87 GMC Sierra R3500 7.4L TBI vacuum diagram
Hello
I need your help
I’m looking for the full TBI vacuum diagram for a 1987 GMC Sierra R3500 with 7.4L (454) engine & auto trans. The workshop miss up some vacuum hoses, and I need to put them back correctly
Thanks
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1972 GMC Sierra C2500, V8-350
1986 GMC Sierra C2500, V8-454
1986 GMC Sierra C2500, V8-LS1
1986 GMC Sierra K2500, V8-350
1987 GMC Sierra R3500, V8-454
1997 GMC Sierra K2500, V8-454
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