Remote Start Problem

GWFETTY · December 18, 2007

I HAVE A 2008 GMC DENALI AWD. ON TWO OCCASIONS, I HAVE TRIED TO USE THE REMOTE START AND IT RESULTED IN THE CHECK ENGINE LIGHT COMING ON. ON THE FIRST OCCASION, I USED ONSTAR AND THEY TOLD ME THERE WAS AN EMISSIONS PROBLEM. I TOOK IT TO THE DEALER, THEY CHECKED ALL THE VACCUUM HOSES, AND RESET THE LIGHT. THEY EXPLAINED TO ME THE ISSUE WAS MOST LIKELY CAUSED BY CONDENSATION. IT JUST RECENTLY HAPPENED AGAIN. THE DEALERSHIP TOLD ME THAT WHEN THE REMOTE START IS USED, THE ENGINE FIRES IN A SPECIAL SEQUENCE IN ORDER TO HEAT FASTER. I READ THE OWNERS MANUAL, AND IT CALLS FOR 91 OCTANE, BUT GOES ON TO SAY YOU CAN USE A LOWER GRADE (DOWN TO 87), BUT IT COULD RESULT IN PERFORMANCE LOSS. DUE TO GAS BEING 3.50 A GALLON, I HAVE USED 87 OCTANE DURING THE LAST COUPLE OF FILL UPS. COULD THE LOWER OCTANE GAS BE CAUSING THE ISSUES WITH THE EMISSION OR IS IT SOMETHING BIGGER. THANKS VERY MUCH FOR ANY INSIGHT. I HAVEN'T HAD THE TRUCK A MONTH AND I NEVER USED THE REMOTE START IN BETWEEN THE TIME THE PROBLEM WAS CORRECTED AND NOW.

minibike132 · December 21, 2007

I HAVE A 2008 GMC DENALI AWD. ON TWO OCCASIONS, I HAVE TRIED TO USE THE REMOTE START AND IT RESULTED IN THE CHECK ENGINE LIGHT COMING ON. ON THE FIRST OCCASION, I USED ONSTAR AND THEY TOLD ME THERE WAS AN EMISSIONS PROBLEM. I TOOK IT TO THE DEALER, THEY CHECKED ALL THE VACCUUM HOSES, AND RESET THE LIGHT. THEY EXPLAINED TO ME THE ISSUE WAS MOST LIKELY CAUSED BY CONDENSATION. IT JUST RECENTLY HAPPENED AGAIN. THE DEALERSHIP TOLD ME THAT WHEN THE REMOTE START IS USED, THE ENGINE FIRES IN A SPECIAL SEQUENCE IN ORDER TO HEAT FASTER. I READ THE OWNERS MANUAL, AND IT CALLS FOR 91 OCTANE, BUT GOES ON TO SAY YOU CAN USE A LOWER GRADE (DOWN TO 87), BUT IT COULD RESULT IN PERFORMANCE LOSS. DUE TO GAS BEING 3.50 A GALLON, I HAVE USED 87 OCTANE DURING THE LAST COUPLE OF FILL UPS. COULD THE LOWER OCTANE GAS BE CAUSING THE ISSUES WITH THE EMISSION OR IS IT SOMETHING BIGGER. THANKS VERY MUCH FOR ANY INSIGHT. I HAVEN'T HAD THE TRUCK A MONTH AND I NEVER USED THE REMOTE START IN BETWEEN THE TIME THE PROBLEM WAS CORRECTED AND NOW.

Every reason the Check Engine light comes on for is an Emission problem. We need more to go on...What is the code. In reference to the fuel 87 octane is should not pose a problem.

fossil · December 22, 2007

Your dealer doesnt know what he/she is talking about. The check engine light trips because your remote start is not installed properly. Probable cause is because a wire is not hooked up to where it should be. Have someone who is competent review the installation or go through it yourself with the wiring instructions. Youu can also possibly fry a transmission because of this depending which circuit is involved. Have the installation rechecked against the wiring instructions.