a way to check the computer?
Can we get the PCM out of another truck with same type controls and stick it in just to test ...... I need my truck.
Is there a way to check the computer?
Can we get the PCM out of another truck with same type controls and stick it in just to test ...... I need my truck.
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0
No signal to TPS ...... ran fine until the swap!
I should have KNOWN not to make two changes at the same time .... should have had motor installed and running, THEN sent computer off to be flashed for the 6.0
I should have KNOWN not to make two changes at the same time .... should have had motor installed and running, THEN sent computer off to be flashed for the 6.0
Thread Starter
Teching In
Joined: Jan 2017
Posts: 37
Likes: 0