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Old 07-21-2021, 11:03 AM   #2
hatzie's Avatar
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,663
Re: need to stop a truck from cranking

Pull the starter relay?
If he had any mechanical/electrical knowhow when he still had all his faculties you may have to remove the battery or just store the truck elsewhere.

I had a grandfather with Alzheimers back in the 90's. It's a rough ride especially if you had a decent relationship with them. They're dying in fits and starts. It tears your heart out.
A year into his decline gramps thought I was his brother Charles who died a decade before I was born. That was a blessing when I had to retrieve him from the area he lived in in the late 1930's. He got lost looking for the campground and travel trailer he and my grandmother lived in before they could afford a house.
My grandmother made me take the car away after that incident.
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8

RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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