Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1985ASTRO VAN M L4-151 2.5LREPAIR AND DIAGNOSISSTARTING AND CHARGINGTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSSTARTING - NO CRANK CLUTCH OPERATED NEUTRAL START SWITCH
1985 Chevrolet Astro Van M L4-151 2.5L
Starting - No Crank Clutch Operated Neutral Start Switch
1985 Chevrolet Astro Van M L4-151 2.5LSECTION Starting - No Crank Clutch Operated Neutral Start Switch
85-145
7C
NOV., 1985
Subject: CLUTCH OPERATED NEUTRAL START SWITCH
Model and Year: 1985 ASTRO VAN WITH MANUAL TRANSMISSION
TO: ALL CHEVROLET DEALERS
The neutral start switch is a starter safety device designed to keep the starter motor from operating if the clutch pedal is not pushed down all the way to the floor. Some 1985 Astro Vans will not start, however, even though the clutch pedal is fully depressed. Upon inspection, these vehicles will typically have neutral start switches with burnt contacts. Also, due to the geometry of the clutch pedal travel, the switch is not always activated, resulting in a "NO START" condition.
Starting with July, 1985 built trucks, a new clutch operated neutral start switch, P/N 15599072, will be installed. This switch will mount exactly as the existing switch.
Service Procedure
1. Follow the neutral safety switch removal procedure as outlined in Section 7C of the 1985 Astro Service Manual.
2. Install the neutral safety switch, P/N 15599072, as specified in Section 7C, following the adjustment procedure below.
Adjustment Procedure
a. The forward or leading edge of slider (A) should be approximately 27.0 mm (1.06 in.) from the end of shaft (B) prior to installation of the switch. This measurement includes the thickness of the slider as shown in Figure No. 1.
b. Care must be taken that the clutch pedal is not moved in such a manner that the slider is moved until all mats and/or carpets are installed in the vehicle.
c. When all mats and/or carpets are in place, the clutch pedal should be depressed to the floor mat and/or carpet. A "clicking" noise will be heard as the automatic adjusting mechanism sets itself.
d. Failure to observe these procedure will result in a truck needing excessive clutch pedal travel to actuate the neutral start switch; or in some cases, a "no start" condition.
7C
NOV., 1985
Subject: CLUTCH OPERATED NEUTRAL START SWITCH
Model and Year: 1985 ASTRO VAN WITH MANUAL TRANSMISSION
TO: ALL CHEVROLET DEALERS
The neutral start switch is a starter safety device designed to keep the starter motor from operating if the clutch pedal is not pushed down all the way to the floor. Some 1985 Astro Vans will not start, however, even though the clutch pedal is fully depressed. Upon inspection, these vehicles will typically have neutral start switches with burnt contacts. Also, due to the geometry of the clutch pedal travel, the switch is not always activated, resulting in a "NO START" condition.
Starting with July, 1985 built trucks, a new clutch operated neutral start switch, P/N 15599072, will be installed. This switch will mount exactly as the existing switch.
Service Procedure
1. Follow the neutral safety switch removal procedure as outlined in Section 7C of the 1985 Astro Service Manual.
2. Install the neutral safety switch, P/N 15599072, as specified in Section 7C, following the adjustment procedure below.
Figure No. 1:
Adjustment Procedure
a. The forward or leading edge of slider (A) should be approximately 27.0 mm (1.06 in.) from the end of shaft (B) prior to installation of the switch. This measurement includes the thickness of the slider as shown in Figure No. 1.
b. Care must be taken that the clutch pedal is not moved in such a manner that the slider is moved until all mats and/or carpets are installed in the vehicle.
c. When all mats and/or carpets are in place, the clutch pedal should be depressed to the floor mat and/or carpet. A "clicking" noise will be heard as the automatic adjusting mechanism sets itself.
d. Failure to observe these procedure will result in a truck needing excessive clutch pedal travel to actuate the neutral start switch; or in some cases, a "no start" condition.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.