Heat gauge rising

2007 GMC VAN
97,000 MILES • 2.2L • 4 CYL • 2WD • MANUAL
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RIAZ2782010
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  • 1 POST
Hi this is Riaz from South Africa I have a 2007 GWM 2.2 lux single cab. the heat gauge raises to H when I am driving. When I put the vehicle in to neutral and the vehicle is costing the heat gauge drops as soon as t put it back into gear the gauge raises. However, the vehicle does not boil I have driven for hundreds of KM like that.
I have changed the heat gauge switch still no luck. what could be the issue?
Feb 11, 2018 at 10:29 PM
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PATENTED_REPAIR_PRO
  • CERTIFIED EXPERT
  • 1,853 POSTS
If this has an electric cooling fan make sure it is coming on when the engine gets hot, if not, check the cooling fans fuses and relays.
If the fan is coming on or if this has a mechanical fan, try a new thermostat.
Feb 12, 2018 at 6:58 AM