I'm going for 2 birds with one stone here. My first year 6.5TD factory service manual leaves a lot to be desired. Omits 6.5TD stuff and refers to 6.2. The last 3 days, upon cold start up my truck fails to initialize the cold advance circuit and drops to normal idle immediately. I'm want to replace the cold advance solenoid. One place in the manual it shows the solenoid under the IP cover, another place (fast idle speed adjustment) it shows a solenoid external of the IP but refers to it as fast idle solenoid. Gmpartsdirect shows the part 'cold advance solenoid #15578218' for $50.00.
Also, is the '93 service manual any better than the '92 as far as differentiating the 6.2 from the 6.5TD??