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"Hard start" problems due to faulty glow plugs and wiring on GMC V2500 Suburban

Problem overview

Faulty glow plugs and incorrect wiring to the glow plugs have been known to cause "hard start" problems.

2 people reported this problem

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GMC V2500 Suburban vehicles with this problem

2 model years affected

1991 GMC R2500 Suburban

1990 GMC R2500 Suburban

1991 GMC R2500 Suburban

1990 GMC R2500 Suburban

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Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal