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 MANUALSCHEVROLET1987SUBURBAN 1/2 TON 2WD V8-379 6.2L DSLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTGLOW PLUG SYSTEMGLOW PLUG CONTROL MODULETECHNICAL SERVICE BULLETINSCUSTOMER INTERESTGLOW PLUG - NO COLD START CAPABILITY
1987 Chevrolet Suburban 1/2 Ton 2WD V8-379 6.2L DSL
Glow Plug - No Cold Start Capability
1987 Chevrolet Suburban 1/2 Ton 2WD V8-379 6.2L DSLSECTION Glow Plug - No Cold Start Capability
9218chevy02
Number: 89-264-6
Section: 6
Date: September 1989
Corporate Bulletin No.: 936519
Subject:
NO COLD START CAPABILITY
Model and Year:
1985-89 C, K, R, V, G, P TRUCKS WITH 6.2L (VIN CODE J AND C) ENGINES
TO: ALL CHEVROLET DEALERS
THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 89-248-6, DATED DECEMBER 1988. DIAGNOSTIC PROCEDURES HAVE BEEN REFERENCED, AS WELL AS A CHANGE MADE IN THE SECOND PARAGRAPH. ALL COPIES OF 89-248-6 SHOULD BE DISCARDED.
Some 1985-89 C, K, R, V, G and P-trucks with a 6.2L diesel engine may experience a "no start" condition when cold.
The electronic glow plug controller, P/N 12052153 (color coded black), may be responsible for a no start condition.
If a no start condition exists, refer to the diagnostic procedure listed in Dealer Service Bulletin # 88-49, dated October 1987. Should a new glow plug controller be required, based on your diagnosis, the following controller should be used.
The new controller, P/N 12088520 (color coded grey), is being released with improved circuit board components to address no start difficulty.
Part is currently available from GMSPO.
Use applicable labor operation number and time.
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.