Pontiac Solstice, Saturn Sky Share Same Fire-Risk Parts With Hummer H3

Bozi Tatarevic
by Bozi Tatarevic
pontiac solstice saturn sky share same fire risk parts with hummer h3

Last week, we learned General Motors was recalling the majority of their Hummer H3 and H3T models due to a fire risk from a melting blower motor resistor and harness. We also learned GM didn’t issue the recall until they were threatened by the National Highway Traffic Safety Administration.

A few days ago, Jalopnik’s Michael Ballaban pointed out the Chevrolet Colorado and GMC Canyon were also at risk due to similar components. These trucks may not be the last of the affected models as the Pontiac Solstice and Saturn Sky also shared many HVAC components with the Hummer H3.

Searching through the NHTSA complaints database and user forums yielded many examples of melted and burnt blower motor resistors and harnesses for the GM roadster twins.

The Solstice and Sky actually have more parts in common with the H3 than even the Colorado and Canyon. While the trucks use a similar resistor with four pins, the Solstice and Sky use the same 5-pin resistor as the H3. Curiously enough, the roadsters and H3/H3T share a host of HVAC components, including the blower motor, blend door actuators and even the heater core.

Searching Solstice and Sky forums also produced case after case of melted harnesses and resistors. Many of the owners were buying the parts and replacing them on their own.

The problem may stem from a harness that is either too short or too loose, causing arcing on the connection and resulting in melted components. The initial part number for the harness is 25797383, but it is no longer available under that number. The initial part was succeeded and released as part number 25867517 — then again as 25949869, the part that is currently available for purchase.

Part numbers can change for many reasons, including vendor changes, but I speculate in this case that GM may have changed the part to try and remedy its issues.

Based on NHTSA records, the earliest complaints for the roadsters started showing up in 2008.

While the number of complaints for the Solstice and Sky is much lower than the H3, lower production numbers must also be taken into account when comparing total complaint counts to the H3. Despite fairly widespread issues with similar parts found on the H3,owners of Kappa-platform cars haven’t reported problems at the same rate.

The H3 recall states dealers should replace the harness and resistor module, both of which are shared parts. The 2006 Chevrolet Equinox and Pontiac Torrent use the same part number for the resistor as the H3, Sky and Solstice. There are cases of multiple failures and, as noted in the complaint below, they also show GM was directly notified of the issue. The Equinox and Torrent moved to a different resistor design after 2006 and the issues seem to have been mitigated after that point.

GM has not issued any recalls or bulletins for these other vehicles, even though complaints and pictures of damage appear to match the H3 issues. The part number changes could be an attempt by GM to remedy the issue before a recall was required, but as we have seen before, GM can take up to a decade to actually acknowledge issues and will keep silent and order parts to try and quietly repair vehicles.

The proof is out there and the right thing for GM to do is recall all of the related models.

[Image Source: hammy221/solsticeforum.com]

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  • Wmba Wmba on Jul 20, 2015

    Yes, car companies spend thousands of hours designing this and that whatnot to eke out another 0.05 mpg. Meanwhile, the trusty, ha, ha, fan motor gets a resistor pack to control speed, wasting energy as heat on all but the high setting. and it's not just GM. everybody's resistor packs go bad, as a Google search will show. Wires too small, resistors too small and get too hot trying to give off heat. Just lousy penny-pinching design, subscribed to by everyone. It's like wiper blades - no advance since 1936, when they took them off the windshield header and put them on the cowl instead. Roof drip channels - worked so well, everyone started leaving them off for looks alone, before aero was a big word. Sometimes, you just gotta shake yer head.

    • Chris724 Chris724 on Jul 20, 2015

      That's what I was thinking too. They still use resistors for fan speed control?

  • KEFarris KEFarris on Jul 23, 2015

    This article may have just answered a big question. I have a 2008 Sky. I have been smelling a melting plastic smell on the driver side starting last summer. I parked the vehicle because I could trace the problem and didn't want to drive it while something was melting. Repair shop couldn't figure it out either.

  • SPPPP Aggression is pretty much the reason that racing exists, so I am going to call this an unsolvable problem. It's a contrived scenario in which you take risks to get rewards. You may be able to improve it ... but never eliminate it.
  • MaintenanceCosts This is now our fourth 20th Anniversary GTI, and the third of those four that had major structural modifications for purely aesthetic reasons. I didn't picture Tim as the type to want to join the STANCE YO crowd, but here we are?
  • JMII This is why I don't watch NASCAR, it just a crash fest. Normally due the nature of open-wheel cars you don't see such risky behavior during Indy car events. You can't trade paint and bump draft with an Indy car. I thought it was a sad ending for a 500. While everyone wants a green flag finish at some point (3 laps? 5 laps?) red flagging it is just tempting people too much like a reset button in a game.The overall problem is the 500 is not a "normal" race. Many one-off competitors enter it and for almost every driver they are willing to throw away the entire season championship just to win the "500". It sure pays way more then winning the championship. This would be like making a regular season NFL game worth more then the Super Bowl. This encourages risky behavior.I am not sure what the fix is, but Indy's restart procedures have been a mess for years. If I was in charge the rule would be pit speed limiter until the green flag drops at a certain place on the track - like NASCARs restart "zone". Currently the leader can pace the field however they wish and accelerate whenever they choose. This leads to multiple false and jumped starts with no penalty for the behavior. Officals rarely wave off such restarts, but that did happened once on Sunday so they tried to make driver behave. The situation almost didn't happen as there were two strategies in the end with some conserving fuel and running old tires, driving slower with others racing ahead. However the last caution put everyone on even terms so nobody had advantage. It always gets crazy in the last few laps but bunching up the field with a yellow or red flag is just asking for trouble.
  • Tim Healey Lol it's simply that VWVortex is fertile ground for interesting used cars!
  • Jalop1991 I say, install gun racks.Let the games begin!