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2007 Chevy Suburban P2135 Code Causes Engine Not to Start? Battery Replacement & Troubleshooting Guide

Model: 2007 Chevy Suburban Fault Code: P2135 Posted: 2016-10-28 12:58

I'm experiencing two issues with my 2007 Chevrolet Suburban. First, the battery failed and I recently replaced it. Second, yesterday my wife noticed the P2135 diagnostic trouble code for the first time. After pulling over and turning off the car, the vehicle would not start at all—no sound, no spark, nothing when turning the key. It started intermittently after several attempts. Today, after replacing the battery, I get no response at all when trying to start the engine. My main question is: Does the P2135 code actually prevent the engine from starting? I have the following codes: P2135 (repeated), and P2176. The battery was dead about two months ago, charged for a month, then the same issue occurred. The battery was 4-1/2 years old and needed replacement. I do not currently own a diagnostic scanner to read live data or clear codes. I recently received a part (throttle position sensor) that is easy to replace. There are no aftermarket electronic devices installed in the vehicle. I'm trying to fix this myself, but I want to confirm whether P2135 directly causes a no-start condition and what my next steps should be.

Related fault codes
P2135
Comments (10)
Anonymous 2016-10-28 13:19

The P2135 code can indeed prevent the engine from starting under certain conditions. The Powertrain Control Module (PCM) may command the engine to shut off when specific thresholds are met. To understand what's actually happening, you need a diagnostic scanner to read live data and check for underlying issues. Please confirm: Do you have any other codes? Are there any aftermarket devices or modifications? A quick test: Replace the battery, clear all codes using a scan tool, then attempt to start the vehicle. If no response occurs, it may point to a wiring issue or poor battery connection—especially since this started after replacing the battery. Note: There are known Technical Service Bulletins (TSBs) related to P2135 in 2007 Chevy Suburbans. Check your owner’s manual or dealership for updates.

Anonymous 2016-10-28 13:30

About two months ago, the battery died. I charged it and it worked fine for a month before the same issue returned. The original battery was over four years old—definitely needed replacement. I currently have P2135 (repeated) and P2176 codes. I don’t have access to a scanner, so I’m unsure if the P2135 code directly prevents starting. My understanding is that it might, but I want confirmation before proceeding with repairs. The part for the throttle position sensor was ordered yesterday and should arrive soon. It’s straightforward to replace. No aftermarket devices are installed. I appreciate your clarification on the questions—thank you!

Anonymous 2016-10-28 13:54

Yes, under certain conditions, the P2135 code can prevent engine operation. However, the exact triggering conditions aren’t clearly defined in standard troubleshooting trees. That’s why I quoted it—this is a known behavior but not always straightforward. Could you confirm which part was ordered and why? The throttle position sensor (TPS) is related to P2135, as it monitors throttle position correlation between sensors 1 and 2 located in the throttle body assembly.

Anonymous 2016-10-28 14:11

The accelerator pedal has a sensor that the codes indicate is faulty. I tried jump-starting the vehicle—no response at all. The engine does not turn over, and there’s no sound or movement when turning the key.

Anonymous 2016-10-28 14:42

Are you attempting this repair yourself? Without a scanner, diagnosing issues can become expensive quickly. There are currently no codes indicating a failed component. The P2135 code specifically relates to throttle position sensor (TPS) correlation between TPS sensors 1 and 2 in the throttle body assembly. A quick fix: Replace the battery, clear all codes, then try starting. This may reset internal systems—though data will be lost temporarily (like radio and interior lights turning off). The lights return when the key is removed, which suggests a power-related issue.

Anonymous 2016-10-28 15:37

Yes, I'm working on this myself. What does P2137 mean? Are there any recommendations for my next step? After replacing the battery and restarting, all internal devices (radio, lights) turned off completely—only came back when the key was removed. This behavior is concerning.

Anonymous 2016-10-28 16:34

You’ve replaced the battery and cleared the codes. When you attempt to start the vehicle: What happens? Are there any diagnostic codes present now? Is the security light illuminated (usually a red or amber indicator on the dashboard)? Note: P2137 is not listed in your original codes—could this be a misread or a new code that appeared after the battery replacement? Please confirm.

Anonymous 2016-10-28 16:48

When I turn the key, nothing happens—the engine does not respond. All interior lights and the radio go dark. I don’t have a scanner to check for codes. I’m not sure what the security light is or where it’s located. Yes—P2137 is another code that appeared recently.

Anonymous 2016-10-29 10:27

This issue may require professional diagnosis—a dedicated diagnostic scanner is essential, not just a basic code reader. Regarding the starting problem: Focus on battery installation first. Check for loose or corroded terminals and ensure proper grounding. Since the issue appeared after replacing the battery, it’s possible that the new battery wasn’t properly connected or installed with full contact. Was the new battery fully charged before installation? Ensure all connections are tight and secure.

Anonymous 2016-10-31 17:40

Yes—the battery is brand-new and confirmed to be fully charged. I’ve already taken the vehicle to a dealership for further inspection.