Shift to park message

[danzig997]

If you're concerned about ordering a single $5 part from them--consider looking at their range of tools--wire strippers/soldering irons/magnifiers/pliers/crimpers/connectors--there's bound to be something that will either aid in the switch replacement or some future project...🤓

The easiest way is to install Bypass Harness GM Original Part 84733196

84733196 - Harness - General Motors for sale online | eBay

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Service Bulletin

https://static.nhtsa.gov/odi/tsbs/2020/MC-10186071-9999.pdf

 

[Anaduff]

That's the easy way? 😱

 

[danzig997]

That's the easy way? 😱

Instead of resoldering a new microswitch...

 

[DrFaustus]

Well, it does eliminate the switch. So it's a more permanent fix.

 

[Anaduff]

Let's see...

...TSB 19-NA-206 Harness from Ebay $14.19, same from GM Parts Direct $9.02. Even after I cut-off the new switch from the harness to replace the bad switch with-out having to deal with the harness removal/replacement, I'd rather pop $3.81* for the OEM switch.

*because I already have the other stuff:

 

[saab93driver]

You can buy a single switch from Digi-key. Says it’s Omron branded part.

For the just over $10 delivered I thought it was worth a shot to keep one around. The Digi-key part is indeed Omron branded, it is molded into the body of the switch just like like photos of the GM supplied switch. Seeing the dimunutive size in person now I know why it is called a microswitch. The switch looks identical in all respects to the GM/Japan made one with exception the terminals are silver colored not gold colored. The printed label shows Omron Electronics Inc. EMC as the supplier but country of origin is China, in case anyone is interested to know.

I've learned more about these switches than I really wanted to know. The part numbers break it down.
There is the hinged lever type like shown in the GM part photo Omron D2HW-BL221H - the lever pivots on a hinge pin.

And there is the leafspring lever one like some of the ones offered from China - Ormon designation D2HW-BL251H - the leaf spring leaver is just that, it flexes at the base where it attaches to the body like a leaf spring, no hinge pin.

 

[danzig997]

Maybe the GM part made in Japan is a revised part.

 

[saab93driver]

Maybe the GM part made in Japan is a revised part.

Possibly. Whoever is running the eBay ad for a Japan made switch shows a photo with a 9/13/2013 date on an Omron box. it, could have shifted production site since then or the picture is from a different source than what they have in hand Omron # is the same as they show at least on that photo.

GM Chevy Chevrolet Buick Gear Shift to Park Transmission Error Fix Repair switch | eBay

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[danzig997]

Maybe the original Opels switch was made in China to save a few cents.

Japanese switch
Mechanical Life: 1,000,000 Cycles
Electrical Life: 100,000 Cycles

Product Information
Operating Force:
50gf
HTSUS:
8536.50.7000
RoHS Status:
RoHS Compliant
Electrical Life:
100,000 Cycles
Termination Style:
Solder Lug
Voltage Rating - DC:
12 V
Operating Temperature:
-40°C ~ 85°C
Mechanical Life:
1,000,000 Cycles
Differential Travel:
0.031" (0.8mm)
Voltage Rating - AC:
125 V
Overtravel:
0.098" (2.5mm)
Pretravel: -
Package: Bulk
Switch Function: On-Mom
Operating Position: 0.366" (9.3mm)
Moisture Sensitivity Level (MSL):
Not Applicable Circuit: SPDT
standard
100mA (AC), 2A (DC)
Ingress Protection:
IP67 - Dust Tight, Waterproof
Features:
Support Posts
Mounting Type:
Chassis Mount
Series:
D2HW
Actuator Type:
Lever, Straight
Release Force:
3.059gf
Base Product Number:
D2HW
ECCN:
EAR99

 

[saab93driver]

Maybe the original Opels switch was made in China to save a few cents.

Japanese switch
Mechanical Life: 1,000,000 Cycles
Electrical Life: 100,000 Cycles

Product Information
Operating Force:
50gf
HTSUS:
8536.50.7000
RoHS Status:
RoHS Compliant
Electrical Life:
100,000 Cycles
Termination Style:
Solder Lug
Voltage Rating - DC:
12 V
Operating Temperature:
-40°C ~ 85°C
Mechanical Life:
1,000,000 Cycles
Differential Travel:
0.031" (0.8mm)
Voltage Rating - AC:
125 V
Overtravel:
0.098" (2.5mm)
Pretravel: -
Package: Bulk
Switch Function: On-Mom
Operating Position: 0.366" (9.3mm)
Moisture Sensitivity Level (MSL):
Not Applicable Circuit: SPDT
standard
100mA (AC), 2A (DC)
Ingress Protection:
IP67 - Dust Tight, Waterproof
Features:
Support Posts
Mounting Type:
Chassis Mount
Series:
D2HW
Actuator Type:
Lever, Straight
Release Force:
3.059gf
Base Product Number:
D2HW
ECCN:
EAR99

I would personally take a Jap produced switch over China one on principal but in research I’ve done it seems the Japanese switch might be misrepresented by the eBay sellers or at least old stock and harder to find. I’ve seen that with other items. OTOH Omron is a global company so they wouldn’t be the first to switch production to another Asian location for existing part.

 

[danzig997]

Buick's/Opel's OEM switch definitely is not lasting:
Mechanical Life: 1,000,000 Cycles
Electrical Life: 100,000 Cycles

 

[Anaduff]

If 1 trip = 2 cycles (starting in park/ending in park) that's 50,000 trips. At 4 trips per day--every day of the week, it should fail in about 34 years (and fall apart 308 years later). I know of other ways to sense the position of a 'something' (LED & detector/magnet & reed switch/variable resistor/etc.) but a simple switch is the most cost effective, and it's not like the other methods aren't without their problems .

Of course they *could* have used a manual transmission 🤣 but then those use a micro-switch for the reversing lamps...

 

[bollox74]

even my 2001 BMW has a micro-switch on the brake light that will immobilize the car if it goes wonky.

Nothing will last forever

 

[G-348168]

This morning I got the "shift to park" message on the DIC even though I was already in park. I tried putting in gear and back in park but got the message again. Turned off car and restarted and message went away. I think this has happened once before as well.

Temporary glitch? Concern? Anyone else ever have this happen?

2018 Sport back Essence red needle.

So we have a 2018 Sportback and it gives us the same message every once in a while. So keep the car running or turn it back on. The safety lever on the shifter click it several times (10 or more) while pressing the brake and it'll override the electric switch and place the transmission in park. Hope it helps.

 

[danzig997]

A complete assembly for sale on eBay. #20 on the picture below:

GM OEM CONTROL 85123748 | eBay

Find many great new & used options and get the best deals for GM OEM CONTROL 85123748 at the best online prices at eBay! Free shipping for many products!

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[RegalMN]

So we have a 2018 Sportback and it gives us the same message every once in a while. So keep the car running or turn it back on. The safety lever on the shifter click it several times (10 or more) while pressing the brake and it'll override the electric switch and place the transmission in park. Hope it helps.

I ended up getting mine fixed at the dealer. Thanks though!

 

[G-606909]

Just an update on the jumper harness I installed. Still no issues. Seems to be the fix for the Shift to Park message.

Do you have a Buick encore Gx or a Malibu?

 

[Maypo]

Shift to Park error started up for me a few weeks back. I bought the wiring harness and installed it this evening. First two tries no error message so I'm hoping it is a long term fix.

I installed the wiring harness "fix" at the end of June. Three and a half months later and the Shift to Park issue is back.

 

[danzig997]

I installed the wiring harness "fix" at the end of June. Three and a half months later and the Shift to Park issue is back.

Did you install this "GM Harness 84733196" module? I bought it proactively. My Tourx has less than 17K and the error started once,
It looks like I will need to install a harness and brand-genuine Japanese Omron switch.

 

[danzig997]

Just an update on the jumper harness I installed. Still no issues. Seems to be the fix for the Shift to Park message.

After you installed the harness did you ever get "Shift to Park message"?