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Solo trip to Rainbow Basin and Inscription Canyon

Portager

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Messages
1,506
Location
Silverado
This was the last weekend of My wife's spring break and she really wanted to get out of the house. She also wanted to show her son Inscription Canyon (one of her favorite trips) and we had never seen Rainbow Basin near Barstow CA. So we headed off on an ill advised solo trip into the desert. First we went to Rainbow Basin which had some pretty cool rock formations.
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Then to go to Inscription Canyon we went almost back into Barstow, so we stopped at the RR Museum in Barstow for my stepson (he said that was the best part).
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Next we went out to Inscription canyon and took in the petroglyphs.
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I have a lot more petroglyphs if anyone is interested.

On the way back we went up a moderately steep and very rocky hill and stopped to photograph the Desert Candle wild flowers. This is the only place I've ever seen Desert Candles.
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When we went to leave, I couldn't get the truck out of park. I assumed it was because I was parked on a slope and I hadn't used the emergency brake, so I got out the high lift jack and jacked the trailer hitch at an angle to push the truck forward, negative. Next, I placed my chocks behind the back wheels to push it forward when I let it down, negative. Then I attached the winch to a uphill rock with a tree saved and tried to winch it up hill but the rock pulled loose. Then I extended my winch to the limit of my line and put my tow strap around the base of a large Creosote bush. I winched it a full truck length up hill sliding all 4 wheels and it still wouldn't come out of park. So, I finally crawled under and disconnected the shift linkage (with the emergency brake set and the wheels chocked) and manually shifted it into reverse. We backed down the hill (without the backup camera). Once again, I set the emergence brake and chocked the wheels and manually shifted into drive. We drove 134 miles home only stopping except at a drive through at In and Out. We were quite glade to make it home. Needless to say we will be taking the H3T back to Tustin Buick & GMC for some service. The shifter seams to be locked, as if I weren't applying the brake. Also, last week I noticed that after backing up if I went straight from reverse to drive the backup camera would stay on.
 

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JGBB04

Well-Known Member
Messages
520
Location
Tampa Bay
If it is the shift lock you can pull up the boot & find the manual release if it happens again. I haven't had it happen in the T yet my Explorer at work does it on occasion
 

SuperBuickGuy

Well-Known Member
Messages
3,403
Location
Woodinville, WA
to get to the release, pull the boot out of the aluminum surround (it's just held with slide-clips, but may require a gentle persuasion by prying between the aluminum and the leather... be gentle). The release is on the right, rear of the shifter - it's a silver, metal button.
 

Portager

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Messages
1,506
Location
Silverado
Thanks for the info on the manual release switch. Hopefully I won't need it, but good to know just in case. It would be easier than my solution of disconnecting the shift linkage and shifting from underneath.

Tustin Hummer left a message that they figured out the problem. They said the "Internal Mode Switch" is broken. They ordered a new one and it will be there tomorrow morning. :huh:
 

Portager

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Messages
1,506
Location
Silverado
Tustin Buick had to order the parts (do they stock any Hummer parts anymone?), so I got the truck back last night (Thursday). There were two separate issues. (1) Not shifting out of Park was due to shift lock solenoid failure part # 88967140, (2) Traction Control Failure was due to transmission internal mode switch part # 8654799. They also charged GM 0.5 hours to R&R the skid plate (which they indicated was after market even though it is the GM OEM skid plate).

I wonder if the manual release button works when the sock solenoid has failed?

All the repairs were covered under warranty I paid zero and the washed all the dirt off. Now I have to go ad get it dirty again. :thumbs:

The truck drove perfectly on the way home and cruise control works once again.
 
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