What's the best way to make this go away? If I put in a shift kit, will this make the code go away? If not, will it basically fix the problem so that if I erase the code it won't come back.
Also, if you install a transmission cooler along with the shift kit, will that help insure that the problem doesn't come back?
Thanks for your help guys!!!
P1811
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DRC
- SLE Member

- Posts: 55
- Joined: Sat Sep 01, 2012 10:35 pm
- Year and Trim: 2000 SE
- Location: Winnipeg, Canada
Re: P1811
I put a Transgo shift kit in 3 days ago, I haven't had a rough shift since. Kit + install cost me $200, definitely worth a try before replacing PCS or whatever else may be throwing P1811.
Re: P1811
I would have it diagnosed by a expert. the PCS is a common issue, i wouldnt advise throwing parts at it without having it checked out. most shops will diag for 40-75 bux.
Shane "RedZMonte"
2004 Z16 Z06: Virgin
2000 SSEi: Kenwood DDX512, 3.25" MPS, ZZP DP, PLog, Puck Mount, NGK TR7's, DHP Tuned
1995 Monte Z34: T04e "60" turbo, 42.5# injectors, Borla Catback, OBDII swap, DHP Tuned, Much more...
2004 Z16 Z06: Virgin
2000 SSEi: Kenwood DDX512, 3.25" MPS, ZZP DP, PLog, Puck Mount, NGK TR7's, DHP Tuned
1995 Monte Z34: T04e "60" turbo, 42.5# injectors, Borla Catback, OBDII swap, DHP Tuned, Much more...
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myfirstbonnie
- Resident Gearhead

- Posts: 5530
- Joined: Mon May 19, 2008 10:19 pm
- Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS - Location: Hillsboro, Oregon
Re: P1811
The P1811 code is for the shifts which is 90% of the time due to a PCS issue and gets worse with time and heat. A tranmission oil cooler helps, but many find the best results by putting in the shift kit. It is not a fix, but merely a bandaid for a known issue.
I suggest doing a shift kit with a fluid and filter change and see if it helps, it definately will not hurt and we already know on this forum the sucess of this.
I suggest doing a shift kit with a fluid and filter change and see if it helps, it definately will not hurt and we already know on this forum the sucess of this.



